Coating processes – Solid particles or fibers applied – Interior or hollow article coating
Patent
1988-06-29
1990-09-11
Childs, Sadie
Coating processes
Solid particles or fibers applied
Interior or hollow article coating
427239, 427250, 427352, 4273766, 4273768, B05D 722, C23C 1606
Patent
active
049562010
ABSTRACT:
Method of producing a niobium component having passageways therein, including providing a refractory metal niobium alloy member having slots formed within its outer surface portions, inserting a paste of powdered vanadium into the slots, sintering the powdered vanadium paste, depositing a layer of niobium over the vanadium in the slots and over the outer surface portions of the member by chemical vapor deposition, and removing the vanadium from the slots by acid leaching to produce the niobium component.
REFERENCES:
patent: 3069847 (1962-12-01), Vest
patent: 3230613 (1966-01-01), Rechin et al.
patent: 4060693 (1977-11-01), Meyerhoff
patent: 4098920 (1978-07-01), Miller
patent: 4115916 (1978-09-01), Meyerhoff
Childs Sadie
Nathans Robert L.
Singer Donald J.
The United States of America as represented by the Secretary of
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