Critical temperatures of contact materials

Author

Ding, Bingjun ; Li, Hongqun ; Wang, Xiaotian ; Wang, Jimei

Author_Institution

Dept. of Mater. Sci. & Eng., Xi´´an Jiaotong Univ., China

Volume

15

Issue

1

fYear

1992

fDate

2/1/1992 12:00:00 AM

Firstpage

118

Lastpage

120

Abstract

The influence of cathode temperatures on the dielectric strength of contact materials is investigated in the temperature region between 300 and 1600 K. Experimental results show that contact materials investigated in this paper have certain critical temperatures. Below the critical temperatures, the dielectric strengths of the materials are equal to or greater than those at room temperature; but above the critical temperatures, the dielectric strengths decrease rapidly. The critical temperatures for CuSe and CuCr are about 1200 and 1300 K, respectively. The critical temperature for Cu is also 1200 K. The influence of temperature on dielectric strength is discussed

Keywords

chromium alloys; circuit breakers; copper; copper alloys; electric breakdown; electric strength; electrical contacts; selenium alloys; vacuum insulation; 300 to 1600 K; Cu; CuCr; CuCr alloys; CuSe; CuSe alloys; cathode temperatures; contact materials; critical temperatures; dielectric strength; temperature region; vacuum interrupters; Anodes; Breakdown voltage; Cathodes; Dielectric breakdown; Dielectric materials; Dielectric measurements; Electric breakdown; Electrodes; Interrupters; Temperature measurement;

fLanguage

English

Journal_Title

Components, Hybrids, and Manufacturing Technology, IEEE Transactions on

Publisher

ieee

ISSN

0148-6411

Type

jour

DOI

10.1109/33.124201

Filename

124201