Quantitative inspection of iron contamination on 304 Austenitic stainless steel
The iron contaminated sample of 304 Austenitic stainless steel and a clean sample after chemical passivation was chosen to introduce a new method for quantitative inspection on iron contamination, and the relationship between evaluation results and the character parameter of electrochemical corrosion was analyzed. The result showed that the measured a value from the inspection increased with increasing iron contaminant, while the a* is close to zero for the chemical pas-sived sample. Although the measured a was decreased after the contaminated samples was exposed in air and 3.5 wt.％ NaCl solution, the inspection method can still qualitatively evaluate on the iron contaminant. The a* value has a linear relationship with the corrosion potential and breakdown potential from electrochemical polarization test. It was conformed that the chromogenic quantitative inspection method could adequately evaluate on the iron contamination.
Stainless steel Iron contamination Quantitative inspection Electrochemical corrosion
Congqian Cheng Tieshan Cao Jie Zhao Guanyu Song
School of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, China
国际会议
2011 International Symposium on Structural Integrity 2011国际结构完整性学术研讨会--核工程结构完整性技术 ISSI 2011
合肥
英文
175-179
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）