摘要
奥氏体不锈钢自发钝化膜非常薄,在一些特定的阴离子环境中容易发生腐蚀而破坏,而且不锈钢仅有金属光泽,颜色过于单调.采用再钝化实验工艺使金属表层生成一层化学转化膜,不仅能提高不锈钢的耐腐蚀性能,还能利用对光的干涉作用使金属表面呈现不同的色彩.本文利用酸性化学着色,把经过再钝化的试样和未经过再钝化的试样浸入FeCl3溶液中进行腐蚀试验,全面腐蚀和点蚀结果均表明,经过再钝化的试样的耐腐蚀性能明显高于未经过再钝化的试样.该工艺具有较好的实用价值.
The spontaneous passivation film of austenitic stainless steel is very thin,and it is easily destroyed by corrosion in anionic environment.The passivation film makes stainless steel only have dull metallic luster and metallic color.A thin sheet of chemical film can be formed on the surface of metals by repassivation technology,it can not only improve the corrosion resistance of stainless steel but also make the surface of stainless steel present different colors by light interference.Some test pieces are passivated by acidic chemical coloring,and the corrosion tests of the passivated test pieces and original test pieces are carried in FeCl_3 solution.The experimental results of overall corrosion and spot corrosion all show that the corrosion resistance of the passivated test pieces are better than that of the original test pieces.The metal passivation technology is green,economic and practical,and therefore it has good prospects of application.
出处
《西安石油大学学报（自然科学版）》
CAS
2006年第5期79-81,共3页
Journal of Xi’an Shiyou University（Natural Science Edition）
关键词
奥氏体不锈钢
自发钝化
人工钝化
腐蚀试验
austenitic stainless steel
spontaneous passivation
artificial passivation
corrosion test
