EP 1409761 A1 20040421 - METHOD FOR CARBURIZING AND CARBONITRIDING STEEL BY CARBON OXIDE
Title (en)
METHOD FOR CARBURIZING AND CARBONITRIDING STEEL BY CARBON OXIDE
Title (de)
VERFAHREN ZUM ZEMENTIEREN ODER KARBONITRIEREN VON STÄHLEN MIT KOHLENMONOXID
Title (fr)
PROCEDE DE CEMENTATION ET DE CARBONITRURATION DES ACIER PAR L'OXYDE DE CARBONE
Publication
Application
Priority
- FR 0202151 W 20020620
- FR 0108329 A 20010625
Abstract (en)
[origin: FR2826376A1] The method for enriching steel with carbon by carbon oxide comprises a step involving heating to a temperature of enrichment in a furnace in a gaseous phase, then an enrichment step involving the introduction of a gas containing carbon oxide. According to the invention, atomic hydrogen is formed in said gaseous phase prior to the enrichment phase, said atomic hydrogen being of a sufficient amount to suppress interface resistance to the transfer of carbon and to avoid surface oxidation of said steel.
IPC 1-7
IPC 8 full level
C23C 8/02 (2006.01); C23C 8/22 (2006.01); C23C 8/32 (2006.01)
CPC (source: EP US)
C23C 8/02 (2013.01 - EP US); C23C 8/22 (2013.01 - EP US); C23C 8/32 (2013.01 - EP US)
Citation (search report)
See references of WO 03000947A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
FR 2826376 A1 20021227; FR 2826376 B1 20030926; EP 1409761 A1 20040421; US 2004231753 A1 20041125; WO 03000947 A1 20030103
DOCDB simple family (application)
FR 0108329 A 20010625; EP 02751277 A 20020620; FR 0202151 W 20020620; US 48173704 A 20040602