Method and apparatus for controlling the size of powder...

Details Method and apparatus for controlling the size of powder... Method and apparatus for controlling the size of powder...

2008-04-01

2008-04-01

Wyszomierski, George P. (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

C075S367000, C075S617000, C075S620000

Reexamination Certificate

active

07351272

ABSTRACT:
A method of controlling the size and morphology of powder made by the subsurface injection of a halide vapor into a liquid metal is disclosed. A reaction zone is established and the temperature thereof or the time the powder remains therein is controlled to change powder characteristics.

REFERENCES:
patent: 3992192 (1976-11-01), Vartanian
patent: 5498446 (1996-03-01), Axelbaum et al.
patent: 5779761 (1998-07-01), Armstrong et al.
patent: 5958106 (1999-09-01), Armstrong et al.
patent: 6409797 (2002-06-01), Armstrong et al.

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