Suitability of Mechanically Alloyed Powders for MIM
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.
J. W. Newkirk et al., "Suitability of Mechanically Alloyed Powders for MIM," Proceedings of the 1997 International Conference on Powder Metallurgy and Particulate Materials (1997, Chicago, IL), vol. 3, pp. 18-187, Metal Powder Industries Federation, Jul 1997.
1997 International Conference on Powder Metallurgy and Particulate Materials (1997: Jun. 29-Jul. 2, Chicago, IL)
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)
Article - Conference proceedings
© 1997 Metal Powder Industries Federation, All rights reserved.
01 Jul 1997