MAGNETIC POWDER AND PREPARATION METHOD THEREOF
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United States of America
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Mar 26, 2020
app pub date -
Sep 25, 2019
filing date -
Sep 25, 2019
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Abstract
Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder.
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