X-RAY PHOTOELECTRON SPECTROSCOPIC STUDY OF THE PASSIVITY OF FERRITIC 19CR STAINLESS-STEELS IN 1-NHCL

被引：79
作者：
HASHIMOTO, K
ASAMI, K
机构：
[1] Research Institute for Iron, Steel and Other Metals, Tohoku University, Sendai
来源：
CORROSION SCIENCE | 1979年 / 19卷 / 04期
关键词：
D O I：
10.1016/0010-938X(79)90010-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The composition of surface films formed on 19Cr and 19Cr-2Mo ferritic stainless steels in 1N HCl has been analyzed by X-ray photo-electron spectroscopy. The composition of the passive films on both steels is essentially the same. Passivation takes place by the formation of a hydrated chromium oxy-hydroxide It has been suggested that, in general, the passive film is not uniform but contains micro-pores which are repeatedly formed and repassivated. The roles of chromium and molybdenum in increasing the corrosion resistance have been illustrated in terms of the activity and repassivation of micro-pores The origin of the micro-pores has also been suggested. © 1979.
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页码：251 / 260
页数：10
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