EP 0870074 A1 19981014 - PROCESS FOR COATING A METAL SUBSTRATE
Title (en)
PROCESS FOR COATING A METAL SUBSTRATE
Title (de)
VERFAHREN ZUM BESCHICHTEN EINES METALLISCHEN SUBSTRATES
Title (fr)
PROCEDE DE REVETEMENT D'UN SUBSTRAT EN METAL
Publication
Application
Priority
- FR 9601889 W 19961128
- FR 9515582 A 19951227
Abstract (en)
[origin: WO9724470A1] A surface preoxidation of the substrate (5) is carried out by placing the substrate in contact with an oxidant gas excited in a cold plasma, the substrate (5) being placed in the post-discharge of the plasma flow and heated to a temperature lower than 480 DEG C. At a temperature lower than 500 DEG C, metal boride is deposited on the preoxidized substrate (5). The deposition of boride is obtained by placing in contact with each other and with the substrate (5) a metal halide, a boron compound and a reducer element, in the form of gas substances. At least one of the gas substances is excited in a cold plasma. The process is particularly intended to coat the internal surface or the external surface of the lining tube of zirconium alloy with a zirconium boride layer which absorbes the neutrons.
IPC 1-7
IPC 8 full level
C23C 16/02 (2006.01); C23C 16/38 (2006.01); C23C 16/452 (2006.01); G21C 3/18 (2006.01)
CPC (source: EP)
C23C 16/0218 (2013.01); C23C 16/38 (2013.01); C23C 16/452 (2013.01); G21C 3/18 (2013.01); Y02E 30/30 (2013.01)
Citation (search report)
See references of WO 9724470A1
Designated contracting state (EPC)
BE DE ES FR GB SE
DOCDB simple family (publication)
WO 9724470 A1 19970710; EP 0870074 A1 19981014; FR 2743088 A1 19970704; FR 2743088 B1 19980320; ZA 9610686 B 19980619
DOCDB simple family (application)
FR 9601889 W 19961128; EP 96941074 A 19961128; FR 9515582 A 19951227; ZA 9610686 A 19961219