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Current content: 156 809 018 patent documents

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176 501 new documents added

1 938 899 documents amended

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EP 0083842 B1 19890712 - SURFACE-COATED HARD METAL BODY AND METHOD OF PRODUCING THE SAME

Title (en)

SURFACE-COATED HARD METAL BODY AND METHOD OF PRODUCING THE SAME

Publication

EP 0083842 B1 19890712 (EN)

Application

EP 82306473 A 19821206

Priority

US 33136781 A 19811216
US 33136881 A 19811216

Abstract (en)

[origin: EP0083842A1] Improved adherence of oxide wear layers on hard metal or cemented carbide substrates is obtained by providing a thin surface-oxidized bonding layer comprising a carbide or oxycarbide of at least one of tantalum, niobium or vanadium, optionally adding aluminum to the bonding layer, and finally providing an outer oxide wear layer.

IPC 1-7

B22F 7/04; C22C 29/00; C23C 16/30

IPC 8 full level

C23C 30/00 (2006.01)

CPC (source: EP)

C23C 30/005 (2013.01)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0083842 A1 19830720; EP 0083842 B1 19890712; CA 1198945 A 19860107; DE 3279814 D1 19890817

DOCDB simple family (application)

EP 82306473 A 19821206; CA 417957 A 19821216; DE 3279814 T 19821206