The effect of residual stress on the electrochemical corrosion behavior of Fe-based amorphous coatings in chloride-containing solutions

被引：62
|
作者：
Wang, Y. [1 ,2 ]
Li, K. Y. [2 ]
Scenini, F. [3 ]
Jiao, J. [1 ]
Qu, S. J. [1 ]
Luo, Q. [1 ]
Shen, J. [1 ]
机构：
[1] Tongji Univ, Sch Mat Sci & Engn, 4800 Caoan Rd, Shanghai 201084, Peoples R China
[2] Northeast Petr Univ, Sch Mech Sci & Engn, 199 Fazhan Rd, Daqing 163318, Peoples R China
[3] Univ Manchester, Mat Performance Ctr, Oxford Rd, Manchester M13 9PL, Lancs, England
来源：
SURFACE & COATINGS TECHNOLOGY | 2016年 / 302卷
基金：
中国博士后科学基金; 美国国家科学基金会;
关键词：
Metal coatings; Polarization; XPS; Amorphous structures; Residual stress; Passivity; THERMAL SPRAY COATINGS; PASSIVE FILMS; METALLIC COATINGS; SHARP INDENTATION; EROSION-CORROSION; STAINLESS-STEELS; HVOF; GROWTH; IRON; MICROSTRUCTURE;
D O I：
10.1016/j.surfcoat.2016.05.034
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The electrochemical corrosion and passive behavior of activated combustion high-velocity air fuel FeCrMoMnWBCSi amorphous metallic coatings (AMCs) under different geometries that produced a variable tensile residual stresses were investigated in chloride-containing solutions by using electrochemical measurements and X-ray photoelectron spectroscopy. The tensile residual stresses of AMCs were determined by the mechanical method of sharp indentation testing. A systematic detrimental effect of tensile residual stress on passive current density and localized corrosion was found. The detrimental effect of residual stress was aggravated at higher temperatures and acidity. The implication of high donor density on the passive film stability, derived from Mott-Schottky analysis, is also discussed. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：27 / 38
页数：12
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