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Review Article | Open Access

Theory analyses and applications of magnetic fluids in sealing

Decai LI,( )Yanwen LI,Zixian LIYuming WANG
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China

† Decai LI and Yanwen LI contributed equally to this work.

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Magnetic fluids are the suspensions composed of magnetic nanoparticles, surfactants, and non-magnetic carrier liquids. Magnetic fluids are widely used in various fields, especially in sealing, because of their excellent features, including rapid magnetic response, flexible flow ability, tunable magneto-viscous effect, and reliable self-repairing capability. Here, we provide an in-depth, comprehensive insight into the theoretical analyses and diverse applications of magnetic fluids in sealing from three categories: static sealing, rotary sealing, and reciprocating sealing. We summarize the magnetic fluid sealing mechanisms and the development of magnetic fluid seals from 1960s to the present, particularly focusing on the recent progress of magnetic fluid seals. Although magnetic fluid sealing technology has been commercialized and industrialized, many difficulties still exist in its applications. At the end of the review, the present challenges and future prospects in the progress of magnetic fluid seals are also outlined.


Sheikholeslami M, Ganji D D. Ferrohydrodynamic and magnetohydrodynamic effects on ferrofluid flow and convective heat transfer. Energy 75: 400–410 (2014)
Rosensweig R E. Magnetic fluids. Annu Rev Fluid Mech 19: 437–463 (1987)
Rinaldi C, Chaves A, Elborai S, He X, Zahn M. Magnetic fluid rheology and flows. Curr Opin Colloid Interface Sci 10(3–4): 141–157 (2005)
Afifah A N, Syahrullail S, Sidik N. Magnetoviscous effect and thermomagnetic convection of magnetic fluid: A review. Renew Sustain Energy Rev 55: 1030–1040 (2016)
Alberto N, Domingues M F, Marques C, André P, Antunes P. Optical fiber magnetic field sensors based on magnetic fluid: A review. Sensors 18(12): 4325 (2018)
Li Y W, Li D C. The dynamics analysis of a magnetic fluid shock absorber with different inner surface materials. J Magn Magn Mater 542: 168473 (2022)
Chen N, Li D C, Xue J Y, Yin Y, Li Y M. Magnetic fluid sealing status estimation based on acoustic emission monitoring. Frontiers in Materials 5: 465 (2022)
Li D C, Li Y W, Li Z P. Combined sealing device with magnetic fluid. U.S. Patent 17 508 166, Oct. 2021.
Kabei N, Sakurai Y, Tsuchiya K. Characteristics of magneto-fluidic control devices which use magnetic fluid as working fluid. In: Fluid Control and Measurement. Harada M, Ed. Oxford (UK): Pergamon Press, 1986: 457–462.
Komaee A. Feedback control for transportation of magnetic fluids with minimal dispersion: A first step toward targeted magnetic drug delivery. IEEE Trans Control Syst Technol 25(1): 129–144 (2017)
Kurian J, Lahiri B B, Mathew M J, Philip J. High magnetic fluid hyperthermia efficiency in copper ferrite nanoparticles prepared by solvothermal and hydrothermal methods. J Magn Magn Mater 538: 168233 (2021)
Chan M H, Hsieh M R, Liu R S, Wei D H, Hsiao M. Magnetically guided theranostics: Optimizing magnetic resonance imaging with sandwich-like kaolinite-based iron/platinum nanoparticles for magnetic fluid hyperthermia and chemotherapy. Chem Mater 32(2): 697–708 (2020)
Urreta H, Aguirre G, Kuzhir P, de Lacalle L N L. Actively lubricated hybrid journal bearings based on magnetic fluids for high-precision spindles of machine tools. J Intell Mater Syst Struct 30(15): 2257–2271 (2019)
Li D C. Theory and Application of Magnetic Fluid Sealing. Beijing (China): Science Press, 2010. (in Chinese)
Papell S S. Low viscosity magnetic fluid obtained by the colloidal suspension of magnetic particles. U.S. Patent 3 215 572, Nov. 1965.
Khalafalla S E, Reimers G W. Magnetofluids and their manufacture. U.S. Patent 3 764 540, Oct. 1973.
Reimers G W, Khalafalla S E. Production of magnetic fluids by peptization techniques. U.S. Patent 3 843 540, Oct. 1974.
