한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제49권6호
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  • Pages.604-611
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  • 2016
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  • 1225-8024(pISSN)
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  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
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서스펜션 플라즈마 용사법으로 제조한 La2Zr2O7, (La0.5Gd0.5)2Zr2O7, Gd2Zr2O7 열차폐코팅의 상형성과 열전도 특성

Phase Formation and Thermal Diffusivity of Thermal Barrier Coatings of La2Zr2O7, (La0.5Gd0.5)2Zr2O7, Gd2Zr2O7 Fabricated by Suspension Plasma Spray

  • 김선주 (한국세라믹기술원 이천분원 엔지니어링세라믹센터) ;
  • 이성민 (한국세라믹기술원 이천분원 엔지니어링세라믹센터) ;
  • 오윤석 (한국세라믹기술원 이천분원 엔지니어링세라믹센터) ;
  • 김형태 (한국세라믹기술원 이천분원 엔지니어링세라믹센터) ;
  • 장병국 (물질재료연구기구 구조재료연구센터) ;
  • 김성원 (한국세라믹기술원 이천분원 엔지니어링세라믹센터)
  • Kim, Sun-Joo (Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Sung-Min (Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Oh, Yoon-Suk (Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Hyung-Tae (Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Jang, Byung-Koog (Research Center for Structural Materials, National Institute for Materials) ;
  • Kim, Seongwon (Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology)
  • 투고 : 2016.12.14
  • 심사 : 2016.12.28
  • 발행 : 2016.12.31
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초록

In order to comply with demand for high efficient gas turbines operating at higher temperatures, considerable amounts of research efforts have been performed with searching for the next-generation thermal barrier coatings (TBCs) with respect to coating materials as well as processing methods. In this study, thermal barrier coatings in the $(La_{1-x}Gd_x)_2Zr_2O_7$ system, which is one of the most versatile materials replacing yttria-stabilized zirconia (YSZ), are fabricated by suspension plasma spray with suspension made of synthesized powders via solidstate reaction. Dense, $100{\sim}400{\mu}m$ thick coatings of fluorite-phase zirconate with moderate amount of segmented microstructures are obtained by using suspension plasma spray. Phase formation and thermal diffusivity are characterized with coating compositions. The feasibility of $(La_{1-x}Gd_x)_2Zr_2O_7$ coatings for TBC applications is also discussed.

