EP 0795367 A1 19970917 - Silver-iron material for electrical switch contacts and process for its preparation
Title (en)
Silver-iron material for electrical switch contacts and process for its preparation
Title (de)
Gesinterter Silber-Eisen-Werkstoff für elektrische Kontakte und Verfahren zu seiner Herstellung
Title (fr)
Matière argent-fer pour contacts interrupteurs électriques et procédé pour sa fabrication
Publication
Application
Priority
DE 19607183 A 19960227
Abstract (en)
[origin: DE19607183C1] A sintered Ag-Fe material consists of (in wt.%): 0.5-20 Fe; 0-5 Zn, Cu, Mn, Re, Ir, Ru and/or oxides of W, Mo, Zn, Al, In, Si, Zr; balance Ag with the Fe contg. >0.25% C. The amt. of carbon in the Fe is pref. >0.4, esp. 0.6-1.2%. The material is made by mixing together the starting powders in the amts. prescribed, cold isostatic pressing, sintering at 650-940 deg C and then extruding. The sintering is carried out in a hydrogen-free protective atmosphere.
Abstract (de)
Gesinterte Silber-Eisenwerkstoffe für elektrisch Kontakte, die in ihren Eigenschaften mit Silber-Nickel-Werkstoffen vergleichbar sind, erhält man, wenn man Eisenpulver mit mehr als 0,25 Gew.% Kohlenstoff und Mikrohärten von mehr als 200 HV 0,025 einsetzt und das Sintern in einer wasserstofffreien Schutzgasatmosphäre durchführt.
IPC 1-7
IPC 8 full level
B22F 1/00 (2006.01); B22F 1/12 (2022.01); B22F 3/12 (2006.01); C22C 1/04 (2006.01); C22C 1/05 (2006.01); C22C 5/06 (2006.01); C22C 32/00 (2006.01); H01H 1/02 (2006.01); H01H 1/023 (2006.01); H01H 1/0237 (2006.01); H01H 1/027 (2006.01); H01H 11/04 (2006.01)
CPC (source: EP US)
B22F 1/09 (2022.01 - EP US); B22F 1/12 (2022.01 - EP US); C22C 1/0466 (2013.01 - EP US); C22C 5/06 (2013.01 - EP US); C22C 32/0084 (2013.01 - EP US); H01H 1/023 (2013.01 - EP US); H01H 1/0237 (2013.01 - EP US); H01H 1/027 (2013.01 - EP US); H01H 11/048 (2013.01 - EP US); Y10S 428/929 (2013.01 - EP US); Y10T 428/1216 (2015.01 - EP US); Y10T 428/12167 (2015.01 - EP US); Y10T 428/12896 (2015.01 - EP US); Y10T 428/2813 (2015.01 - EP US)
Citation (search report)
- [X] EP 0144959 A2 19850619 - SCM CORP [US]
- [A] US 4937041 A 19900626 - DEFFEYES ROBERT J [US]
- [A] US 3708283 A 19730102 - HILL F
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DE 19607183 C1 19970410; CN 1080766 C 20020313; CN 1161380 A 19971008; DE 59703840 D1 20010726; EP 0795367 A1 19970917; EP 0795367 B1 20010620; ES 2160270 T3 20011101; JP H09235634 A 19970909; US 5985440 A 19991116
DOCDB simple family (application)
DE 19607183 A 19960227; CN 97101995 A 19970226; DE 59703840 T 19970129; EP 97101342 A 19970129; ES 97101342 T 19970129; JP 3864697 A 19970224; US 80672597 A 19970227