EP 0147011 A3 19860326 - A NON-CYANIDE SALT BATH AND PROCESS FOR CARBURIZATION OF FERROUS METALS AND ALLOYS
Title (en)
A NON-CYANIDE SALT BATH AND PROCESS FOR CARBURIZATION OF FERROUS METALS AND ALLOYS
Publication
Application
Priority
US 56628883 A 19831228
Abstract (en)
[origin: EP0147011A2] A non-cyanide molten salt bath composition for the carburization of objects made of ferrous metals or alloys at a temperature in the range of 900-1050 DEG C comprises: (a) 85-99% of an alkali metal chloride or a mixture of alkali metal chlorides; (b) 0.25-8% of an activator, which is an oxygen containing compound barium and/or strontium compound and (c) sufficient amount of finely divided graphite to provide a continuous cover on the surface of the molten salt mixture. The ferrous metal or alloy part is immersed in the molten mixture at a temperature in the range of 900 DEG C to 1050 DEG C.
IPC 1-7
IPC 8 full level
C23C 8/46 (2006.01)
CPC (source: EP)
C23C 8/46 (2013.01)
Citation (search report)
- [X] DE 627008 C 19360306 - DEGUSSA
- [AD] FR 2156086 A1 19730525 - PARK CHEM CO
- [A] US 2492803 A 19491227 - LEININGER PAUL M
- [A] CHEMICAL ABSTRACTS, vol. 90, 1979, no. 26895d, Columbus, Ohio, US; M.WASA et al.: "Liquid carburization in noncyanide bath. Electrolytic carburization" & KOGYO KANETSU 1978, 15(4), 27-34
- [A] CHEMICAL ABSTRACTS, vol. 84, 1976, page 176, no. 183033q, Columbus, Ohio, US; K.HOSOKAWA: "Boro-carburizing of iron and steel immersed in a hot bath containing boron carbide and barium oxide" & NIPPON KINZOKU GAKKAISHI 1976, 40(1), 57-61
Designated contracting state (EPC)
BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0147011 A2 19850703; EP 0147011 A3 19860326; CA 1244748 A 19881115; ES 539095 A0 19860401; ES 8606522 A1 19860401
DOCDB simple family (application)
EP 84306336 A 19840917; CA 463590 A 19840919; ES 539095 A 19841227