DocumentCode
3524510
Title
Press-sinter-repress Ag-SnO2 contacts with lithium and copper sintering additives for contactor applications
Author
Streicher, Eric ; Leung, Chi ; Bevington, Richard ; Allen, Sam
Author_Institution
AMI DODUCO, Export, PA, USA
fYear
2001
fDate
2001
Firstpage
27
Lastpage
34
Abstract
Ag-SnO2 contacts have been made by extrusion for several years because it is easier to achieve high density by this method. However, the brittle nature of this material, especially with 12% or more oxides, resulted in high manufacturing cost. This paper discusses a patented material that uses sintering aids and special silver morphology to assist sintering to high densities. By this method, discrete contacts can be made by powder metal mixing, pressing, sintering and repressing to high densities. Electrical performance similar to extruded materials was obtained. Electrical test results including life testing at 90 A 240 VAC and weld strength comparisons are reported. The erosion process is discussed
Keywords
contactors; copper; hot pressing; life testing; lithium; powder technology; silver; sintering; tin compounds; wear; 240 V; 90 A; Ag-SnO2; Ag-SnO2 contacts; Cu; Li; brittle material; contact density; contactor applications; copper sintering additive; discrete contacts; electrical performance; electrical test; erosion process; extruded materials; extrusion; life testing; lithium sintering additive; manufacturing cost; oxide content; powder metal mixing; press-sinter-repress Ag-SnO2 contacts; pressing; repressing; silver morphology; sintering; sintering aids; weld strength; Additives; Ambient intelligence; Contacts; Copper; Costs; Lithium; Manufacturing; Powders; Silver; Tin;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Contacts, 2001. Proceedings of the Forty-Seventh IEEE Holm Conference on
Conference_Location
Montreal, Que.
Print_ISBN
0-7803-6667-0
Type
conf
DOI
10.1109/HOLM.2001.953186
Filename
953186
Link To Document