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Journal of Advanced Ceramics 2021, 10(3): 472-481 https://doi.org/10.1007/s40145-020-0449-7
Research Article | Open Access | Issue | Published: 01 March 2021

Effects of surface roughness on CMAS corrosion behavior for thermal barrier coating applications

Show Author's Information Lei GUOa,b( ),  Guang LIa,  Zhilin GANa
School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
Tianjin Key Laboratory of Advanced Joining Technology, Key Lab of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin 300072, China
Keywords:
surface roughness, spreading, thermal barrier coating (TBC), wetting, calcium–magnesium–alumina–silicate (CMAS)
Cite this article:
GUO L, LI G, GAN Z. Effects of surface roughness on CMAS corrosion behavior for thermal barrier coating applications. Journal of Advanced Ceramics, 2021, 10(3): 472-481. https://doi.org/10.1007/s40145-020-0449-7
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Abstract Full text About this article

Calcium–magnesium–alumina–silicate (CMAS) corrosion is an important cause for thermal barrier coating (TBC) failure, which has attracted increased attentions. In this study, some thermal barrier coating (TBC) materials including YSZ (yttria partially stabilized zirconia), GdPO4, and LaPO4 were prepared into bulks, and the effects of their surface roughness on wettability and spreading characteristics of molten CMAS were investigated. As-fabricated and polished bulks with different surface roughness were exposed to CMAS corrosion at 1250 ℃ for 1 and 4 h, following by macro and micro observations. Results revealed that compared with the as-fabricated bulks, molten CMAS on the polished samples had lower wettability and a smaller spreading area, mainly attributable to the reduced capillary force to drive the melt spreading. Meanwhile, GdPO4 and LaPO4 bulks exhibited lower CMAS wettability than YSZ bulk. It is thus considered that reducing the surface roughness is beneficial to CMAS corrosion resistance of TBCs.


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About this article

Effects of surface roughness on CMAS corrosion behavior for thermal barrier coating applications

Show Author's information Lei GUOa,b( ), Guang LIa, Zhilin GANa
School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
Tianjin Key Laboratory of Advanced Joining Technology, Key Lab of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin 300072, China

Abstract

Calcium–magnesium–alumina–silicate (CMAS) corrosion is an important cause for thermal barrier coating (TBC) failure, which has attracted increased attentions. In this study, some thermal barrier coating (TBC) materials including YSZ (yttria partially stabilized zirconia), GdPO4, and LaPO4 were prepared into bulks, and the effects of their surface roughness on wettability and spreading characteristics of molten CMAS were investigated. As-fabricated and polished bulks with different surface roughness were exposed to CMAS corrosion at 1250 ℃ for 1 and 4 h, following by macro and micro observations. Results revealed that compared with the as-fabricated bulks, molten CMAS on the polished samples had lower wettability and a smaller spreading area, mainly attributable to the reduced capillary force to drive the melt spreading. Meanwhile, GdPO4 and LaPO4 bulks exhibited lower CMAS wettability than YSZ bulk. It is thus considered that reducing the surface roughness is beneficial to CMAS corrosion resistance of TBCs.

Keywords: surface roughness, spreading, thermal barrier coating (TBC), wetting, calcium–magnesium–alumina–silicate (CMAS)

References(33)

