Effect of in site strain on passivated property of the 316L stainless steels

Lv Jinlong; Liang Tongxiang; Wang Chen; Guo Ting

doi:10.1016/j.msec.2015.12.010

Effect of in site strain on passivated property of the 316L stainless steels

Mater Sci Eng C Mater Biol Appl. 2016 Apr 1:61:32-6. doi: 10.1016/j.msec.2015.12.010. Epub 2015 Dec 8.

Authors

Lv Jinlong¹, Liang Tongxiang², Wang Chen³, Guo Ting³

Affiliations

¹ Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China. Electronic address: ljltsinghua@126.com.
² Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China. Electronic address: txliang@mail.tsinghua.edu.cn.
³ Beijing Key Laboratory of Fine Ceramics, Institute of Nuclear and New Energy Technology, Tsinghua University, Zhongguancun Street, Haidian District, Beijing 100084, China; State Key Lab of New Ceramic and Fine Processing, Tsinghua University, Beijing 100084, China.

PMID: 26838820
DOI: 10.1016/j.msec.2015.12.010

Abstract

The effect of the strain of 316L stainless steel on its corrosion resistance in borate buffer solution was investigated by in site tensile test and the electrochemical impedance spectroscopy measurements. It was found that the corrosion resistance of the 316L stainless steel decreased with the increasing of in site strain. The lower corrosion resistance of the stainless steel during in site strain was mainly attributed to the higher doping concentration in passive film. Especially, with the increasing of in site strain, the concentrations of acceptor (i.e., cation vacancies) in the passive films significantly increased. More acceptor concentrations reduced the compactness of the passive film and its corrosion resistance. Moreover, two exponential relationships were found between in site strain and the charge transfer resistance of the passive film and between in site strain and total doping concentrations in passive film, respectively.

Keywords: EIS; Passive films; Stainless steel; XRD.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Stainless Steel / chemistry*
Stress, Mechanical*

Substances

Stainless Steel