Mitu S A, Ahmed K, Bui F M, Nithya P, Al-Zahrani F A, Mollah M A, Rajan M S M. Novel nested anti-resonant fiber based magnetic fluids sensor: Performance and bending effects inspection. J Magn Magn Mater 538: 168230 (2021)
Zhao Y, Wang X X, Lv R Q, Li G L, Zheng H K, Zhou Y F. Highly sensitive reflective fabry–perot magnetic field sensor using magnetic fluid based on vernier effect. IEEE Trans Instrum Meas 70: 7000808 (2021)
Li Y X, Pu S L, Hao Z J, Yan S K, Zhang Y X, Lahoubi M. Vector magnetic field sensor based on U-bent single-mode fiber and magnetic fluid. Opt Express 29(4): 5236–5246 (2021)
Li Y W, Han P D, Li D C, Chen S Y, Wang Y M. Typical dampers and energy harvesters based on characteristics of ferrofluids. Friction 11(2): 165-186 (2023)
Li Y W, Li D C, Li Y S. Performance tests and design of a series of magnetic fluid shock absorbers with varying stiffness based on optimal stiffness formula. Frontiers in Materials 9: 1011550 (2023)
Li D C, Li Y W, Ren S J. Magnetic liquid damping shock absorber. U.S. Patent 17 507 245, Oct. 2021.
Jia J J, Yang G B, Zhang C L, Zhang S M, Zhang Y J, Zhang P Y. Effects of magnetic ionic liquid as a lubricant on the friction and wear behavior of a steel–steel sliding contact under elevated temperatures. Friction 9(1): 61–74 (2021)
Xu M C, Dai Q W, Huang W, Wang X L. Using magnetic fluids to improve the behavior of ball bearings under starved lubrication. Tribol Int 141: 105950 (2020)
Li D C, Li Y W, Chen S Y. Chain unit sealed and lubricated with magnetic fluid and chain having same. U.S. Patent 17 507 520, Oct. 2021.
Ouyang Y B, Qiu R, Xiao Y M, Shi Z Q, Hu S G, Zhang Y, Chen M, Wang P. Magnetic fluid based on mussel inspired chemistry as corrosion-resistant coating of NdFeB magnetic material. Chem Eng J 368: 331–339 (2019)
Sinzato Y Z, Cunha F R. Modeling and experiments of capillary flow of non-symmetric magnetic fluids under uniform field. J Magn Magn Mater 508: 166867 (2020)
Hao R C, Liu H G, Feng Z X. Research on magnetism and magnetization intensity of magnetic fluid. J Phys Conf Ser 1637(1): 012061 (2020)
Andò B, Baglio S, Marletta V, Pistorio A. A magnetic fluid-based inclinometer embedding an optical readout strategy: Modeling and characterization. IEEE Trans Instrum Meas 69(8): 5922–5929 (2020)
Pilati V, Gomide G, Gomes R C, Goya G F, Depeyrot J. Colloidal stability and concentration effects on nanoparticle heat delivery for magnetic fluid hyperthermia. Langmuir 37(3): 1129–1140 (2021)
Parmar S, Ramani V, Upadhyay R V, Parekh K. Two stage magnetic fluid vacuum seal for variable radial clearance. Vacuum 172: 109087 (2020)
Vasilescu C, Latikka M, Knudsen K D, Garamus V M, Socoliuc V, Turcu R, Tombácz E, Susan-Resiga D, Ras R H A, Vékás L. High concentration aqueous magnetic fluids: Structure, colloidal stability, magnetic and flow properties. Soft Matter 14(32): 6648–6666 (2018)
Mizuta Y. Dynamic analysis on magnetic fluid interface validated by physical laws. J Magn Magn Mater 431: 209–213 (2017)
Bateer B, Qu Y, Meng X Y, Tian C G, Du S C, Wang R H, Pan K, Fu H G. Preparation and magnetic performance of the magnetic fluid stabilized by bi-surfactant. J Magn Magn Mater 332: 151–156 (2013)
Odenbach S. Recent progress in magnetic fluid research. J Phys Condens Matter 16(32): R1135–R1150 (2004)
Torres-Díaz I, Rinaldi C. Recent progress in ferrofluids research: Novel applications of magnetically controllable and tunable fluids. Soft Matter 10(43): 8584–8602 (2014)
Li D C, Hao D H. Major problems and solutions in applications of magnetic fluid rotation seal. Chin J Vac Sci Technol 38(7): 564–574 (2018) (in Chinese)
Zhang X, Sun L, Yu Y, Zhao Y. Flexible ferrofluids: Design and applications. Adv Mater 31(51): 1903497 (2019)
Kole M, Khandekar S. Engineering applications of ferrofluids: A review. J Magn Magn Mater 537: 168222 (2021)
