EP 0710731 A3 19961127 - Use of a nitrogen-containing iron base alloy for machine members that are subjected to sliding surface friction
Title (en)
Use of a nitrogen-containing iron base alloy for machine members that are subjected to sliding surface friction
Title (de)
Verwendung einer stickstoffhältigen Eisenbasislegierung für Maschinenteile, welche auf gleitende Flächenreibung beansprucht sind
Title (fr)
Utilisation d'un alliage ferreux contenant de l'azote pour pièces de machine soumises à une friction de surface coulissante
Publication
Application
Priority
AT 205194 A 19941104
Abstract (en)
[origin: EP0710731A2] The use of a ferrous alloy for the mfr. of machine parts subject to high wear by sliding surface rubbing. The ferrous alloy contains in wt.%: 0.35-1 pref. 0.4-0.8 C; max. 1 Si; max. 1.6, pref. 0.3-1.4 N; max. 1 pref. max. 0.8 Al; max. 2.0 Co; 14-25, pref. 16-19 Cr; 0.5-03, pref. 0.8-1.5 Mo; max. 3, pref. max. 1.5 Ni; 0.04-0.4, pref. 0.05-02 V; max. 3 W; max. 0.18 Nb max. 0.2 Ti. The sum of C and N is 0.5-1.2 (pref. 0.61-0.95) and the balance is Fe plus usual impurities. Also claimed are: (i) a plunger piston esp. for displacement of corrosive media consisting of the above ferrous alloy coated with a layer of PVD or CVD deposited carbide and/or oxide and/or nitride of Al and/or Ti; and (ii) a piston ring esp. for internal combustion engines consisting of the above ferrous alloy and opt. at least partly, esp. on the surface subject to rubbing, a nitride layer of thickness of at least 0.05 mm, esp. thicker than 0.2 mm.
IPC 1-7
IPC 8 full level
C22C 38/22 (2006.01); C22C 38/24 (2006.01)
CPC (source: EP US)
C22C 38/22 (2013.01 - EP US); C22C 38/24 (2013.01 - EP US)
Citation (search report)
- [XY] DE 4212966 A1 19931021 - VER SCHMIEDEWERKE GMBH [DE]
- [XP] EP 0638658 A1 19950215 - SIMA SA [FR]
- [E] EP 0694622 A1 19960131 - BOEHLER YBBSTALWERKE [AT], et al
- [AY] DE 2535516 A1 19760304 - ARMCO STEEL CORP
- [A] PATENT ABSTRACTS OF JAPAN vol. 018, no. 313 (C - 1212) 15 June 1994 (1994-06-15)
- [Y] DATABASE WPI Section Ch Week 9317, Derwent World Patents Index; Class A32, AN 93-140023, XP002013919
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0710731 A2 19960508; EP 0710731 A3 19961127; AT 402224 B 19970325; AT A205194 A 19960715; US 5916517 A 19990629
DOCDB simple family (application)
EP 95890181 A 19951011; AT 205194 A 19941104; US 55387095 A 19951106