Coating processes – Electrical product produced – Welding electrode
Patent
1988-03-09
1989-05-23
Morgenstern, Norman
Coating processes
Electrical product produced
Welding electrode
427 451, 4271261, 416241R, 416224, B05D 306, B05D 302, B63H 126, B64C 2746
Patent
active
048329932
ABSTRACT:
The portion of the blade (1) to be coated has pure vanadium powder deposited thereon and the temperature of the powder is raised to a temperature which is slightly higher than the melting point of vanadium. Thereafter, a powder mixture is deposited on the vanadium layer, said powder comprising about one third by weight of titanium carbides, titanium nitrides, or titanium borides, which are bonded by a martensitic or austenomartensitic stainless steel. The powder is then raised to a temperature which is greater than its melting temperature and less than the melting temperature of vanadium. A titanium alloy blade it includes, on its periphery, a coating layer (5) which is at least 1 mm thick and which includes about one third by weight titanium carbides, or titanium nitrides, or titanium borides bonded by a martensitic or austenomartensitic stainless steel, said coating layer covering an under layer (6) of vanadium having a thickness lying between 0.5 mm and 1.5 mm. The resulting blade is highly resistant to abrasion by water droplets.
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Alsthom
Morgenstern Norman
Padgett Marianne L.
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