The Breakdown of a 316L Stainless Steel Oxide Film in an AlCl3-EMIC Ionic Liquid

被引：1

作者：

Huang, Jiani ^{[1
]}

Pan, Zhehang ^{[1
]}

Jiang, Lun ^{[1
]}

Ling, Guoping ^{[1
]}

机构：

[1] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2019年 / 14卷 / 07期

关键词：

Oxide film; General breakdown; Ionic liquid; Stainless steel; Electrochemical etching; ANODIC BEHAVIOR; CORROSION PROPERTIES; PITTING CORROSION; CHLORIDE; METALS; SURFACE; INITIATION; ALUMINUM; COATINGS; ADHESION;

D O I：

10.20964/2019.07.18

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The breakdown of the oxide film on 316L stainless steel was investigated in an acidic aluminum chloride-1-ethyl-3-methylimidazolium chloride (AlCl3-EMIC) ionic liquid by linear sweep voltammetry, chronoamperometry and the pulse potentiostatic method. Scanning electron microscopy and atomic force microscopy were used to characterize the surface morphology. The results showed that the breakdown of the oxide film depended on the anodic dissolution potential, and the general breakdown occurred when the potential exceeded a critical potential. The general breakdown occurred instantaneously at a large number of positions all over the surface and was followed by a planar dissolution pattern. The oxide film remained on the surface after the general breakdown unless it was removed by stirring. The mechanism of the general breakdown of the oxide film and the subsequent planar dissolution pattern are discussed.

引用

页码：6431 / 6443

页数：13

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