The influence of surface treatments in hot acid solutions on the corrosion resistance and oxide structure of stainless steels

被引：20
作者：
Taveira, LV
Frank, G
Strunk, HP
Dick, LFP
机构：
[1] Univ Fed Rio Grande Sul, Dept Met, BR-90035190 Porto Alegre, RS, Brazil
[2] Univ Erlangen Nurnberg, Inst Microcharacterizat, D-91058 Erlangen, Germany
来源：
CORROSION SCIENCE | 2005年 / 47卷 / 03期
关键词：
stainless steels; surface treatments; anodization; TEM; pitting corrosion;
D O I：
10.1016/j.corsci.2004.07.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of anodic treatments on the corrosion resistance in Cl--solutions and the structure of oxide layers on alloy AISI304 was investigated. Oxides were analysed using RBS, SEM and TEM. The highest pitting potential shifts (790 mV) are obtained by anodizing at high temperature (95 degreesC) within the passive range in acid baths. Using this method it was possible to grow oxides layers up to 400 nm, that are constituted of porous nanocrystalline spinet. Mo and Nb are incorporated into the oxide layer but have no benefit on the improvement of corrosion resistance, which is explained by greater thickness and Cr-enrichment of the oxide layer. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：757 / 769
页数：13
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