Title :
Arc erosion tests and study of surface of Ag-WC contacts after arc switching operations
Author :
Kaliszuk, K. ; Frydman, K. ; -Grzybek, D. Wójcik ; Bucholc, W. ; Walczuk, E. ; Borkowski, P. ; Zasada, D.
Author_Institution :
Inst. of Electron. Mater. Technol., Warsaw, Poland
Abstract :
This work presents investigation results of surface structures formed on contacts made of Ag-WC composite materials during arc operation on breaking currents 6 kA. The contacts were made using the method of sintering compacts from mixtures of Ag and WC powders. Electrical tests were carried out under standardized conditions. In the paper, the results of SEM investigations are presented for surface structures after arc tests, and the interpretation of phenomena, as a result of which these structures were created.
Keywords :
cermets; contact resistance; electrical contacts; powders; scanning electron microscopy; silver; sintering; surface structure; switching functions; tungsten alloys; Ag powders; Ag-WC; Ag-WC composite materials; Ag-WC contacts; SEM; WC powders; arc erosion tests; arc switching operations; breaking currents; compacts; electrical tests; sintering; surface structures; Circuit testing; Composite materials; Contact resistance; Optical wavelength conversion; Plasma temperature; Powders; Silver; Surface resistance; Surface structures; System testing;
Conference_Titel :
Electrical Contacts, 2004. Proceedings of the 50th IEEE Holm Conference on Electrical Contacts and the 22nd International Conference on Electrical Contacts
Print_ISBN :
0-7803-8460-1
DOI :
10.1109/HOLM.2004.1353098
