Title

Suitability of Mechanically Alloyed Powders for MIM

Abstract

The suitability of mechanically alloyed (MA) powders for use in the feedstock of a metal injection molding (MIM) technique was evaluated. Mechanically alloyed powders can have some very unique properties, such as very fine grain sizes or higher than equilibrium solubilities that could be exploited if parts can be fabricated. In addition, MIM has a need for a source of cheaper, moldable powders. The characteristics of mechanically alloyed powders were measured and appear to be suitable for use in metal injection molding. Rheology studies of debinding-reaction injection molding (D-RIM) feedstock indicates that mechanically alloyed powders have acceptable flow characteristics. Molding of the feedstock had mixed success, with some powder working well, and some not. With a better understanding of the characteristics needed for successful MIM feedstock, mechanically alloyed powders appear to be a viable alternative to more conventional powders.

Meeting Name

1997 International Conference on Powder Metallurgy and Particulate Materials (1997: Jun. 29-Jul. 2, Chicago, IL)

Department(s)

Materials Science and Engineering

Keywords and Phrases

Feedstocks; Grain Size and Shape; Mechanical Alloying; Metal Molding; Rheology; Solubility; Debinding Reaction Injection Molding (D RIM); Powder Metals

International Standard Serial Number (ISSN)

1042-8860

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1997 Metal Powder Industries Federation, All rights reserved.

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