Paper Title:
Vacuum Arc Motion Characteristics on CuWCr Composites
  Abstract

The CuWCr composites were respectively fabricated by the mixture of W and Cr and WCr alloyed powders, followed by sintering and infiltration. Vacuum arcs on CuWCr composites were observed by a digital high-speed video camera. The morphologies of the composites before and after arc erosion were characterized by a scanning electron microscope. The results show that the microstructure CuWCr composites prepared by WCr alloyed powders becomes finer and more uniform, and, thus, has good characteristics of diffusive arcs and arc erosion resistance. In addition, the composite prepared by WCr alloyed powders has excellent electrical properties such as high breakdown voltage, low chopping current and long arc life. Arc erosion zones of the CuWCr composite fabricated by WCr alloyed powders become more dispersive and uniform on the surfaces with some shallow erosion pits. During the course of arc evolution, the dispersed arcs are caused by the split of electrical arc.

  Info
Periodical
Chapter
Chapter 2: Materials Science in Computer-Aided Manufacturing and Design
Edited by
Wensong Hu
Pages
161-165
DOI
10.4028/www.scientific.net/AMR.346.161
Citation
P. Xiao, J. R. Liu, X. H. Wang, S. H. Liang, H. Y. Liu, "Vacuum Arc Motion Characteristics on CuWCr Composites", Advanced Materials Research, Vol. 346, pp. 161-165, 2012
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jian Bin Zhang, Ding Fan, Jing Jie Dai, Yao Ning Sun
Abstract:Laser surface alloying is an attractive processing to improve surface hardness, wear and corrosion resistance. In this paper, a continuous...
1148
Authors: Chih Feng Hsu, Pee Yew Lee
Abstract:The preparation of Ti50Cu28Ni15Sn7 metallic glass composite powders was accomplished by the mechanical alloying of a pure Ti, Cu, Ni, Sn and...
865
Authors: Zhao Ming Liu, Gao Feng Quan, Ying Bo Zhang
Chapter 2: Surface Engineering/Coatings
Abstract:A new technique has been developed by infiltration during casting process to AZ91D magnesium alloy part. Through a melting process a alloyed...
818
Authors: Yu Gao Liu
Chapter 1: Surface Engineering/Coatings
Abstract:This paper represents a summary of experimental results dealing with the time dependence of surface diffusion alloyed microstructure and its...
161
Authors: Feng Zhang, Ze Ying Wang, Zhen Xia Wang, Zhi Yong He
Abstract:Plasma surface alloying technology was applied to introduce Ni element into Ti6Al4V to improve its tribological property. The microstructure,...
204