Patent ID: 8647743
Filing Date: 2014-02-11
Classification: B22F,C22C,H01F,Y10T

Abstract:
1. A ferromagnetic powder composition comprising soft magnetic iron-based core particles, wherein a surface of the core particles is provided with a first phosphorus-based inorganic insulating layer and at least one metal-organic layer, located outside the first layer, of a metal-organic compound having a following general formula: wherein M is a central atom selected from Si, Ti, Al, or Zr; O is oxygen; R R wherein n is a number of repeatable units being an integer between 1 and 20; wherein the x is an integer between 0 and 1; wherein y is an integer between 1 and 2; wherein a metallic or semi-metallic particulate compound having a Mohs hardness of less than 3.5 is adhered to the at least one metal-organic layer; and wherein the powder composition further comprises a particulate lubricant.