Patent · US Expired

Process for producing a shaped article from contact material based on silver, contact material and shaped article

US6001149A · kind A · utility

0Cited by

8References

18Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Franz Hauner · Baiersdorf, DE
Gunter Tiefel · Fürth, DE

Key dates

Filing date	Jul 27, 1998
Grant date	Dec 14, 1999
Priority date	—
Expiry date	Jul 27, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2001/02378
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A contact material, a shaped article or contact piece and a process for producing a shaped article from a contact material based on silver, include forming a powder mixture from silver and a metal oxide, and metallurgically processing the powder to form the shaped article with the metal oxide being reduced to metal. Since metal oxide powders are obtainable with a very much smaller particle size than metal powders, it is possible to obtain a contact material with a mean particle size of the metal incorporated as an active component of less than 1 .mu.m. Such a contact material has particularly favorable switching properties as a result of the fine particle size.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.