Powder metallurgy methods and compositions

Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Powder pretreatment

Reexamination Certificate

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C419S035000

Reexamination Certificate

active

08062582

ABSTRACT:
The present invention provides metal powder compositions for pressed powder metallurgy and methods of forming metal parts using the metal powder compositions. In each embodiment of the invention, the outer surface of primary metal particles in the metal powder composition is chemically cleaned to remove oxides in situ, which provides ideal conditions for achieving near full density metal parts when the metal powder compositions are sintered.

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CRC Handbook of Chemistry and Physics, 76th Edition (1995), Section 8-45 to 8-55, “Dissociation Constants of Organic Acids and Bases”.
Heoganes Data Sheet for ANCORSTEEL 85 HP, undated.

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