Sintered electrical contacts for vacuum current interruption

Author

Lungu, P. ; Enescu, E. ; Lungu, M. ; Pavelescu, D. ; Dumitrescu, Gh ; Anghelita, P.

Author_Institution

INCDIE ICPE-CA, Bucharest

Volume

1

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

255

Lastpage

258

Abstract

The paper presents the experiments of elaboration copper-chromium electrical contacts, with 40-75 % copper content, manufactured by powder metallurgy techniques: infiltration with copper of a chromium frame and solid state sintering of chromium and copper powder mixture. The influence of technological parameters - powder granulometry, compacting pressure, sintering and infiltration temperature - on the physical (density, hardness) and microstructural characteristics of contacts are presented. The elaborated contacts were tested in order to determine their properties in the case of high currents interruption.

Keywords

chromium alloys; copper alloys; electrical contacts; powder metallurgy; sintering; vacuum interrupters; chromium frame; compacting pressure; copper-chromium electrical contacts; powder granulometry; powder metallurgy techniques:; sintered electrical contacts; solid state sintering; vacuum current interruption; Chromium; Contacts; Copper; Furnaces; Grain size; Manufacturing; Powders; Pressing; Solid state circuits; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2008. ISDEIV 2008. 23rd International Symposium on

Conference_Location

Bucharest

ISSN

1093-2941

Print_ISBN

978-973-755-382-9

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2008.4676768

Filename

4676768