DocumentCode
1370223
Title
The erosion and arc characteristics of Ag/CdO and Ag/SnO2 contact materials under DC break conditions
Author
Swingler, Jonathan ; McBride, John W.
Author_Institution
Dept. of Mech. Eng. & Electr. Eng., Southampton Univ., UK
Volume
19
Issue
3
fYear
1996
fDate
9/1/1996 12:00:00 AM
Firstpage
404
Lastpage
415
Abstract
Break operation studies have been conducted upon Ag/CdO and Ag/SnO 2 contact materials under dc conditions between 1-16 A. The apparatus used allows contact materials to be continually tested with a controlled break velocity. Results are presented on erosion data in terms of mass transfer. Surface analysis methods are used, scanning electron micrographs reveal distinct structures and areas on the contact surface, and elemental analysis (EDS) shows migration of metal species with current. The metal-oxide used in the contact is shown to influence the arc and erosion characteristics of break only operations. The Ag/CdO contacts exhibit lower erosion than Ag/SnO2 contacts under these controlled conditions
Keywords
arcs (electric); cadmium compounds; circuit-breaking arcs; electrical contacts; silver; tin compounds; wear; 1 to 16 A; Ag-CdO; Ag-SnO2; DC break; EDS; arc; elemental analysis; erosion; mass transfer; scanning electron microscopy; silver/metal-oxide contact material; surface analysis; Anodes; Cathodes; Conducting materials; Contacts; Current supplies; Electrostatics; Gases; Scanning electron microscopy; Surface tension; Temperature;
fLanguage
English
Journal_Title
Components, Packaging, and Manufacturing Technology, Part A, IEEE Transactions on
Publisher
ieee
ISSN
1070-9886
Type
jour
DOI
10.1109/95.536842
Filename
536842
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