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

THIN SOLID FILMS

卷:558

Article

Fernandez-Domene, R. M.¹  Blasco-Tamarit, E.¹  Garcia-Garcia, D. M.¹  Garcia-Anton, J.¹ 

[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;   

DOI  :  10.1016/j.tsf.2014.03.042

来源: Elsevier

【 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.

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