| 1. | And generally speaking , the grain sizes were all less than 100nm . the average grain sizes of nd2fe14b and - fe reached a minimum of sizes after crystallization treatment ( temperature of crystallization : 650 ; heat preservation time : 5 hours ) 对球磨5小时的合金粉末进行晶化处理,可以发现,在晶化过程中,随晶化温度的增加晶粒尺寸逐渐长大,但总体来说,都在100nm以下。 |