Producing metallic articles by reduction of nonmetallic...

Details Producing metallic articles by reduction of nonmetallic... Producing metallic articles by reduction of nonmetallic...

2005-04-26

2005-04-26

Wyszomierski, George (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

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

C075S367000, C075S369000

Reexamination Certificate

active

06884279

ABSTRACT:
A metallic article is produced by furnishing one or more nonmetallic precursor compound comprising the metallic constituent element(s), and chemically reducing the nonmetallic precursor compound(s) to produce an initial metallic particle, preferably having a size of no greater than about 0.070 inch, without melting the initial metallic particle. The initial metallic particle is thereafter melted and solidified to produce the metallic article. By this approach, the incidence of chemical defects in the metal article is minimized. The melted-and-solidified metal may be used in the as-cast form, or it may be converted to billet and further worked to the final form.

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ASM Handbook, vol. 7, Powder Metallurgy, (c) 1984, ASM International, pp. 164-168.*
Slides of Presentation: The Armstrong Process, presented by International Titanium Powder, LLC, 16 pages, 2002.

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