Lubricated aluminum powder compositions

Details Lubricated aluminum powder compositions Lubricated aluminum powder compositions

1998-06-16

1999-09-14

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

75249, 75231, 419 37, 419 57, B22F 100

Patent

active

059517379

ABSTRACT:
Aluminum powder compositions intended for powder metallurgy applications are provided. The powder compositions contain aluminum and aluminum alloys or blends made from elemental powders, admixed with a polyethylene lubricant. The polyethylene admixture eases the compaction of powders and the ejection of parts. As compared to other conventional admixed lubricants used for Al powder metallurgy applications, polyethylene allows to obtain parts with higher green and sintered strengths. Proper delubrication prior to sintering is of importance.

REFERENCES:
patent: 3791800 (1974-02-01), McGee
patent: 4104062 (1978-08-01), Weaver
patent: 5100736 (1992-03-01), London et al.
patent: 5405571 (1995-04-01), Truckner et al.
H.C. Newbing and G. Jangg, "Sintering of Aluminum Parts: The State-of-the-Art", Metal Powder Report, May 1987, (42), 354-358.
J.N. Auburn and J.S. Choo, "Effect of Chemistry and Compact Density on the Decomposition of P/M Lubricants", Advances in Powder Metallurgy and Particulate Materials, 1994, (3), 103-116.

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