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
1. 서 론
2. 실험방법
3. 결과 및 토론
4. 결 론
References

• 황철홍(한밭대학교 신소재공학과) | Cheol Hong Hwang (Department of Materials Science and Engineering, Hanbat National University)
• 이효민(한밭대학교 신소재공학과) | Hyo Min Lee (Department of Materials Science and Engineering, Hanbat National University)
• 오정석(한밭대학교 신소재공학과) | Jeong Seok Oh (Department of Materials Science and Engineering, Hanbat National University)
• 황동현(한밭대학교 신소재공학과) | Dong Hyeon Hwang (Department of Materials Science and Engineering, Hanbat National University)
• 황유석(한밭대학교 신소재공학과) | Yu Seok Hwang (Department of Materials Science and Engineering, Hanbat National University)
• 이종원(한밭대학교 신소재공학과) | Jong Won Lee (Department of Materials Science and Engineering, Hanbat National University)
• 최정묵(㈜ 진합) | Jeong Mook Choi (Jinhap Corp.)
• 박준식(한밭대학교 신소재공학과) | Joon Sik Park (Department of Materials Science and Engineering, Hanbat National University) Corresponding Author