Corrosion Resistance of a High Purity Fe–50 mass% Cr Alloy

✍ Scribed by Yokota, T. ;Satoh, S. ;Kato, Y. ;Abiko, K.

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 309 KB
• Volume: 167
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/(sici)1521-396x(199806)167:2<495::aid-pssa495>3.0.co;2-z

✦ Synopsis

High purity Fe±50 mass% Cr alloys containing C and N in a range of 30 to 500 mass ppm were prepared and their corrosion resistance was investigated. A field exposure test at a coastal area showed that the decrease of the C and N content decreases the number and depth of corrosion pits. The alloys containing CN less than 100 mass ppm did not corrode after 230 cycles of a cyclic corrosion test. The alloy containing 500 mass ppm C and N corroded severely. The relation between the generation and growth of corrosion pits is discussed on the basis of electrochemical corrosion tests.