The selective oxidation behaviour of WC-Co cemented carbides during crossMark the early oxidation stage

被引：40

作者：

Chen, Liyong ^{[1
]}

Yi, Danqing ^{[1
]}

Wang, Bin ^{[1
]}

Liu, Huiqun ^{[1
]}

Wu, Chunping ^{[1
]}

Huang, Xiang ^{[1
]}

Li, Huihui ^{[1
]}

Gao, Yuehong ^{[2
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[2] Zhuzhou Cemented Carbide CuttingTools Co Ltd, Zhuzhou 412007, Peoples R China

来源：

CORROSION SCIENCE | 2015年 / 94卷

基金：

中国国家自然科学基金;

关键词：

Ceramic matrix composite; Cobalt; Selective oxidation; EPMA; AFM; TUNGSTEN CARBIDE; STRENGTH DEGRADATION; COBALT; ALLOYS; TEMPERATURE; CR; HARD; NI; SPECTROSCOPY; RESISTANCE;

D O I：

10.1016/j.corsci.2015.02.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation experimental of WC-Co cemented carbides was carried out at 500 degrees C in air. Selective oxidation phenomenon of Co phase in WC-Co cemented carbides was observed and proved by EPMA and AFM. At first, the O content in Co phase increases quicldy, and then tends to be stable after oxidation of 20 min. In sharp contrast, no change of O content in WC phase Was observed. Moreover, it was found that the oxide scales thickness of Co phase increased parabolically with oxidation time. And thermodynamic and kinetic analysis of oxidation was done. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1 / 5

页数：5

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