Li Z X. Magnetic fluid seals for DWDM filter manufacturing. J Magn Magn Mater 252: 327–329 (2002)
Basak M, Rahman M L, Ahmed M F, Biswas B, Sharmin N. Calcination effect on structural, morphological and magnetic properties of nano-sized CoFe2O4 developed by a simple co-precipitation technique. Mater Chem Phys 264: 124442 (2021)
Eskandari M J, Hasanzadeh I. Size-controlled synthesis of Fe3O4 magnetic nanoparticles via an alternating magnetic field and ultrasonic-assisted chemical co-precipitation. Mater Sci Eng B 266: 115050 (2021)
Sharifi I, Zamanian A, Behnamghader A. Synthesis and characterization of Fe0.6Zn0.4Fe2O4 ferrite magnetic nanoclusters using simple thermal decomposition method. J Magn Magn Mater 412: 107–113 (2016)
Hwang J, Choi M, Shin H S, Ju B K, Chun M. Structural and magnetic properties of NiZn ferrite nanoparticles synthesized by a thermal decomposition method. Appl Sci 10(18): 6279 (2020)
Kimoto K, Kamiya Y, Nonoyama M, Uyeda R. An electron microscope study on fine metal particles prepared by evaporation in argon gas at low pressure. Jpn J Appl Phys 2(11): 702–713 (1963)
Nakatani I, Furubayashi T. Iron-nitride magnetic fluids prepared by plasma CVD technique and their magnetic properties. J Magn Magn Mater 85(1–3): 11–13 (1990)
Pei L, Xuan S H, Pang H M, Gong X L. Influence of interparticle friction on the magneto-rheological effect for magnetic fluid: A simulation investigation. Smart Mater Struct 29(11): 115002 (2020)
He Q, Huang W F, Yin Y, Hu Y, Li Y W, Li D C. An improved lattice Boltzmann model for fluid–fluid–solid flows with high viscosity ratio. Phys. Fluids 34(9): 093322 (2022)
Skumiel A, Kopcansky P, Timko M, Molcan M, Paulovicova K, Wojciechowski R. The influence of a rotating magnetic field on the thermal effect in magnetic fluid. Int J Therm Sci 171: 107258 (2022)
Kumar Mohapatra D, Zubarev A, Safronov A, Philip J. Reconfiguring nanostructures in magnetic fluids using pH and magnetic stimulus for tuning optical properties. J Magn Magn Mater 539: 168351 (2021)
Sharova O A, Merkulov D I, Pelevina D A, Vinogradova A S, Naletova V A. Motion of a spherical magnetizable body along a layer of magnetic fluid in a uniform magnetic field. Phys Fluids 33(8): 087107 (2021)
Borin D, Müller R, Odenbach S. Magnetoviscosity of a magnetic fluid based on Barium hexaferrite nanoplates. Materials 14(8): 1870 (2021)
Lebedev A V. Stabilization of magnetic fluid with polydimethylsiloxane kills three birds with one stone. Soft Mater (2021).
Szczęch M. Theoretical analysis and experimental studies on torque friction in magnetic fluid seals. Proc Inst Mech Eng Part J J Eng Tribol 234(2): 274–281 (2020)
Szydło Z, Szczech M. Investigation of dynamic magnetic fluid seal wear process in utility water environment. Key Eng Mater 490: 143–155 (2011)
Pugachev A O, Ravikovich Y A, Savin L A. Flow structure in a short chamber of a labyrinth seal with a backward-facing step. Comput Fluids 114: 39–47 (2015)
Sun J J, Ma C B, Yu Q P, Lu J H, Zhou M, Zhou P Y. Numerical analysis on a new pump-out hydrodynamic mechanical seal. Tribol Int 106: 62–70 (2017)
Ha Y, Ha T, Byun J, Lee Y. Leakage effects due to bristle deflection and wear in hybrid brush seal of high-pressure steam turbine. Tribol Int 150: 106325 (2020)
Nayebi R, Shemirani F. Ferrofluids-based microextraction systems to process organic and inorganic targets: The state-of-the-art advances and applications. Trac Trends Anal Chem 138: 116232 (2021)
Zhang Y J, Chen Y B, Li D C, Yang Z M, Yang Y L. Experimental validation and numerical simulation of static pressure in multi-stage ferrofluid seals. IEEE Trans Magn 55(3): 4600308 (2019)
Neuringer J L, Rosensweig R E. Ferrohydrodynamics. Phys. Fluids 7: 1927 (1964)
Cowley M D, Rosensweig R E. The interfacial stability of a ferromagnetic fluid. J Fluid Mech 30(4): 671–688 (1967)
