EP 0311134 B1 19920624 - POWDER-METALLURGICALLY PRODUCED ELECTRICAL CONTACT MATERIAL COMPRISING SILVER AND GRAPHITE, AND PROCESS FOR PRODUCING IT
Title (en)
POWDER-METALLURGICALLY PRODUCED ELECTRICAL CONTACT MATERIAL COMPRISING SILVER AND GRAPHITE, AND PROCESS FOR PRODUCING IT
Publication
Application
Priority
DE 3734178 A 19871009
Abstract (en)
[origin: EP0311134A1] The powder-metallurgically produced material for electric contacts of silver with 2 to 7 % by weight of graphite contains, for increasing the strength, an addition of 0.5 to 50 % by weight of one or more base metals which are present in the material as uniformly distributed particles of a maximum size of 5 x 10<-><1><0> mm<3>. Preferably, such a material is produced from an alloy powder which contains the silver and the base metal(s) in the form of a precipitation alloy produced by spray pyrolysis.
IPC 1-7
B22F 3/16; B22F 9/30; C22C 1/04; C22C 1/10; C22C 5/06; C22C 5/08; C22C 30/00; H01H 1/02
IPC 8 full level
B22F 3/16 (2006.01); B22F 9/30 (2006.01); C22C 1/04 (2006.01); C22C 1/10 (2006.01); C22C 5/06 (2006.01); C22C 5/08 (2006.01); C22C 30/00 (2006.01); C22C 32/00 (2006.01); H01H 1/02 (2006.01); H01H 1/023 (2006.01); H01H 1/025 (2006.01); H01H 1/027 (2006.01)
CPC (source: EP)
B22F 9/30 (2013.01); C22C 5/06 (2013.01); C22C 32/0084 (2013.01); H01H 1/023 (2013.01); H01H 1/027 (2013.01)
Citation (examination)
METAL HANDBOOK, Ninth Edition, Vol. 3, Dezember 1980, Metals Park, Ohio - W.H. Cubberly et al. "Electric-Contact Materials" Seiten 662, 672-681
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI
DOCDB simple family (publication)
EP 0311134 A1 19890412; EP 0311134 B1 19920624; AT E77657 T1 19920715; DD 275421 A5 19900124; DE 3734178 A1 19890420; DE 3872338 D1 19920730
DOCDB simple family (application)
EP 88116746 A 19881010; AT 88116746 T 19881010; DD 32060488 A 19881010; DE 3734178 A 19871009; DE 3872338 T 19881010