Process for densifying powder metallurgical product

Details Process for densifying powder metallurgical product Process for densifying powder metallurgical product

1994-05-05

1995-08-29

Walsh, Donald P.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Pretreatment of consolidated powders

419 32, 419 31, 419 43, 419 38, 419 54, B32F 312

Patent

active

054457904

ABSTRACT:
A process for densifying a powder metallurgical product comprising steps of preparing a powdery starting material, pre-sintering the powdery starting material at a relatively low temperature, executing a pore-eliminating process for eliminating pores resulting from the preceding step on the powdery starting material, and sintering the powdery starting material at a relatively high temperature. It is beneficial to produce a product having a large dimension, a desired shape, and excellent mechanical properties, and being appropriate for or capable of suffering any post-treatment.

REFERENCES:
patent: 4762558 (1988-08-01), German et al.
"Reactive Sintering Nickel-Aluminide to Near Full Density"; A. Bose; Powder Metallurgy International, vol. 20, No. 3, 1988, 5 pages.
"Elemental Powder Approaches to Ni-A1-Matrix Composites"; A. Bose et al; Journal of Metals, Sep. 1988; pp. 14-17.
Dixon, et al., "Powder Metallurgy for Engineers", Machinery Publishing Co., 1971, pp. 30-51.

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