| 简介 |
PROBLEM TO BE SOLVED : To provide a method for manufacturing a soft magnetic sintered alloy having a structure containing a metal nitride in boundaries among the particles of iron, an Fe-Si iron-base soft magnetic alloy, an Fe-Al iron-base soft magnetic alloy, an Fe-Si-Al iron-base soft magnetic alloy, an Fe-Cr iron-base soft magnetic alloy, or a nickel-base soft magnetic alloy (hereafter called soft magnetic alloys). SOLUTION : This manufacturing method comprises adding the powder of a hydride of R (rare earth element), Al, Li, Ca, Sr and Mg to the powder of a soft magnetic alloy, pulverizing and mixing them to prepare a mixed powder, compacting the obtained mixed powder to produce a compact, sintering the obtained compact at 900 to 1, 300°C in a non-oxidative atmosphere to produce a sintered compact, and nitriding the obtained sintered compact in a heating condition of 500 to 1, 000°C in nitrogen atmosphere. |
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