Method of modifying titanium aluminide composition

Details Method of modifying titanium aluminide composition Method of modifying titanium aluminide composition

1989-12-04

1993-04-13

Roy, Upendra

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

95 1021, 427455, C22C 100

Patent

active

052019390

ABSTRACT:
A method of altering the composition of an alloy deposited by plasma-spray processing is disclosed. It has been found that the composition of a powder can be altered by selective vaporization of the more volatile components of the alloy. In order to do this, the gas mixture employed in the plasma processing is modified to a composition which imparts a higher superheat to the liquid particles undergoing plasma processing. In this way, an alloy which is out-of-specification can be brought within the specification as to its composition by reducing the more volatile components and accordingly increasing the concentration of the less volatile components.

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