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用差热分析(DTA),结合X射线衍射(XRD)研究了非晶Pr8Fe86B6合金的晶化动力学。结果表明:该非晶Pr8Fe86B6合金的晶化相为α-Fe固溶体、Pr2Fe23B3和Pr2Fe14B金属间化合物,通过对三相晶化激活能的分析得出:α-Fe相的激活能在晶化初期变化不大,当其体积分数大于8%时,其晶化激活能开始减小;而Pr2Fe23B3和Pr2Fe14B相的激活能随其体积分数的增加而减小,且α-Fe相较Pr2Fe23B3和Pr2Fe14B相容易晶化析出。
The crystallization kinetics of amorphous Pr8Fe86B6 alloy was investigated by differential thermal analysis (DTA) and X-ray diffraction (XRD). The results show that the crystallization phase of the amorphous Pr8Fe86B6 alloy is α-Fe solid solution, Pr2Fe23B3 and Pr2Fe14B intermetallic compounds. By analyzing the activation energy of the three phases, the activation energy of α-Fe phase changes in the early stage of crystallization The activation energy of Pr2Fe23B3 and Pr2Fe14B decreases with the increase of volume fraction, and α-Fe is easier to be compared with Pr2Fe23B3 and Pr2Fe14B Crystallization precipitation.