摘要
用电化学测量技术 ,对含F-和Cl-稀醋酸介质中 316不锈钢的腐蚀行为进行了研究 .结果表明 ,316不锈钢在低浓度F-/Cl-稀醋酸溶液中能够钝化 ,致密钝化膜为双层结构 ;F-能加速其均匀腐蚀 ,但加速作用不显著 。
The corrosion behavior of 316 stainless steel (316SS) in dilute acetic acid solutions containing fluoride/chloride ions was investigated by using electrochemical measurement techniques.It was found that 316 could be passivated in 0.1 mol/L HAc solution mixed with 0.001 mol/L NaF and 0.001mol/L NaCl or with 0～0.1 mol/L NaF.The well passivated films had an internal chromium oxide rich layer and an external iron oxide rich layer.The results revealed that F - could increase corrosion rate slightly for 316SS in 0.1 mol/L HAc solution.No pitting corrosion occurred in the various tested solutions.The corrosion rate of 316SS increased with increasing the temperature of solutions containing F -/Cl - ions,but 316SS was still in the passive state at 80℃.
出处
《中国腐蚀与防护学报》
CAS
CSCD
2002年第3期162-166,共5页
Journal of Chinese Society For Corrosion and Protection
基金
国家重点基础研究项目 (G2 0 0 0 0 2 64 0 9)
