National Research Council of Canada

Vincent Paris

Yannig Thomas

Sylvain St-Laurent

A particulate composite lubricant for powder metallurgy is provided. It includes: first discrete particles comprising Montan acid ester wax and at least one fatty amide wax including at least one of: a fatty primary monoamide wax and a fatty bisamide wax. In another embodiment, the particulate composite lubricant for powder metallurgy includes first discrete particles comprising Montan acid ester wax and second discrete particles comprising an organic, metal-free pulverulent lubricant selected from the group consisting of fatty bisamide waxes, fatty monoamide waxes, glycerides, Montan acid ester waxes, paraffin wax, polyolefines, polyamides, polyesters, and mixtures thereof, wherein the particulate composite lubricant comprises at least one fatty amide wax including at least one of a fatty monoamide wax and a fatty bisamide wax.

Lubricant for powder metallurgy and metal powder compositions containing said lubricant

A particulate composite lubricant for powder metallurgy comprises: first discrete particles comprising at least about 90 wt % of a fatty primary monoamide wax, being substantially free of fatty bisamide wax, and being at least partially coated with metal oxide nanoparticles and second metal-stearate free discrete particles comprising a fatty bisamide wax. A particulate composite lubricant for powder metallurgy can comprise: a Montan acid ester wax and at least one fatty amide wax comprising at least one of a fatty monoamide wax and a fatty bisamide wax.

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Sorel-Tracy, Canada

Vincent Paris