EP 0018263 B1 19830622 - PROCESS FOR CHROMIZING STEEL ARTICLES, AND CHROMIZED STEEL ARTICLES
Title (en)
PROCESS FOR CHROMIZING STEEL ARTICLES, AND CHROMIZED STEEL ARTICLES
Publication
Application
Priority
FR 7910094 A 19790420
Abstract (en)
[origin: US4481264A] The invention relates to a method for chromizing metallic pieces such as steel pieces and to chromized metallic pieces obtained thereby, said metallic pieces, particularly steel, comprising a chromized surface layer with a hardness at least equal to 1200 Vickers degrees and a thickness at least equal to 12 microns as well as an adjacent sub-layer with a hardness less than that of the core of said piece. The chromized surface layer has a depth preferably at least equal to 20 microns, more preferably 30 microns, and the hardness of the sublayer presents a maximum variation of 25 Vickers degrees with respect to that of the core of said piece.
IPC 1-7
IPC 8 full level
C23C 8/00 (2006.01); C23C 10/02 (2006.01); C23C 12/00 (2006.01); C23F 17/00 (2006.01)
CPC (source: EP US)
C23C 8/00 (2013.01 - EP US); C23C 10/02 (2013.01 - EP US); C23C 12/00 (2013.01 - EP US); Y10T 428/12576 (2015.01 - EP US); Y10T 428/12854 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0018263 A1 19801029; EP 0018263 B1 19830622; AT E3883 T1 19830715; DE 3063830 D1 19830728; FR 2454471 A1 19801114; FR 2454471 B1 19831223; US 4481264 A 19841106
DOCDB simple family (application)
EP 80400451 A 19800403; AT 80400451 T 19800403; DE 3063830 T 19800403; FR 7910094 A 19790420; US 32343381 A 19811120