- 자동차 배기계 플랜지용 16~19 wt.% 페라이트 주조용 스테인리스강 개발
- ㆍ 저자명
- 장희진,범원진,박찬진,Jang. Hee-Jin,Beom. Won-Jin,Park. Chan-Jin
- ㆍ 간행물명
- 한국표면공학회지
- ㆍ 권/호정보
- 2009년|42권 2호|pp.79-85 (7 pages)
- ㆍ 발행정보
- 한국표면공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
We aimed to develop a Fe-($16{sim}19$)Cr-($0.1{sim}0.6$)Ti-($0.1{sim}0.6$)Nb stainless steel for automotive exhaust parts with high corrosion resistance. The alloys with high Cr content showed high resistance to general corrosion and also localized corrosion. The increase of Ti and Nb contents resulted in a linear increase in the general corrosion resistance, while the pitting potential was improved by addition of these elements up to about 0.4 wt.%. The low-carbon Fe-17Cr-0.4Ti-0.4Nb alloy annealed at $850^{circ}C$ and air-cooled was considered to be the optimum alloy for our purpose with the critical anodic current density of $247{mu}A/cm^2$ in 0.05 M $H_2SO_4$ solution and the pitting potential of 310 mVSCE in 0.2 M NaCl solution.