Switching Properties of Contacts Made of Silver-Tungsten and Silver-Tungsten-Rhenium Composite Materials

Author

Borkowski, P. ; Walczuk, E. ; Frydman, K. ; Wojcik-Grzybek, D.

Author_Institution

Dept. of Electr. Apparatus, Lodz Univ. of Technol., Lodz, Poland

fYear

2013

fDate

22-25 Sept. 2013

Firstpage

1

Lastpage

10

Abstract

There were carried out a research and results´ analysis of switching properties of contacts made of Ag-W and Ag-W-Re consisting of 50% of Ag and 1-4% of Re. Contacts were made using powder metallurgy methods: Press-Sinter-Repress and Press-Sinter-Infiltrate method. Arc erosion tests, measurements of contact resistance change and contacts´ tack welding tests were carried out in model testing conditions. Arc erosion was tested for currents 4 and 6 kA. In all of the cases there was a positive effect on switching properties of the addition of rhenium to the Ag-W composite. Then the final results´ analysis was carried out and, consequently, conclusions were drawn.

Keywords

composite materials; contact resistance; electrical contacts; powder metallurgy; pressing; rhenium alloys; silver alloys; sintering; switches; tungsten alloys; AgW; AgWRe; arc erosion tests; contact resistance change measurements; contact tack welding tests; current 4 kA; current 6 kA; powder metallurgy methods; press-sinter-infiltrate method; press-sinter-repress method; silver-tungsten composite materials; silver-tungsten-rhenium composite materials; switching properties; Contacts; Current measurement; Materials; Powders; Switches; Testing; Tungsten;

fLanguage

English

Publisher

ieee

Conference_Titel

Holm Conference on Electrical Contacts (HOLM) , 2013 IEEE 59th

Conference_Location

Newport, RI

ISSN

1062-6808

Print_ISBN

978-1-4799-1556-9

Type

conf

DOI

10.1109/HOLM.2013.6651430

Filename

6651430