Han S N, Li J, Gao R L, Zhang T Z, Wen B C. Study of magnetisation behaviours for binary ionic ferrofluids. J Exp Nanosci 4(1): 9–19 (2009)
Zhang H, Wang S. Near magnetic field assessment and reduction for magnetic inductors with magnetic moment analysis. IEEE Trans Power Electron 37(2): 1641–1652 (2022)
Jia X Y, Lin M, Su S W, Wang Q W, Yang J. Numerical study on temperature rise and mechanical properties of winding in oil-immersed transformer. Energy 239: 121788 (2022)
Ghorbani S, Moghadam A J, Emamian A, Ellahi R, Sait S M. Numerical simulation of the electroosmotic flow of the Carreau–Yasuda model in the rectangular microchannel. Int J Numer Methods Heat Fluid Flow 32(7): 2240–2259 (2022)
Kanno T, Kouda Y, Takeishi Y, Minagawa T, Yamamoto Y. Preparation of magnetic fluid having active-gas resistance and ultra-low vapor pressure for magnetic fluid vacuum seals. Tribol Int 30(9): 701–705 (1997)
Wang H J, Li D C, Zhen S B, He X Z, Wang S Q. Comparative study of the failure pressure between sealing liquids and gas with magnetic fluid. Food&Mach 32(11): 68–70, 101 (2016) (in Chinese)
Zhang W F, Wu K X, Gu C J, Tian H Y, Zhang X B, Li C. Swirl brakes optimization for rotordynamic performance improvement of labyrinth seals using computational fluid dynamics method. Tribol Int 159: 106990 (2021)
Hur M S, Moon S W, Kim T S. A study on the leakage characteristics of a stepped labyrinth seal with a ribbed casing. Energies 14(13): 3719 (2021)
Zhou W J, Zhao Z B, Wang Y F, Shi J L, Gan B, Li B, Qiu N. Research on leakage performance and dynamic characteristics of a novel labyrinth seal with staggered helical teeth structure. Alex Eng J 60(3): 3177–3187 (2021)
Chen T Y, Ji J H, Fu Y H, Yang X P, Fu H, Fang L N. Tribological performance of UV picosecond laser multi-scale composite textures for C/SiC mechanical seals: Theoretical analysis and experimental verification. Ceram Int 47(16): 23162–23180 (2021)
Jin J, Peng X D, Meng X K, Zhao W J, Jiang J B. Analysis of stability of two-phase flow mechanical seal with spiral groove under high speeds. J Braz Soc Mech Sci Eng 43(5): 260 (2021)
Su W T, Li Y, Wang Y H, Zhang Y N, Li X B, Ma Y. Influence of structural parameters on wavy-tilt-dam hydrodynamic mechanical seal performance in reactor coolant pump. Renew Energ 166: 210–221 (2020)
Hildebrandt M, Schwitzke C, Bauer H J. Analysis of heat flux distribution during brush seal rubbing using CFD with porous media approach. Energies 14(7): 1888 (2021)
Fan J J, Ji H H, Wang Q, Hu Y P, Kong X Y. A combined theoretical and experimental study of wear model of brush seal. Tribol Int 154: 106696 (2021)
Kang Y C, Liu M H, Kao-Walter S, Reheman W, Liu J B. Predicting aerodynamic resistance of brush seals using computational fluid dynamics and a 2-D tube banks model. Tribol Int 126: 9–15 (2018)
Fricker P, Baumann M, Bauer F. How different lubricants affect the wear of steel counterfaces in radial lip sealing systems. Wear 477: 203897 (2021)
Grün J, Feldmeth S, Bauer F. Wear on radial lip seals: A numerical study of the influence on the sealing mechanism. Wear 476: 203674 (2021)
Borras F X, de Rooij M B, Schipper D J. Misalignment-induced macro-elastohydrodynamic lubrication in rotary lip seals. Tribol Int 151: 106479 (2020)
Xing F F, Hao R C, Ji J. Experimental research on ferrofluid combined rotary sealing of high power motor. J Phys Conf Ser 1861(1): 012089 (2021)
Yang X L, Sun P, Chen F, Hao F X, Li D C, Thomas P J. Numerical and experimental studies of a novel converging stepped ferrofluid seal. IEEE Trans Magn 55(3): 4600406 (2019)
Wang G H, Yang X L, Zhang R B. Study on axial parameters of stepped ferrofluid seals. In: Proceedings of the 5th International Conference on Mechanical Engineering and Automation Science, Wuhan, China, 2019: 012044.
