Patent ID: 8617290

Claim:
A method for manufacturing a Feâ€”Si alloy powder, comprising: providing a mixture of an Al 2 O 3 powder, an active agent powder, a Si powder, and a Fe powder; heating the mixture with a temperature of 700Â° C. to 1200Â° C. in a hydrogen atmosphere; magnetically separating a Fe-containing material from the mixture; and separating a Feâ€”Si alloy powder by soaking the Fe-containing material in an alkali solution, wherein in the heating of the mixture, the Si powder is deposited on the surface of the Fe powder and diffused into the Fe powder and wherein the active agent powder includes at least one of compounds selected from a group consisting of an alkali metal fluoride, an alkaline earth metal fluoride, NH 4 F, AlF 3 , and CuF 2 , and the amount of the active agent powder in the mixture is 0.1 wt % to 5.0 wt %.