Sintering of particulate metal

Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions

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75222, B22F 310

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active

039716570

ABSTRACT:
In production of sintered bodies of particulate metal, especially porous sintered bodies, from particles of metal having a refractory oxide coating, a minor proportion of a flux is mixed with the particulate metal before sintering to aid in removing oxide from surfaces of the metal particles. The particulate metal may be aluminum, with which there may be mixed a minor proportion of particles of an alloying element. The flux may be a mixture of potassium fluoaluminate complexes; the residue of this flux, after sintering, provides a coating that aids in protecting the sintered article against corrosion.

REFERENCES:
patent: 2744011 (1956-05-01), Samuel et al.
patent: 2876097 (1959-03-01), Fisher
patent: 3004332 (1961-10-01), Werner
patent: 3195226 (1965-07-01), Valyi
patent: 3362818 (1968-01-01), Schwarzkopf et al.
Metals Handbook, vol. 6 pp. 676-677, 8th Ed., 1971.

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