Bouzid A H. A study on liquid leak rates in packing seals. Appl Sci 11(4): 1936 (2021)
Lee J J, Kang S Y, Kim T S, Byun S S. Thermo-economic analysis on the impact of improving inter-stage packing seals in a 500 MW class supercritical steam turbine power plant. Appl Therm Eng 121: 974–983 (2017)
Martsynkowskyy V, Kundera C, Gudkov S. Selected dynamic problems of the face packing seal. Procedia Eng 136: 150–156 (2016)
Fertman V E. Heat dissipation in high-speed magnetic fluid shaft seal. IEEE Trans Magn 16(2): 352–357 (1980)
Roth D A. Occlusion of intracranial aneurysms by ferromagnetic thrombi. J Appl Phys 40(3): 1044–1045 (1969)
Perry M P, Jones T B. Hydrostatic loading of magnetic liquid seals. IEEE Trans Magn 12(6): 798–800 (1976)
Polevikov V K. Stability of a static magnetic-fluid seal under the action of an external pressure drop. Fluid Dyn 32(3): 457–461 (1997)
Li X H, An H, Zhang P, Yu S H. Research on static sealing by ferric nitride magnetic fluid. Tribology 23(1): 69–71 (2003) (in Chinese)
Li X H, Liu Z F, An H, Zhang X L, Qi R. Preparation of nano-magnetic fluid using plasma technique and its application in static sealing. In: Proceedings of the 3rd International Symposium on Magnetic Industry, Shenyang, China, 2005: 149–150.
Chan C K, Chang C C, Yang I C, Shueh C, Kuan C K, Sheng A, Wu L H. A differential pumping system to temporarily seal a leaking, rotatable ConFlat flange. Vacuum 147: 72–77 (2018)
Nelson N R, Prasad N S. Sealing behavior of twin gasketed flange joints. Int J Press Vessels Pip 138: 45–50 (2016)
Wang J, Zhu J H, Hou J, Wang C, Zhang W H. Lightweight design of a bolt-flange sealing structure based on topology optimization. Struct Multidiscip Optim 62(6): 3413–3428 (2020)
He X Z, Li D C, Sun M L, Cui Z P, Hao R C. Experimental study of static sealing of large flanges with magnetic fluid. Chin J Vac Sci Technol 28(2): 179–181 (2008) (in Chinese)
Li D C, He X X, Zhang Z L. A study of static magnetic fluid seal of large flange diameter. In: Proceedings of the 11th International Conference on Magnetic Fluids, Kosice, Slovakia, 2008: 75–82.
Li D C, Yang W M. Experimental study of static sealing structure with large diameter and sealing gap using magnetic fluid. Acta Armamentarii 31(3): 355–359 (2010) (in Chinese)
Polevikov V, Tobiska L. Influence of diffusion of magnetic particles on stability of a static magnetic fluid seal under the action of external pressure drop. Commun Nonlinear Sci Numer Simul 16(10): 4021–4027 (2011)
Li D C, Zhang H N, Zhang Z L. Study on magnetic fluid static seal of large gap. In: Proceedings of the 7th China International Conference on High-Performance Ceramics (CICC 7), Xiamen, China, 2012: 1448–1454.
He X Z, Li D C, Zhang H N, Zhang Z L. Structure design of magnetic fluid static seal at large diameter flange. In: 7th China International Conference on High-Performance Ceramics (CICC 7), Xiamen, China, 2012: 1455–1458.
