Comparison of the switching behavior of silver metal oxide contact materials

Author

Mcdonnell, Donald ; Gardener, Jeffrey ; Gondusky, Joseph

Author_Institution

Texas Instrum. Inc., Attleboro, MA, USA

fYear

1993

fDate

27-29 Sep 1993

Firstpage

37

Lastpage

43

Abstract

An investigation of the switching behavior of internally oxidized silver cadmium oxide and silver tin, indium oxide contact materials was undertaken in which detailed, computer supported analysis of changes in the performance (contact weld force, electrical resistance and temperature change) was evaluated. In addition, the impact of electrical switching on the physical characteristics of the material (contact erosion and surface morphology) was examined. The silver tin, indium oxide materials exhibited significantly higher resistance to erosion than the silver cadmium oxide materials. The resistance to welding as well as changes to electrical resistance and temperature were comparable and were more dependent on oxide level than on materials. The results suggest that internally oxidized silver tin, indium oxide could serve as a nontoxic replacement for internally oxidized silver cadmium oxide

Keywords

contact resistance; electrical contacts; silver; Ag-CdO; Ag-SnO₂-In₂O₃; computer analysis; electrical resistance; electrical switching; erosion; internal oxidation; nontoxic material; silver metal oxide contact materials; surface morphology; temperature change; weld force; Cadmium compounds; Contacts; Electric resistance; Indium; Performance analysis; Silver; Surface morphology; Temperature; Tin; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Contacts, 1993., Proceedings of the Thirty-Ninth IEEE Holm Conference on

Conference_Location

Pittsburgh, PA

Print_ISBN

0-7803-1270-8

Type

conf

DOI

10.1109/HOLM.1993.489658

Filename

489658