Influence of breakdown voltages on arc erosion of a Ti3AlC2 cathode in an air atmosphere

被引：27

作者：

Huang, Xiaochen ^{[1
]}

Feng, Yi ^{[1
,2
]}

Qian, Gang ^{[2
]}

Zhang, Jingcheng ^{[2
]}

Zhang, Xuebin ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Anhui, Peoples R China

[2] Hefei Univ Technol, Instrumental Anal Ctr, Hefei 230009, Anhui, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Ti3AlC2; Arc discharge; High-speed camera; Raman spectroscopy; Oxidation; Crystal transformation; MAX PHASES; ELECTRON-IRRADIATION; M(N+1)AX(N) PHASES; OXIDATION BEHAVIOR; TI3SIC2; SURFACE; TI2ALC; WATER;

D O I：

10.1016/j.ceramint.2017.05.018

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of breakdown voltage on arc erosion of Ti3AlC2 has been investigated. After 3-10 kV arc erosion in air, the cathode surface appeared uneven with pits, cracks and ejected particles. The arc columns were recorded by a high speed camera. By increasing the breakdown voltage, the breakdown current and erosion area increase, meanwhile breakdown strength decreases. Experimental results demonstrated that after high-energy arc erosion in air, Ti3AlC2 was oxidized to TiO2 and Al2O3. Remarkably, crystal transformation from anatase to TiO2 rutile occurred for breakdown voltage higher than 3 kV, the transformation process being completed for breakdown voltage 9 and 10 kV.

引用

页码：10601 / 10605

页数：5

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