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用X射线衍射分析仪 (XRD) ,透射电子显微镜 (TEM ) ,扫描电子显微镜 (SEM )和X射线吸收精细结构分析仪 (EXAFS)对机械合金化后的FeNiPB(Cu ,Nb)混合粉末进行了分析研究 .研究结果表明 :FeNiPB(Cu ,Nb)混合粉末球磨 2 0h后合金化 ,球磨 80h后FeNiPB(Cu ,Nb)混合粉末中的Fe ,Ni原子处于非晶环境中 ,粉末的形态为棉絮状 ,电子衍射为典型的非晶环 .XRD ,EXAFS ,TEM的分析结果表明在该条件下 ,FeNiPB(Cu ,Nb)混合粉末完全转变成了非晶 .FeNiPB(Cu ,Nb)非晶合金在 5 2 0 ℃ 加热 1h后产生纳米晶 ,所以纳米晶铁基合金可通过FeNiPB(Cu ,Nb)非晶合金部分晶化获得 .
The mechanically alloying FeNiPB (Cu, Nb) mixed powders were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray absorptive fine structure analyzer (EXAFS) The results show that the Fe and Ni atoms in FeNiPB (Cu, Nb) mixed powders are ball-milled for 20 h and then alloyed and ball-milled for 80 h, the powders are in the form of cotton The results of XRD, EXAFS and TEM show that the FeNiPB (Cu, Nb) mixed powders have completely transformed into amorphous form. The FeNiPB (Cu, Nb) After heating at 520 ℃ for 1h, nanocrystalline is produced, so the nanocrystalline iron-based alloy can be partially crystallized by FeNiPB (Cu, Nb) amorphous alloy.