Effect of alloying elements on the electronic properties of thin passive films formed on carbon steel, ferritic and austenitic stainless steels in a highly concentrated LiBr solution

被引:61
作者
Fernandez-Domene, R. M. [1 ]
Blasco-Tamarit, E. [1 ]
Garcia-Garcia, D. M. [1 ]
Garcia-Anton, J. [1 ]
机构
[1] Univ Politecn Valencia, ETSI Ind, Dept Ingn Quim & Nucl, Valencia 46022, Spain
关键词
Carbon steel; Stainless steel; Thin passive films; Semiconducting properties; Mott-Schottky; POINT-DEFECT MODEL; ELECTROCHEMICAL-BEHAVIOR; SEMICONDUCTIVE BEHAVIOR; CORROSION-RESISTANCE; CHEMICAL-COMPOSITION; AISI; 316; TEMPERATURE; CHLORIDE; CR; FE;
D O I
10.1016/j.tsf.2014.03.042
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The influence of alloying elements on the electrochemical and semiconducting properties of thin passive films formed on several steels (carbon steel, ferritic and austenitic stainless steels) has been studied in a highly concentrated lithium bromide (LiBr) solution at 25 degrees C, by means of potentiodynamic tests and Mott-Schottky analysis. The addition of Cr to carbon steel promoted the formation of a p-type semiconducting region in the passive film. A high Ni content modified the electronic behaviour of highly alloyed austenitic stainless steels. Mo did not modify the electronic structure of the passive films, but reduced the concentration of defects. (C) 2014 Elsevier B. V. All rights reserved.
引用
收藏
页码:252 / 258
页数:7
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