[1]
Padture NP, Gell M, Jordan EH. Thermal barrier coatings for gas-turbine engine applications. Science 2002, 296: 280-284.
DOI Google Scholar
[2]
Darolia R. Thermal barrier coatings technology: Critical review, progress update, remaining challenges and prospects. Int Mater Rev 2013, 58: 315-348.
DOI Google Scholar
[3]
Levi CG. Emerging materials and processes for thermal barrier systems. Curr Opin Solid State Mater Sci 2004, 8: 77-91.
DOI Google Scholar
[4]
Guo L, Xin H, Zhang Z, et al. Microstructure modification of Y2O3 stabilized ZrO2 thermal barrier coatings by laser glazing and the effects on the hot corrosion resistance. J Adv Ceram 2020, 9: 232-242.
DOI Google Scholar
[5]
Zhu RB, Zou JP, Mao J, et al. Fabrication and growing kinetics of highly dispersed gadolinium zirconate nanoparticles. Res Appl Mater Sci 2019, 1: 28-34.
DOI Google Scholar
[6]
Levi CG, Hutchinson JW, Vidal-Sétif MH, et al. Environmental degradation of thermal-barrier coatings by molten deposits. MRS Bull 2012, 37: 932-941.
DOI Google Scholar
[7]
Mercer C, Faulhaber S, Evans AG, et al. A delamination mechanism for thermal barrier coatings subject to calcium-magnesium-alumino-silicate (CMAS) infiltration. Acta Mater 2005, 53: 1029-1039.
DOI Google Scholar
[8]
Krämer S, Yang J, Levi CG, et al. Thermochemical interaction of thermal barrier coatings with molten CaO-MgO-Al2O3-SiO2 (CMAS) deposits. J Am Ceram Soc 2006, 89: 3167-3175.
DOI Google Scholar
[9]
Guo L, Yan Z, Yu Y, et al. CMAS resistance characteristics of LaPO4/YSZ thermal barrier coatings at 1250°C–1350°C. Corros Sci 2019, 154: 111-122.
DOI Google Scholar
[10]
Guo L, Yan Z, Li ZH, et al. GdPO4 as a novel candidate for thermal barrier coating applications at elevated temperatures. Surf Coat Technol 2018, 349: 400-406.
DOI Google Scholar
[11]
Wang F, Guo L, Wang CM, et al. Calcium-magnesium-alumina-silicate (CMAS) resistance characteristics of LnPO4 (Ln = Nd, Sm, Gd) thermal barrier oxides. J Eur Ceram Soc 2017, 37: 289-296.
DOI Google Scholar
[12]
Guo L, Li MZ, Cheng YX, et al. Plasma sprayed nanostructured GdPO4 thermal barrier coatings: Preparation microstructure and CMAS corrosion resistance. J Am Ceram Soc 2017, 100: 4209-4218.
DOI Google Scholar
[13]
Mao WG, Wang YJ, Shi J, et al. Bending fracture behavior of freestanding (Gd0.9Yb0.1)2Zr2O7 coatings by using digital image correlation and FEM simulation with 3D geometrical reconstruction. J Adv Ceram 2019, 8: 564-575.
DOI Google Scholar
[14]
Song WJ, Lavallée Y, Wadsworth FB, et al. Wetting and spreading of molten volcanic ash in jet engines. J Phys Chem Lett 2017, 8: 1878-1884.
DOI Google Scholar
[15]
Li F, Zhou L, Liu JX, et al. High-entropy pyrochlores with low thermal conductivity for thermal barrier coating materials. J Adv Ceram 2019, 8: 576-582.
DOI Google Scholar
[16]
Zeng Z. Interface Phenomenon. Shanghai: East China University of Science and Technology Press, 2015.
[17]
Tavana H, Simon F, Grundke K, et al. Interpretation of contact angle measurements on two different fluoropolymers for the determination of solid surface tension. J Colloid Interface Sci 2005, 291: 497-506.
DOI Google Scholar
[18]
Kumar G, Prabhu KN. Review of non-reactive and reactive wetting of liquids on surfaces. Adv Colloid Interface Sci 2007, 133: 61-89.
DOI Google Scholar
[19]
Zhang BP, Song WJ, Guo HB. Wetting, infiltration and interaction behavior of CMAS towards columnar YSZ coatings deposited by plasma spray physical vapor. J Eur Ceram Soc 2018, 38: 3564-3572.
DOI Google Scholar
[20]
Kang YX, Bai Y, Du GQ, et al. High temperature wettability between CMAS and YSZ coating with tailored surface microstructures. Mater Lett 2018, 229: 40-43.
DOI Google Scholar
[21]
Li BT, Chen Z, Zheng HZ, et al. Wetting mechanism of CMAS melt on YSZ surface at high temperature: First-principles calculation. Appl Surf Sci 2019, 483: 811-818.
DOI Google Scholar
[22]
Zhou PF, Li GF, Zhang YQ, et al. Infiltration mechanism of Ca-Mg-Al-silicate (CMAS) melt on yttria stabilized zirconia (YSZ) columnar crystal at high temperature: First-principles research. Appl Surf Sci 2020, 513: 145712.
DOI Google Scholar
[23]
Qu WW, Li SS, Chen ZH, et al. Hot corrosion behavior and wettability of calcium-magnesium-alumina-silicate (CMAS) on LaTi2Al9O19 ceramic. Corros Sci 2020, 162: 108199.
DOI Google Scholar
[24]
Wenzel RN. Resistance of solid surfaces to wetting by water. Ind Eng Chem 1936, 28: 988-994.
DOI Google Scholar
[25]
Krause AR, Garces HF, Dwivedi G, et al. Calcia-magnesia-alumino-silicate (CMAS)-induced degradation and failure of air plasma sprayed yttria-stabilized zirconia thermal barrier coatings. Acta Mater 2016, 105: 355-366.
DOI Google Scholar
[26]
Krause AR, Li X, Padture NP. Interaction between ceramic powder and molten calcia-magnesia-alumino-silicate (CMAS) glass, and its implication on CMAS-resistant thermal barrier coatings. Scripta Mater 2016, 112: 118-122.
DOI Google Scholar
[27]
Yost FG, Rye RR, Mann JA Jr. Solder wetting kinetics in narrow V-grooves. Acta Mater 1997, 45: 5337-5345.
DOI Google Scholar
[28]
Rye RR, Mann JA, Yost FG. The flow of liquids in surface grooves. Langmuir 1996, 12: 555-565.
DOI Google Scholar
[29]
Li MZ. Research on thermal cycling performance and CMAS corrosion behavior of GdPO4 thermal barrier coating. Tianjin University, 2018.
[30]
El Ouenzerfi R, Panczer G, Goutaudier C, et al. Relationships between structural and luminescence properties in Eu3+-doped oxyphosphate-silicate apatite Ca2+xLa8−x(SiO4)6−x (PO4)xO2. Opt Mater 2001, 16: 301-310.
DOI Google Scholar
[31]
Krämer S, Yang J, Levi CG. Infiltration-inhibiting reaction of gadolinium zirconate thermal barrier coatings with CMAS melts. J Am Ceram Soc 2008, 91: 576-583.
DOI Google Scholar
[32]
Wang XY, Zhang L, Zhang ZJ, et al. Effects of pH value on growth morphology of LaPO4 nanocrystals: Investigated from experiment and theoretical calculations. Appl Phys A 2016, 122: 508.
DOI Google Scholar
[33]
Li BT, Chen Z, Zheng HZ, et al. Wetting mechanism of CMAS melt on YSZ surface at high temperature: First-principles calculation. Appl Surf Sci 2019, 483: 811-818.
DOI Google Scholar
Publication history
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Publication history

Received: 16 August 2020
Revised: 17 December 2020
Accepted: 22 December 2020
Published: 01 March 2021
Issue date: June 2021

Copyright

© The Author(s) 2020

Acknowledgements

This research is sponsored by the National Natural Science Foundation of China (Grant No. 51971156).

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