플라즈마용사로 증착된 환경차폐코팅 이터븀 실리케이트의 Ar/He 가스 조성에 따른 상형성 및 미세구조 특성
Phase formation and microstructural characteristics of ytterbium silicates coatings fabricated by plasma spraying with Ar/He gas compositions for environmental barrier coating applications
3
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Yb2Si2O7 has a coefficient of thermal expansion similar to that of the base material of SiC and has excellent corrosion resistance in a high-temperature oxidizing atmosphere including water vapor, so it is being studied as one of the materials for environmental barrier coatings (EBCs). In this study, Yb2Si2O7 powder granule is deposited using atmospheric plasma spraying (APS) with different Ar/He ratios. Phase formation and microstructural characteristics are investigated with the coated specimens. In the coating layer, the crystallinity decreased, and the amorphous content increased from an increase in the ratio of Ar. In addition, the various types of particles involved by local volatilization of Si according to the Ar/He ratios were identified.
Abstract
Yb2Si2O7 has a coefficient of thermal expansion similar to that of the base material of SiC and has excellent corrosion resistance in a high-temperature oxidizing atmosphere including water vapor, so it is being studied as one of the materials for environmental barrier coatings (EBCs). In this study, Yb2Si2O7 powder granule is deposited using atmospheric plasma spraying (APS) with different Ar/He ratios. Phase formation and microstructural characteristics are investigated with the coated specimens. In the coating layer, the crystallinity decreased, and the amorphous content increased from an increase in the ratio of Ar. In addition, the various types of particles involved by local volatilization of Si according to the Ar/He ratios were identified.
참고문헌 (22)
- E. J. Opila, "SiC recession caused by SiO2 scale volatility under combustion conditions: II, thermodynamics and gaseousdiffusion model,", J. Am. Ceram. Soc, 82, pp.1826~1834 (1999)
- K. N. Lee, "Environmental barrier coatings for CMCs, ceramic matrix composites", pp.430~ (2015), Wiley
- Y. Xu, "Rare earth silicate environmental barrier coatings : present status and prospective", Ceram. Int, 43, pp.5847~5855 (2017)
- 최재형, "환경차폐코팅용 이터븀 실리케이트의 제조와 물성평가", 한국표면공학회지, 54(6), pp.331~339 (2021), 한국표면공학회
- D. T. Martin, "A review on environmental barrier coatings:history, current state of the art", J. Euro. Ceram. Soc, 41, pp.1747~1768 (2021)
- E. Bakan, "Yb2Si2O7environmental barrier coatings deposited by various thermal spray techniques : A preliminary comparative study", J. Therm. Spray. Tech, 26, pp.1011~1024 (2017)
- R. Vaßen, "Environmental barrier coatings made by different thermal spray technologies", Coatings, 9, pp.784~ (2019)
- E. H. Jordan, "The solution precursor plasma spray(SPPS)process : A review with Energy considerations", J. Therm. Spray Technol, 24(7), pp.1153~1165 (2015)
- A. Keyvani, "Effect of sintering rate on the porous microstructural, mechanical and thermomechanical properties of YSZ and CSZ TBC coatings undergoing thermal cycling", J. Alloys and Compd, 727, pp.1057~1066 (2017)
- 권창섭, "서스펜션 플라즈마 용사로 제조된 란타눔", 가돌리늄 지르코네이트 열차폐코팅의 구조와 열전도도 특성, 2014, pp.47(6), 316~322[DOI]
- 권창섭, "서스펜션 플라즈마 용사법을 이용한 La2Zr2O7", YSZ 2층세라믹 열차폐코팅의 제조와 특성평가, 2015, pp.48(6), 315~321[DOI]
- 이소율, "서스펜션의 준비방법에 따른 서스펜션 플라즈마 용사를 이용한 La2O3-Gd2O3-ZrO2 계 열차폐코팅의 제조와 특성", 한국표면공학회지, 49(6), pp.595~603 (2016), 한국표면공학회[DOI]
- K. N. Lee, "New generation of plasma-sprayed mullite coatings on silicon carbide", J. Am. Ceram. Soc, 78, pp.705~710 (1995)
- C. M. Weyant, "Processingmicrostructure relationships for plasmasprayed yttrium aluminum garnet", Surf. Coat. Technol, 202, pp.6081~6089 (2008)
- A. Feuerstein, "Technical and economical aspects of current thermal barrier coating systems for gas turbine engines by thermal spray and EBPVD : a review", J. Therm. Spray Technol, 17, pp.199~213 (2008)
- R. S. Lima, "Environmental, economical, and performance impacts of Ar-H2 and N2-H2 plasma-sprayed YSZ TBCs", J. Therm. Spray Technol, 29, pp.74~89 (2020)
- A. Dolmaire, "Benefits of hydrogen in a segmented-anode plasma torch in suspension plasma spraying", J. Therm. Spray Technol, 30, pp.236~250 (2021)
- G. Mauer, "Preliminary study on the TriplexProTM-200 gun for atmospheric plasma spraying of yttriastabilized zirconia", Surf. Coat. Technol, 202, pp.4374~4381 (2008)
- K. N. Lee, "New generation of plasma-sprayed mullite coatings on silicon carbide", J. Am. Ceram. Soc, 78, pp.705~710 (1995)
- E. Garcia, "Phase and microstructure evolution in plasma sprayed Yb2Si2O7 coatings", J. Euro. Ceram. Soc, 39, pp.1477~1486 (2019)
- K. N. Lee, "Perspectives on environmental barrier coatings(EBCs)manufactured via air plasma spray(APS)on ceramic matrix composites(CMCs) : a tutorial paper", J. Therm. Spray Technol, 30, pp.40~58 (2021)
- V. Guipont, "High-pressure plasma spraying of hydroxyapatite powders", Mater. Sci. Eng. A, 325, pp.9~18 (2002)