点焊电极表面电火花沉积复合涂层的组织和性能

谢志雄; 李怀君; 黄华; 董仕节

复合材料 | 浏览量 : 0 下载量: 190 CSCD: 5

导出
分享
收藏
专辑

点焊电极表面电火花沉积复合涂层的组织和性能
Microstructure and Properties of Sparking Deposited Composite Coating on Electrode Surface
2007年第4期页码：291-293
纸质出版日期： 2007 ，
DOI：

扫描看全文

[1]谢志雄,李怀君,黄华,董仕节.点焊电极表面电火花沉积复合涂层的组织和性能[J].特种铸造及有色合金,2007(04):291-293+244.

Xie Zhixiong, Li Huaijun, Huang Hua, et al. Microstructure and Properties of Sparking Deposited Composite Coating on Electrode Surface[J]. Special Casting & Nonferrous Alloys, 2007,(4):291-293.
[1]谢志雄,李怀君,黄华,董仕节.点焊电极表面电火花沉积复合涂层的组织和性能[J].特种铸造及有色合金,2007(04):291-293+244. DOI：

Xie Zhixiong, Li Huaijun, Huang Hua, et al. Microstructure and Properties of Sparking Deposited Composite Coating on Electrode Surface[J]. Special Casting & Nonferrous Alloys, 2007,(4):291-293. DOI：

摘要

采用振动电极电火花沉积的方法在点焊电极表面得到合金复合涂层

用XRD、SEM、EDX

显微硬度仪以及焊接试验研究了涂层的显微组织和性能。结果表明

沉积涂层是由TiC、Cu、CuNi2Ti组成的复合涂层;复合涂层形貌的主要特征是表面呈现裂纹以及由于电弧放电引起的飞溅坑;涂层与基体之间是良好的冶金结合;在1N载荷下复合涂层的显微硬度HV高达1144。与无涂层的电极相比

电火花沉积处理的电极寿命提高了1.4倍。

Abstract

The microstructure and mechanical properties of the composite coating deposited on the electrode surface by a vibrating electro-sparking deposited process have been characterized by X-ray diffraction

scanning electron microscope

energy dispersive X-ray analysis

micro-hardness tests and welding experiment. The results show that coating is composed of TiC

Cu and CuNi2Ti

characterized by splashed pit and crack in surface

which exhibits desirable metallurgical bonding between coating and the matrix. The micro-hardness of composite coating reaches 1 144 with 1 N loading. Compared with that of coating free electrode

the service life of ones by electro-sparking deposited composite coating can be increased by 2.4 times.