EP 0289432 A1 19881102 - Process for forming at the surface of an aluminium alloy a zone rich in aluminium of at least one of the elements nickel, iron, cobalt.
Title (en)
Process for forming at the surface of an aluminium alloy a zone rich in aluminium of at least one of the elements nickel, iron, cobalt.
Title (de)
Verfahren zum Formen einer auf der Oberfläche eines Substrates aus einer Aluminiumlegierung befindlichen Zone, die reich ist an einem Aluminid von mindestens einem der Elemente Nickel, Eisen, Kobalt.
Title (fr)
Procédé pour former à la surface d'un substrat en alliage d'aluminium une zone riche en aluminiure d'au moins un des éléments nickel, fer, cobalt.
Publication
Application
Priority
FR 8704589 A 19870330
Abstract (en)
The invention relates to a process for forming at the surface of an aluminium alloy substrate a region rich in aluminide of at least one of the elements nickel, iron, cobalt. The process consists in performing an electrochemical deposition of at least one of the elements on the substrate without using an intermediate coat and then subjecting the whole to a diffusion heat treatment at a temperature above the initial melting temperature of at least one of the intermetallic compounds present in the substrate. It makes it possible to improve the hardness and the resistance to wear, to oxidation and to corrosion, as well as the elasticity modulus of aluminium alloy substrates. <IMAGE>
IPC 1-7
IPC 8 full level
C23C 26/02 (2006.01); C25D 5/44 (2006.01); C25D 5/50 (2006.01)
CPC (source: EP)
C23C 26/02 (2013.01); C25D 5/44 (2013.01); C25D 5/50 (2013.01)
Citation (search report)
- [A] DE 2362026 A1 19750626 - STEIGERWALD STRAHLTECH, et al
- [AD] EP 0093681 A1 19831109 - PECHINEY ALUMINIUM [FR]
- S. WERNICK et al.: "The suface treatment and finishing of aluminium and its alloys", vol. 2, 4ième édition, 1972, pages 874,875, Robert Draper Ltd, Teddington, GB, 1972
- S. WERNICK et al.: "The suface treatment and finishing of aluminium and its alloys", vol. 2, édition 4ième, pages 874,875, Robert Draper Ltd, Teddington, GB, 1972
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 88420105 A 19880329