He X Z, Miao Y B, Wang L, Li D C. Latest development in sealing of liquid medium with magnetic fluid. Chin J Vac Sci Technol 39(5): 361–366 (2019) (in Chinese)
Hao D, Li D C, Chen J W, Yu J. Theoretical analysis and experimental study of the characteristics of magnetic fluid seal with a large diameter at high/low temperatures. Int J Appl Electrom 58(4): 531–550 (2018)
Parmar S, Ramani V, Upadhyay R V, Parekh K. Design and development of large radial clearance static and dynamic magnetic fluid seal. Vacuum 156: 325–333 (2018)
Radionov A, Podoltsev A, Peczkis G. The specific features of high-velocity magnetic fluid sealing complexes. Open Eng 8(1): 539–544 (2018)
Liu T G, Cheng Y S, Yang Z Y. Design optimization of seal structure for sealing liquid by magnetic fluids. J Magn Magn Mater 289: 411–414 (2005)
De Volder M, Reynaerts D. Development of a hybrid ferrofluid seal technology for miniature pneumatic and hydraulic actuators. Sens Actuat A Phys 152(2): 234–240 (2009)
Sreedhar B K, Kumar R N, Sharma P, Ruhela S, Philip J, Sundarraj S I, Chakraborty N, Mohana M, Sharma V, Padmakumar G, et al. Development of active magnetic bearings and ferrofluid seals toward oil free sodium pumps. Nucl Eng Des 265: 1166–1174 (2013)
Yang X L, Li D C. Experimental investigation of diverging stepped magnetic fluid seals with large sealing gap. Int J Appl Electromagn Mech 50(3): 407–415 (2016)
Wang H J, Li D C, He X Z, Li Z K. Performance of the ferrofluid seal with gas isolation device for sealing liquids. Int J Appl Electromagn Mech 57(1): 107–122 (2018)
Li X R, Li Z G, Zhu B S, Cheng J, Li W X, Yuan J Y. Optimal design of large gap magnetic fluid sealing device in a liquid environment. J Magn Magn Mater 540: 168472 (2021)
Taketomi S. Motion of ferrite particles under a high gradient magnetic field in a magnetic fluid shaft seal. Jpn J Appl Phys 19(10): 1929–1936 (1980)
Park G S, Kim D H, Hahn S Y, Lee K S. Numerical algorithm for analyzing the magnetic fluid seals. IEEE Trans Magn 30(5): 3351–3354 (1994)
Bonvouloir J. Experimental study of high speed sealing capability of single stage ferrofluidic seals. J Tribol 119(3): 416–421 (1997)
Kim Y S, Nakatsuka K, Fujita T, Atarashi T. Application of hydrophilic magnetic fluid to oil seal. J Magn Magn Mater 201(1–3): 361–363 (1999)
Sekine K, Mitamura Y, Murabayashi S, Nishimura I, Yozu R, Kim D W. Development of a magnetic fluid shaft seal for an axial-flow blood pump. Artif Organs 27(10): 892–896 (2003)
Zhao M, Zou J B, Hu J H. An analysis on the magnetic fluid seal capacity. J Magn Magn Mater 303(2): e428–e431 (2006)
Szydło Z, Matuszewski L. Experimental research on effectiveness of the magnetic fluid seals for rotary shafts working in water. Pol Marit Res 14(4): 53–58 (2007)
Krakov M S, Nikiforov I V. Influence of the shaft rotation on the stability of magnetic fluid shaft seal characteristics. Magnetohydrodynamics 44(4): 401–408 (2008)
Kim D Y, Bae H S, Park M K, Yu S C, Yun Y S, Cho C P, Yamane R. A study of magnetic fluid seals for underwater robotic vehicles. Int J Appl Electromagn Mech 33(1–2): 857–863 (2010)
Ravaud R, Lemarquand G, Lemarquand V. Mechanical properties of ferrofluid applications: Centering effect and capacity of a seal. Tribol Int 43(1–2): 76–82 (2010)
Pinho M, Génevaux J M, Dauchez N, Brouard B, Collas P, Mézière H. Damping induced by ferrofluid seals in ironless loudspeaker. J Magn Magn Mater 356: 125–130 (2014)
Matuszewski L. Multi-stage magnetic-fluid seals for operating in water–life test procedure, test stand and research results. Part I Life test procedure, test stand and instrumentation Pol Marit Res 19(4): 62–70 (2012)
Matuszewski L. Multi-stage magnetic-fluid seals for operating in water–life test procedure, test stand and research results. Part II Results of life tests of multi-stage magnetic-fluid seal operating in water Pol Marit Res 20(1): 39–47 (2013)
Schinteie G, Palade P, Vekas L, Iacob N, Bartha C, Kuneser V. Volume fraction dependent magnetic behaviour of ferrofluids for rotating seal applications. J Phys D 46(39): 395501 (2013)
