Corrosion behaviour of Lotus-type porous high nitrogen nickel-free stainless steels |
| |
| Authors: | Kelly Alvarez Hiroaki Tsuchiya Hideo Nakajima |
| |
| Affiliation: | a The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
b Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan |
| |
| Abstract: | Corrosion behaviour of three austenitic Lotus-type porous high nitrogen Ni-free stainless steels exposed to an acidic chloride solution has been investigated by electrochemical tests and weight loss measurements. Polarization resistance indicates that the corrosion rate of Lotus-type porous high nitrogen Ni-free stainless steels is an order of magnitude lower than that of Lotus-type porous 316L stainless steel in acidic environment. The localised corrosion resistance of the investigated high nitrogen Ni-free stainless steels, measured as pitting potential, Eb, also resulted to be higher than that of type 316L stainless steel. The influences of porous structure, surface finish and nitrogen addition on the corrosion behaviour were discussed. |
| |
| Keywords: | A Nickel-free stainless steels A Lotus-type porous metals B Potentiodynamic polarisation C Pitting corrosion C High temperature nitriding |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
