Lubricant for powder metallurgy and metal powder compositions containing said lubricant

A particulate composite lubricant for powder metallurgy comprising:

• first discrete particles comprising a mixture of Montan acid ester wax and at least one fatty amide wax, wherein the at least one fatty amide wax includes at least one of a fatty monoamide wax and a fatty bisamide wax, wherein the particulate composite lubricant is free of second discrete particles.

A particulate composite lubricant for powder metallurgy comprising 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 and wherein the first discrete particles are at least partially coated with metal oxide nanoparticles.

A particulate composite lubricant for powder metallurgy comprising:

• 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, wherein the first discrete particles are at least partially coated with metal oxide nanoparticles.

A particulate composite lubricant for powder metallurgy comprising:

• 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, wherein the particulate composite lubricant comprises between about 0.5 wt % and about 90 wt % of the Montan acid ester wax and a remaining portion of the particulate composite lubricant comprises the at least one fatty amide wax and a metal oxide nanoparticle coating.