Cai Y Q, Xing N. The analysis on the starting friction torque increase of magnetic fluid revolving sealing. Appl Mech Mater 275–277: 429–432 (2013)
Liu J. Numerical analysis of secondary flow in the narrow gap of magnetic fluid shaft seal using a spectral finite difference method. Tribol Trans 59(2): 309–315 (2016)
Tomioka J, Miyanaga N. Blood sealing properties of magnetic fluid seals. Tribol Int 113: 338–343 (2017)
Li Z K, Li D C, Chen Y B, Yang Y L, Yao J. Influence of viscosity and magnetoviscous effect on the performance of a magnetic fluid seal in a water environment. Tribol Trans 61(2): 367–375 (2018)
Hu Z D, Dai Q W, Huang W, Wang X L. Liquid–gas support and lubrication based on a ferrofluid seal. J Phys D Appl Phys 53(2): 025002 (2020)
Van der Wal K, van Ostayen R A J, Lampaert S G E. Ferrofluid rotary seal with replenishment system for sealing liquids. Tribol Int 150: 106372 (2020)
Yang X L, Guan Y, Li Y, Li D C. Experimental study of converging ferrofluid seal with small clearance and double magnetic sources. Tribol Trans 64(6): 1046–1054 (2021)
Cheng Y H, Li D C, Li Z K. Influence of rheological properties on the starting torque of magnetic fluid seal. IEEE Trans Magn 57(3): 4600308 (2021)
Goldowsky M. New methods for sealing, filtering and lubricating with magnetic fluids. IEEE Trans Magn 16(2): 382–386 (1980)
Miyake S, Takahashi S. Characteristics of a ferromagnetic linear vacuum seal. ASLE Trans 28(3): 358–363 (1985)
Evsin S I, Sokolov N A, Stradomsky Y I, Charkovsky V B. Development of magnetic fluid reciprocating motion seals. J Magn Magn Mater 85(1–3): 253–256 (1990)
Li D C, Hong J P, Yang Q X, Wang X T. Motion state analysis and seal ability study on the magnetic fluid seal of reciprocating shaft. Chin J Aeronaut 15(2): 115–120 (2002)
Li D C, Lan H Q, Bai X X, Wang Z S. Study on flowing state of magnetic fluid in seal gap of reciprocating shaft. J Beijing Univ Aeronaut Astronaut 29(2): 185–188 (2003) (in Chinese)
Li D C, Xu H P, He X Z, Lan H Q. Mechanism of magnetic liquid flowing in the magnetic liquid seal gap of reciprocating shaft. J Magn Magn Mater 289: 407–410 (2005)
Li D C, Xu H P, He X Z, Lan H Q. Theoretical and experimental study on the magnetic fluid seal of reciprocating shaft. J Magn Magn Mater 289: 399–402 (2005)
Ochoński W. Vakuum-lineardurchführungen mit magnetflüssigkeitsdichtungen. Vak Forsch Prax 20(1): 22–27 (2008) (in German)
Mizutani Y, Sawano H, Yoshioka H, Shinno H. Magnetic fluid seal for linear motion system with gravity compensator. In: Proceedings of the 9th CIRP International Conference on Intelligent Computation in Manufacturing Engineering, Capri, Italy, 2015: 581–586.
Chen Y B, Li D C, Zhang Y J, He C Y. Numerical analysis and experimental study on magnetic fluid reciprocating seals. IEEE Trans Magn 55(1): 4600106 (2019)
Raj K, Moskowitz B, Casciari R. Advances in ferrofluid technology. J Magn Magn Mater 149(1–2): 174–180 (1995)
Finsterle S, Cooper C, Muller R A, Grimsich J, Apps J. Sealing of a deep horizontal borehole repository for nuclear waste. Energies 14(1): 91 (2021)
Ritter J J. Modular magnetically coupled high-speed stirrer for hermetically sealed chemical reactors. Rev Sci Instrum 59(2): 374–376 (1988)
Zhou S Y, Wang B X, Wu D J, Ma G Y, Yang G, Wei W Y. Follow-up ultrasonic vibration assisted laser welding dissimilar metals for nuclear reactor pump can end sealing. Nucl Mater Energy 27: 100975 (2021)
Kochurin E A, Zubarev N M. Chaotic dynamics of the interface between dielectric liquids at the regime of stabilized Kelvin–Helmholtz instability by a tangential electric field. Fluids 6(3): 125 (2021)
Budiana E P, Pranowo, Indarto, Deendarlianto. The meshless numerical simulation of Kelvin–Helmholtz instability during the wave growth of liquid–liquid slug flow. Comput Math Appl 80(7): 1810–1838 (2020)
Liu G, Wang Y S, Zang G J, Zhao H T. Viscous Kelvin–Helmholtz instability analysis of liquid-vapor two-phase stratified flow for condensation in horizontal tubes. Int J Heat Mass Transf 84: 592–599 (2015)
