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This study achieved water-based superlubricity with the lubrication of H3PO4 solution in vacuum (highest vacuum degree <10-4 torr) for the first time by performing a pre-running process in air before running in vacuum. The stable water-based superlubricity was sustainable in vacuum (0.02 torr) for 14 h until the test was stopped by the user for non-experimental factor. A further analysis suggested that the superlubricity may be attributed to the phosphoric acid-water network formed in air, which can efficiently lock water molecules in the liquid lubricating film even in vacuum owing to the strong hydrogen bond interaction. Such capability to lock water is strongly affected by the strength of hydrogen bond and environmental conditions. The realization of water-based superlubricity with H3PO4 solution in vacuum can lead to its application in space environment.


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Water-based superlubricity in vacuum

Show Author's information Chen XIAO1Jinjin LI2Lei CHEN1Chenhui ZHANG2Ningning ZHOU3Tao QING3Linmao QIAN1( )Jiyang ZHANG3Jianbin LUO2
Tribology Research Institute, State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms, Beijing Institute of Control Engineering, Beijing 100094, China

Abstract

This study achieved water-based superlubricity with the lubrication of H3PO4 solution in vacuum (highest vacuum degree <10-4 torr) for the first time by performing a pre-running process in air before running in vacuum. The stable water-based superlubricity was sustainable in vacuum (0.02 torr) for 14 h until the test was stopped by the user for non-experimental factor. A further analysis suggested that the superlubricity may be attributed to the phosphoric acid-water network formed in air, which can efficiently lock water molecules in the liquid lubricating film even in vacuum owing to the strong hydrogen bond interaction. Such capability to lock water is strongly affected by the strength of hydrogen bond and environmental conditions. The realization of water-based superlubricity with H3PO4 solution in vacuum can lead to its application in space environment.

Keywords: friction, vacuum, phosphoric acid, water-based superlubricity

References(35)

