알루미나이드 확산코팅된 스테인레스 합금의 내산화 및 내삭마 특성
Oxidation Behaviors and Degradation Properties of Aluminide Coated Stainless Steel at High Temperature
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Stainless steel, a type of steel used for high-temperature parts, may cause damage when exposed to high temperatures, requiring additional coatings. In particular, the Cr2O3 product layer is unstable at 1000oC and higher temperatures; therefore, it is necessary to improve the oxidation resistance. In this study, an aluminide (Fe2Al5 and FeAl3) coating layer was formed on the surface of STS 630 specimens through Al diffusion coatings from 500oC to 700oC for up to 25 h. Because the coating layers of Fe2Al5 and FeAl3 could not withstand temperatures above 1200oC, an Al2O3 coating layer is deposited on the surface through static oxidation treatment at 500oC for 10 h. To confirm the ablation resistance of the resulting coating layer, dynamic flame exposure tests were conducted at 1350oC for 5–15 min. Excellent oxidation resistance is observed in the coated base material beneath the aluminide layer. The conditions of the flame tests and coating are discussed in terms of microstructural variations.
Abstract
Stainless steel, a type of steel used for high-temperature parts, may cause damage when exposed to high temperatures, requiring additional coatings. In particular, the Cr2O3 product layer is unstable at 1000oC and higher temperatures; therefore, it is necessary to improve the oxidation resistance. In this study, an aluminide (Fe2Al5 and FeAl3) coating layer was formed on the surface of STS 630 specimens through Al diffusion coatings from 500oC to 700oC for up to 25 h. Because the coating layers of Fe2Al5 and FeAl3 could not withstand temperatures above 1200oC, an Al2O3 coating layer is deposited on the surface through static oxidation treatment at 500oC for 10 h. To confirm the ablation resistance of the resulting coating layer, dynamic flame exposure tests were conducted at 1350oC for 5–15 min. Excellent oxidation resistance is observed in the coated base material beneath the aluminide layer. The conditions of the flame tests and coating are discussed in terms of microstructural variations.
참고문헌 (19)
- C. C. Shin, , Corros. Sci, 46, pp.427~ (2004)
- S. G. Wang, , Corros. Sci, 72, pp.64~ (2013)
- S. Benafia, , Corros. Sci, 136, pp.188~ (2019)
- 최광수, "β", B2상을 포함한 Ti-Al-Mo-Nb 합금의 산화 거동과 실리콘 화합물 코팅을 통한 내산화성 개선, 2019, pp.57(3), 131~137[DOI]
- X. Xu, , Mater. Lett, 65, pp.3285~ (2011)
- K. Choi, , Korean J Met. Mater, 28, pp.3~ (2018)
- W. C. Yang, "Ablation Stability of In Situ Al2O3 Layer in Aluminized AISI 4130 Steels under High-Temperature Plasma Flame Environments", Journal of Materials Engineering and Performance, 30(10), pp.7488~7493 (2021), Springer Science and Business Media LLC[DOI]
- D. G. Liu, , Vacuum, 185, pp.110032~ (2021)
- K. Deshmikh, , Int. J. Adhes. Adhes, 75, pp.139~ (2017)
- C. Künzel, , Mater. Des, 196, pp.109087~ (2020)
- M. Jacobs, , Open Ceramics, 6, pp.100121~ (2021)
- Q. You, , Int. J. Refract. Met. Hard Mater, 98, pp.105554~ (2021)
- L. Li, , J. Colloid Interface Sci, 583, pp.188~ (2021)
- J. J. Wu, , Surf. Coat. Technol, 422, pp.127495~ (2021)
- W. Yang, , Korean J. Met. Mater, 27, pp.914~ (2021)
- K. Choi, , Appl. Surf. Sci, 489, pp.668~ (2019)
- 김민석, "알루미늄 저온 확산코팅의 속도론적 고찰 및 확산코팅법으로 알루미나이드 코팅 및 전처리 산화된 Haynes230 합금의 내삭마특성", 대한금속·재료학회지, 53(10), pp.711~720 (2015), 대한금속·재료학회[DOI]
- 박진수, "알루미늄 기지에 알루미늄-알루미나 혼합분말을 이용한 고온플라즈마 열분사 코팅층의 밀착강도 향상기구", 한국재료학회지, 25(5), pp.226~232 (2015), 한국재료학회
- H. Sina, , J. Alloys Compd, 636, pp.261~ (2015)