Trujillo-Rodríguez M J, Anderson J L. In situ generation of hydrophobic magnetic ionic liquids in stir bar dispersive liquid–liquid microextraction coupled with headspace gas chromatography. Talanta 196: 420–428 (2019)
Trujillo-Rodríguez M J, Anderson J L. In situ formation of hydrophobic magnetic ionic liquids for dispersive liquid–liquid microextraction. J Chromatogr A 1588: 8–16 (2019)
Davudabadi Farahani M, Shemirani F. Supported hydrophobic ionic liquid on magnetic nanoparticles as a new sorbent for separation and preconcentration of lead and cadmium in milk and water samples. Microchim Acta 179(3–4): 219–226 (2012)
Matuszewski L, Szydło Z. The application of magnetic fluids in sealing nodes designed for operation in difficult conditions and in machines used in sea environment. Pol Marit Res 15(3): 49–58 (2008)
Mitamura Y, Takahashi S, Kano K, Okamoto E, Murabayashi S, Nishimura I, Higuchi T A. Sealing performance of a magnetic fluid seal for rotary blood pumps. Artif Organs 33(9): 770–773 (2009)
Chen Y, Li D C. (2011) Design and experiments for magnetic fluid seal of tank panoramic mirror. Acta Armamentarii 32(11): 1428–1432 (2011) (in Chinese)
Li J, Xue K M, Sun G Z, Cao A M. Precise extrusion process of waveguide component for radar use. J Plast Eng 20(4): 1–5 (2013) (in Chinese)
Fu D B, Jiang Y. Dynamics simulation of guided missile launcher based on coupled rigid and flexible model. J Syst Simul 21(6): 1789–1791, 1796 (2009) (in Chinese)
Cong M, Wen H Y, Du Y, Dai P L. Coaxial twin-shaft magnetic fluid seals applied in vacuum wafer-handling robot. Chin J Mech Eng 25(4): 706–714 (2012)
Sekiguchi H, Iwasaki T, Harima T. Development of clean room robot with four revolute joints using parallelogram arm mechanism. J Jpn Soc Precis Eng 56(4): 655–660 (1990) (in Japanese)
Mizumoto M, Inoue H. Development of a magnetic liquid seal for clean robots. J Magn Magn Mater 65(2–3): 385–388 (1987)
Raj K, Chorney A F. Ferrofluid technology—An overview. Indian J Eng Mater Sci 5(6): 372–389 (1998)
Wang Y F, Yin K Y, Yuan Y X, Chen J. Current-limiting soft starting method for a high-voltage and high-power motor. Energies 12(16): 3068 (2019)
Yu H G, Tao J F, Qin C J, Liu M Y, Xiao D Y, Sun H, Liu C L. A novel constrained dense convolutional autoencoder and DNN-based semi-supervised method for shield machine tunnel geological formation recognition. Mech Syst Signal Process 165: 108353 (2022)
Hellum V, Lassen T, Spagnoli A. Crack growth models for multiaxial fatigue in a ship’s propeller shaft. Eng Fail Anal 127: 105470 (2021)
Jiang J B, Zhao W J, Peng X D, Li J Y. A novel design for discrete surface texture on gas face seals based on a superposed groove model. Tribol Int 147: 106269 (2020)
Shuster M, Seasons R, Burke D. Laboratory simulation to select oil seal and surface treatment. Wear 225–229: 954–961 (1999)
Manukyan S, Schneider M. Experimental investigation of wetting with magnetic fluids. Langmuir 32(20): 5135–5140 (2016)
Edalatpour M, Sommers A D, Eid K F. Variations of the static contact angle of ferrofluid droplets on solid horizontal surfaces in external uniform magnetic fields. Langmuir 36(22): 6314–6322 (2020)
El-Kabeir S, Rashad A, Khan W, Abdelrahman Z M. Micropolar ferrofluid flow via natural convective about a radiative isoflux sphere. Adv Mech Eng 13(2): 1687814021994392 (2021)
Dutz S, Buske N, Landers J, Gräfe C, Wende H, Clement J H. Biocompatible magnetic fluids of co-doped iron oxide nanoparticles with tunable magnetic properties. Nanomaterials 10(6): 1019 (2020)
Patade S R, Andhare D D, Somvanshi S B, Jadhav S A, Khedkar M V, Jadhav K M. Self-heating evaluation of superparamagnetic MnFe2O4 nanoparticles for magnetic fluid hyperthermia application towards cancer treatment. Ceram Int 46(16): 25576–25583 (2020)
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Cite this article:
LI D, LI Y, LI Z, et al. Theory analyses and applications of magnetic fluids in sealing. Friction, 2023, 11(10): 1771-1793.








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Received: 27 January 2022
Revised: 05 June 2022
Accepted: 19 July 2022
Published: 02 March 2023
© The author(s) 2022.

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