C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 33/02 (2006.01) B22F 1/00 (2006.01) H01F 1/20 (2006.01)
Patent
CA 2116361
The invention relates to an iron-based powder composition which, in addition to a substantially non-alloyed Fe-powder, comprises Sn and P, optionally lubricant and at most 1.0 % by weight of impurities. In the composition, Sn and P are present as an SnP-alloy in powder form, or else Sn is present in the form of a metallic powder and P is present in the form of a ferrophos- phorous powder, the Sn-content, based on the total iron-based powder composition, being at least 4.5 % by weight, and the indi- vidual particles, which contain Sn and P, being present as particles substantially separate from the particles in the non-alloyed Fe-powder. Finally, Sn and P may also be present as an SnP-alloy in powder form, and Sn may also be present as a metallic pow- der. This composition may optionally also contain P as a ferrophophorous powder.
Fetherstonhaugh & Co.
Hoganas Ab
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