Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1997-04-24
1999-01-26
Jenkins, Daniel J.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75255, 419 32, 419 37, 419 38, 419 39, 419 57, C22C 104, C22C 3302, C22C 3806, B22F 312
Patent
active
058640711
ABSTRACT:
Powdered ferrous metal compositions are disclosed which provide for increased corrosion resistance through the admixing of powder aluminum containing compositions with standard ferrous metal compositions prior to forming the powder metal parts. In a preferred embodiment, the aluminum ranges is admixed as an FeAl alloy powder with the standard ferrous metal composition. The present invention further includes a powder metal ferrous part formed from the composition produced by a method including the steps of (i) providing a ferrous powder metal composition, (ii) admixing a powder aluminum containing composition with the ferrous composition to form a blended mixture, and (iii) forming a powder metal part from at least a portion of the blended mixture. In accordance with the present invention, the admixing of powder aluminum with powder steels increases the corrosion resistance of the resulting part formed from the mixture and allows the use in applications in which the parts are exposed to more aggressive corrosive environments than possible in prior art compositions.
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Jenkins Daniel J.
Keystone Powdered Metal Company
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