키워드

참고문헌

  1. D. R. Clarke, S. R. Phillpot, Thermal Barrier Coating Materials, Mater. Today, 8 (2005) 22-29.
  2. R. Vassen, M. O. Jarligo, T. Steinke, D. E. Mack, D. Stover, Overview on Advanced Thermal Barrier Coatings, Surf. Coat. Technol., 205 (2010) 938-942. https://doi.org/10.1016/j.surfcoat.2010.08.151
  3. D. R. Clarke, M. Oechsner, N. P. Padture, Thermal-Barrier Coatings for More Efficient Gas-Turbine Engines, MRS Bull., 37 (2012) 891-898. https://doi.org/10.1557/mrs.2012.232
  4. C.-S. Kwon, S.-M. Lee, Y.-S. Oh, H.-T. Kim, B.-K. Jang, S. Kim, Structure and Thermal Conductivity of Thermal Barrier Coatings in Lanthanum/Gadolinium Zirconate System Fabricated via Suspension Plasma Spray(in Korean), J. Korean Inst. Surf. Eng., 47 (2014) 316-322. https://doi.org/10.5695/JKISE.2014.47.6.316
  5. S. Sampath, U. Schulz, M. O. Jarligo, S. Kuroda, S. Kuroda, Processing Science of Advanced Thermal-Barrier Systems, MRS Bull., 37 (2012) 903-910. https://doi.org/10.1557/mrs.2012.233
  6. W. Pan, S. R. Phillpot, C. Wan, A. Chernatynskiy, Z. Qu, Low Thermal Conductivity Oxides, MRS Bull., 37 (2012) 917-922. https://doi.org/10.1557/mrs.2012.234
  7. C.-S. Kwon, S. Lee, S.-M. Lee, Y.-S. Oh, H.-T. Kim, B.-K. Jang, S. Kim, Fabrication and Characterization of $La_2Zr_2O_7$/YSZ Double-Ceramic-Layer Thermal Barrier Coatings Fabricated by Suspension Plasma Spray(in Korean), J. Korean Inst. Surf. Eng., 48 (2015) 315-321. https://doi.org/10.5695/JKISE.2015.48.6.315
  8. R. Vassen, X. Cao, F. Tietz, D. Basu, D. Stover, Zirconates as New Materials for Thermal Barrier Coatings, J. Am. Ceram. Soc., 83 (2000) 2023-2028.
  9. J. Wu, X. Wei, N. P. Padture, P. G. Klemens, M. Gell, E. Garcia, P. Miranzo, M. I. Osendi, Low-Thermal-Conductivity Rare-Earth Zirconates for Potential Thermal-Barrier-Coating Applications, J. Am. Ceram. Soc., 85 (2002) 3031-3035.
  10. S.-J. Kim, W.-J. Lee, C.-S. Kwon, S.-M. Lee, Y.-S. Oh, H.-T. Kim, D.-S. Im, S. Kim, Phase Formation and Thermo-physical Properties of $GdO_{1.5}_-ZrO_2$ System for Thermal Barrier Coating Application(in Korean), J. Korean Ceram. Soc., 51 (2014) 554-559. https://doi.org/10.4191/kcers.2014.51.6.554
  11. J. W. Fergus, Zirconia and Pyrochlore Oxides for Thermal Barrier Coatings in Gas Turbine Engines, Metall. Mater. Trans. E, (2014) 1-14.
  12. X. Q. Cao, R. Vassen, D. Stoever, Ceramic Materials for Thermal Barrier Coatings, J. Euro. Ceram. Soc., 24 (2004) 1-10. https://doi.org/10.1016/S0955-2219(03)00129-8
  13. R. Vassen, H. Kassner, A. Stuke, F. Hauler, D. Hathiramani, D. Stover, Advanced Thermal Spray Technologies for Applications in Energy Systems, Surf. Coat. Technol., 202 (2008) 4432-4437. https://doi.org/10.1016/j.surfcoat.2008.04.022
  14. U. Schulz, B. Saruhan, K. Fritscher, C. Leyens, Review on Advanced EB-PVD Ceramic Topcoats for TBC Applications, Inter. J. Appl. Ceram. Technol., 1 (2004) 302-315.
  15. W.-J. Lee, Y.-S. Oh, S.-M. Lee, H.-T. Kim, D.-S. Lim, S. Kim, Fabrication and Characterization of 7.5 wt% $Y_2O_3-ZrO_2$ Thermal Barrier Coatings Deposited by Suspension Plasma Spray(in Korean), J. Korean Ceram. Soc., 51 (2014) 598-604. https://doi.org/10.4191/kcers.2014.51.6.598
  16. W. Fan, Y. Bai, Review of Suspension and Solution Precursor Plasma Sprayed Thermal Barrier Coatings, Ceram. Inter., 42 (2016) 14299-14312. https://doi.org/10.1016/j.ceramint.2016.06.063
  17. K. VanEvery, M. J. M. Krane, R. W. Trice, H. Wang, W. Porter, M. Besser, D. Sordelet, J. Ilavsky, J. Almer, Column Formation in Suspension Plasma-Sprayed Coatings and Resultant Thermal Properties, J. Therm. Spray Technol., 20 (2011) 817-828. https://doi.org/10.1007/s11666-011-9632-2
  18. N. Curry, Z. Tang, N. Markocsan, P. Nylen, Influence of Bond Coat Surface Roughness on the Structure of Axial Suspension Plasma Spray Thermal Barrier Coatings - Thermal and Lifetime Performance, Surf. Coat. Technol., 268 (2015) 15-23. https://doi.org/10.1016/j.surfcoat.2014.08.067
  19. C. Wan, W. Pan, Q. Xu, Y. Qin, J. Wang, Z. Qu, M. Fang, Effect of Point Defects on the Thermal Transport Properties of $(La_xGd_{1-x})_2Zr_2O_7$: Experiment and Theoretical Model, Phys. Rev. B, 74 (2006) 144109. https://doi.org/10.1103/PhysRevB.74.144109
  20. B. D. Cullity, S. R. Stock, Elements of X-Ray Diffraction, 3rd Ed., Prentice Hall, New Jersey (2001) 388.
  21. D. Michel, R. Collongues, Study by Raman Spectroscopy of Order-Disorder Phenomena Occurring in Some Binary Oxides with Fluorite-Related Structures, J. Raman Spectro., 5 (1976) 163-180. https://doi.org/10.1002/jrs.1250050208
  22. R. Leckie, S. Kramer, M. Ruhle,C. Levi, Thermochemical Compatibility between Alumina and $ZrO_2-GdO_{3/2}$ Thermal Barrier Coatings, Acta Mater., 53 (2005) 3281-3292. https://doi.org/10.1016/j.actamat.2005.03.035
  23. H. Lehmann, D. Pitzer, G. Pracht, R. Vassen,D. Stover, Thermal Conductivity and Thermal Expansion Coefficients of the Lanthanum Rare-Earth-Element Zirconate System, J. Am. Ceram. Soc., 86 (2003) 1338-1344. https://doi.org/10.1111/j.1151-2916.2003.tb03473.x
  24. C. Kittel, P. McEuen, Introduction to Solid State Physics, Wiley New York (1986) 125.