Investigation on arc erosion behaviors and mechanism of W70Cu30 electrical contact materials adding graphene

被引:84
作者
Dong, Longlong [1 ]
Chen, Wenge [1 ]
Deng, Nan [1 ]
Song, Jiulong [1 ]
Wang, Jiaojiao [1 ]
机构
[1] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China
关键词
Graphene; WCu alloys; Arc breakdown; Work function; ELECTRODE MATERIALS; COMPOSITE; CATHODE; MICROSTRUCTURE; NANOCOMPOSITE; FABRICATION; MICROWAVE;
D O I
10.1016/j.jallcom.2016.12.044
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this work, graphene was chosen to add into W70Cu30 alloys to develop properties of arc erosion. The effect of graphene addition on arc ablation behavior of W70Cu30 contacts was investigated by the measurement of weight-loss and the vacuum electrical breakdown tests. Also, the surface morphology of W70Cu30 contacts was analyzed by using scanning electron microscopy (SEM) after arc breakdown the first and 100 times. The results reveal that addition of graphene can enhance the breakdown strength a lot, which reach up to similar to 45.5%, with a maximum value of 8.5 x 10(6) V/m. Compared with W70Cu30 alloys without any additives, the surface morphology of W70Cu30 alloys with graphene addition have a slight splash of molten copper and a small, flat cathode craters, thus, avoiding the concentration erosion on the surface of contacts. The main ablation mechanisms of W70Cu30 alloys with graphene addition was considered to be electron transition, energy consumption and difference work function of W, Cu, graphene, respectively. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:923 / 930
页数:8
相关论文
共 50 条
[1]   Superior thermal conductivity of single-layer graphene [J].
Balandin, Alexander A. ;
Ghosh, Suchismita ;
Bao, Wenzhong ;
Calizo, Irene ;
Teweldebrhan, Desalegne ;
Miao, Feng ;
Lau, Chun Ning .
NANO LETTERS, 2008, 8 (03) :902-907
[2]   Effect of Fe on vacuum breakdown properties of CuW alloys [J].
Cao Weichan ;
Liang Shuhua ;
Gao Zhuangfeng ;
Wang Xianhui ;
Yang Xiaohong .
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 2011, 29 (06) :656-661
[3]   Effect of Mo addition on microstructure and vacuum arc characteristics of CuCr50 alloy [J].
Cao Weichan ;
Liang Shuhua ;
Zhang Xiao ;
Wang Xianhui ;
Yang Xiaohong .
VACUUM, 2011, 85 (10) :943-948
[4]  
[曹伟产 Cao Weichan], 2010, [材料工程, Journal of Materials Engineering], P49
[5]  
Chen Juan, 2015, Chinese Journal of Nonferrous Metals, V25, P3147
[6]   Novel nanoprocessing route for bulk graphene nanoplatelets reinforced metal matrix nanocomposites [J].
Chen, Lian-Yi ;
Konishi, Hiromi ;
Fehrenbacher, Axel ;
Ma, Chao ;
Xu, Jia-Quan ;
Choi, Hongseok ;
Xu, Hui-Fang ;
Pfefferkorn, Frank E. ;
Li, Xiao-Chun .
SCRIPTA MATERIALIA, 2012, 67 (01) :29-32
[7]  
Chen Mianzhi, 2008, Special Casting & Nonferrous Alloys, V28, P570
[8]   Arc erosion behavior of a nanocomposite W-Cu electrical contact material [J].
Chen, W ;
Kang, ZY ;
Shen, HF ;
Ding, BJ .
RARE METALS, 2006, 25 (01) :37-42
[9]   Investigation and analysis of arc ablation on WCu electrical contact materials [J].
Chen, Wenge ;
Dong, Longlong ;
Zhang, Zhijun ;
Gao, Hongmei .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2016, 27 (06) :5584-5591
[10]  
[陈文革 Chen Wenge], 2003, [粉末冶金技术, Powder Metallurgy Technology], V21, P224