[1]
X Q Fan, Q J Xue, L P Wang. Carbon-based solid-liquid lubricating coatings for space applications-a review. Friction 3(3): 191-207 (2015)
[2]
W R Jones Jr, B A Shogrin, M J Jansen. Research on liquid lubricants for space mechanisms. Lubr Sci 17(2): 109-122 (2000)
[3]
M Masuko, W R Jones Jr, L S Helmick. Tribological characteristics of perfluoropolyether liquid lubricants under sliding conditions in high vacuum. Lubr Sci 11(2): 111-119 (1994)
[4]
E V Zaretsky. Liquid lubrication in space. Tribol Int 23(2): 75-93 (1990)
[5]
B Bhushan. Principles and Applications of Tribology. New York (USA): John Wiley & Sons, 2013.
DOI
[6]
C Xiao, J J Li, L Chen, C H Zhang, N N Zhou, L M Qian, J B Luo. Speed dependence of liquid superlubricity stability with H3PO4 solution. RSC Adv 7(78): 49337-49343 (2017)
[7]
J J Li, C H Zhang, M M Deng, J B Luo. Investigation of the difference in liquid superlubricity between water- and oil-based lubricants. RSC Adv 5(78): 63827-63833 (2015)
[8]
J J Li, J B Luo. Advancements in superlubricity. Sci China Technol Sci 56(12): 2877-2887 (2013)
[9]
U Raviv, P Laurat, J Klein. Fluidity of water confined to subnanometre films. Nature 413(6851): 51-54 (2001)
[10]
M Hirano, K Shinjo. Atomistic locking and friction. Phys Rev B Condens Matter 41(17): 11837-11851 (1990)
[11]
K Shinjo, M Hirano. Dynamics of friction: superlubric state. Surf Sci 283(1-3): 473-478 (1993)
[12]
A Erdemir, J M Martin. Superlubricity. New York (USA): Elsevier, 2007.
[13]
J Xu, J J Li. New achievements in superlubricity from international workshop on superlubricity: fundamental and applications. Friction 3(4): 344-351 (2015)
[14]
P X Liu, Y H Liu, Y Y Yang, Z Chen, J J Li, J B Luo. Mechanism of biological liquid superlubricity of Brasenia schreberi mucilage. Langmuir 30(13): 3811-3816 (2014)
[15]
J J Li, C H Zhang, M M Deng, J B Luo. Superlubricity of silicone oil achieved between two surfaces by running-in with acid solution. RSC Adv 5(39): 30861-30868 (2015)
[16]
M Chen, W H Briscoe, S P Armes, J Klein. Lubrication at physiological pressures by polyzwitterionic brushes. Science 323(5922): 1698-1701 (2009)
[17]
J Klein, E Kumacheva, D Mahalu, D Perahia, L J Fetters. Reduction of frictional forces between solid surfaces bearing polymer brushes. Nature 370(6491): 634-636 (1994)
[18]
M Chen, K Kato, K Adachi. Friction and wear of self-mated SiC and Si3N4 sliding in water. Wear 250(1-12): 246-255 (2001)
[19]
J J Li, C H Zhang, J B Luo. Superlubricity behavior with phosphoric acid-water network induced by rubbing. Langmuir 27(15): 9413-9417 (2011)
[20]
J Klein. Hydration lubrication. Friction 1(1): 1-23 (2013)
[21]
M M Deng, C H Zhang, J J Li, L R Ma, J B Luo. Hydrodynamic effect on the superlubricity of phosphoric acid between ceramic and sapphire. Friction 2(2): 173-181 (2014)
[22]
Z Chen, Y H Liu, S H Zhang, J B Luo. Controllable superlubricity of glycerol solution via environment humidity. Langmuir 29(38): 11924-11930 (2013)
[23]
H Kameno, A Kubo, S GÄCHTER, R Takahata. Basic design of 1 kWh class compact flywheel energy storage system-application of active magnetic bearings with zero-power nonlinear control method. Koyo Eng J Engl Edit 163E: 44-48 (2003)
[24]
K L Johnson. Contact Mechanics. Cambridge (UK): Cambridge University Press, 1987.
[25]
J J Li, C H Zhang, L Sun, J B Luo. Analysis of measurement inaccuracy in superlubricity Tests. Tribol Trans 56(1): 141-147 (2013)
[26]
G P Zhou, Y B Wang. Density function theory on intermolecular interactions of H3PO4 with H2O. J Northwest Norm Univ Nat Sci 48(1): 74-79 (2012)
[27]
J J Li, C H Zhang, J B Luo. Effect of pH on the liquid superlubricity between Si3N4 and glass achieved with phosphoric acid. RSC Adv 4(86): 45735-45741 (2014)
[28]
J J Li, C H Zhang, M M Deng, J B Luo. Investigations of the superlubricity of sapphire against ruby under phosphoric acid lubrication. Friction 2(2): 164-172 (2014)
[29]
P M Pihko. Hydrogen Bonding in Organic Synthesis. Weinheim (Germany): Wiley-VCH, 2009.
DOI
[30]
G A Jeffrey, W Saenger. Hydrogen Bonding in Biological Structures. Berlin (Germany): Springer, 2012.
[31]
R Gilmour. Phosphoric Acid: Purification, Uses, Technology, and Economics. Boca Raton, Florida (USA): CRC Press, 2013.
DOI
[32]
J N Israelachvili. Intermolecular and Surface Forces. Pittsburgh (USA): Academic Press, 2011.
[33]
C S Ewig, J R Van Wazer. Ab initio structures of phosphorus acids and esters. 1. Phosphinic, phosphonic, and phosphoric acids. J Am Chem Soc 107(7): 1965-1971 (1985)
[34]
J J Li, L R Ma, S H Zhang, C H Zhang, Y H Liu, J B Luo. Investigations on the mechanism of superlubricity achieved with phosphoric acid solution by direct observation. J Appl Phys 114(11): 114901 (2013)
[35]
J J Li, C H Zhang, L R Ma, Y H Liu, J B Luo. Superlubricity achieved with mixtures of acids and glycerol. Langmuir 29(1): 271-275 (2013)
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Publication history

Received: 10 September 2017
Revised: 06 November 2017
Accepted: 10 February 2018
Published: 04 April 2018
Issue date: April 2019

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© The author(s) 2018

Acknowledgements

The authors are grateful for the financial support from the National Natural Science Foundation of China (Nos. 51527901, 51405256), and Self-developed Project of State Key Laboratory of Traction Power (No. 2017TPL_Z02).

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