Dimensionally-controlled cobalt-containing precision molded meta

Details Dimensionally-controlled cobalt-containing precision molded meta Dimensionally-controlled cobalt-containing precision molded meta

1980-11-14

1984-06-19

Hunt, Brooks H.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428567, 419 17, 419 27, B22F 326

Patent

active

044553544

ABSTRACT:
The shrinkage normally encountered when molding a mixture of spherical cobalt-containing particles and thermoplastic binder, heating the resulting molded article to degrade the binder and form a porous preform, and infiltrating the same is counteracted by adding finely divided elemental iron or elemental nickel to the spherical cobalt-containing particles. In addition to improving dimensional control, the elemental powder addition increases impact strength while maintaining hardness.

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"INCO Nickel Powders, Properties and Uses", 11, (International Nickel Company, Inc., 1975).
Snape, "Infiltration of Iron Compacts with Ni-Containing Copper Infiltrants", Powder Metallurgy International, 6, 1, pp. 20-22, (1974).
McGeary; R. K., J. Am. Ceram. Soc., 49, 513-22, (1962).

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