Fine-grained, high-purity earth acid metal powders, a process fo

Details Fine-grained, high-purity earth acid metal powders, a process fo Fine-grained, high-purity earth acid metal powders, a process fo

1989-06-12

1990-09-04

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75364, 419 2, 419 23, 419 63, 204292, 420425, 420427, B22F 100

Patent

active

049541692

ABSTRACT:
Earth acid metal powders, such as tantalum or niobium, useful in the production of electrolytic capacitors and other electronic components, are agglomerates of sintered compacts, wherein the mean grain size of the agglomerates is no more than 2.0 .mu.m, determined by the Fisher Sub-Sieve Sizer, and wherein the agglomerates consist of primary individual agglomerated particles of mean grain size of no more than 0.7 .mu.m.

REFERENCES:
patent: 4141720 (1979-12-01), Vartanlan
patent: 4347084 (1982-08-01), Hahn et al.
patent: 4483819 (1984-11-01), Albrecht et al.
patent: 4687632 (1987-08-01), Hurd et al.
patent: 4786319 (1988-11-01), Zeiringer

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