Properties of vacuum cast CuCr25 and CuCr25Te contact material

The CuCr25 and CuCr25Te contact materials were manufactured by vacuum casting process. The microstructures of two alloys were observed by metallographic microscope, the electrical conductivity, density and hardness were measured. The tensile test was done by universal testing machine while the fract...

Full description

Saved in:
Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2009-09, Vol.19 (z2), p.s444-s447
Main Authors: XIU, Shi-xin, YANG, Ren, XUE, Jun, WANG, Jin-xing
Format: Article
Language:English
Subjects:
Alloys
Breaking
Contact
CuCr contact material
Density
Electric contacts
Microstructure
Tensile tests
vacuum cast
Vacuum casting
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The CuCr25 and CuCr25Te contact materials were manufactured by vacuum casting process. The microstructures of two alloys were observed by metallographic microscope, the electrical conductivity, density and hardness were measured. The tensile test was done by universal testing machine while the fractography was observed by SEM, the breaking current tests were carried out in Weil Synthetic Circuit with arc-igniting branch in Xi'an Jiaotong University. The results show that the microstructures and physical parameters change after adding Te element. The tensile strength decreases and the toughness turns bad, which is propitious to improve the anti-welding property. But the breaking current capacity of CuCr25Te alloy is inferior to CuCr25 alloy. Thus, adding Te element has both advantages and disadvantages on main properties of CuCr contact material.
ISSN:1003-6326
DOI:10.1016/S1003-6326(10)60086-6