Method of making inelastically compressible ductile particulate

Details Method of making inelastically compressible ductile particulate Method of making inelastically compressible ductile particulate

1981-12-21

1984-05-01

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

419 28, 419 36, B22F 300

Patent

active

044459360

ABSTRACT:
Ductility is controlled by controlling the size of the particles of particulate material and/or the degree of sphericity of the particles, the smaller and/or more spherical the particles, the greater the ductility of the material. The material has preferably spherical pores, preferably hermetic, with a controlled ratio of pore volume to material volume to provide the property of compressibility. The particulate material itself must have the capability of becoming ductile. The ratio of pore volume to total volume of the material is controlled by particle size, sintering profile the property of the material and the initial volume loading of the pre-sintered part (i.e. the ratio of binder to particulate material). Some materials which are not ductile in and of themselves can be formed into ductile and/or compressible materials in accordance with the system of the present invention.

REFERENCES:
patent: 3809553 (1974-05-01), Peaslee
patent: 3810757 (1974-05-01), Andrews et al.
patent: 3832763 (1974-09-01), Schober
patent: 3989518 (1976-11-01), Rueckl
patent: 4006016 (1977-02-01), Zambrow et al.
Henderson, Metallurgical Dictionary, (1953), pp. 76, 111, 112, 141, 292.

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