| 简介 |
PURPOSE : To produce a safe alloy for a rare earth-iron-nitrogen magnet in which nitriding time is reduced and excellent in magnetic properties by regulating its compsn. to a one essentially consisting of rare earths, iron and nitrogen and furthermore contg. specified amounts of Li, Na, K, Rb, Cs, Ca, Sr, Ba or the like. CONSTITUTION : This allay for a rare earth-iron-nitrogen magnet is the one having a compsn. essentially consisting of rare earths, iron and nitrogen and furthermore contg. at least one kind among Li, Na, K, Rb, Cs, Ca, Sr and Ba by >=0.005 atomic%, preferably 0.005 to 0.1%, in which the nitriding rate is promoted by the addition of alkali metals or alkaline earth metals high in electron donating properties, and nitriding of about >=12% N can be obtd. in practically enough short nitriding time only with gaseous nitrogen. |
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