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为研究碳 nm管对铁磷非晶热稳定性的影响 ,分别对快速凝固制备的铁磷非晶合金和碳 nm管铁磷非晶复合材料进行了晶化过程的磁热分析 ,并测定了晶化激活能和Avrami指数。结果表明 ,随着碳 nm管体积分数的提高 ,铁磷非晶基体的晶化特征温度明显提高 ,晶化激活能增加 ,加入体积分数约 10 %的碳 nm管使晶化开始温度提高了约10 0 K,晶化激活能增加约 40 % ;铁磷非晶晶化过程表现为形核及晶核一维长大的单一阶段 ,而碳 nm管铁磷非晶的晶化过程分为明显的两个阶段 ,出现了显著的二维长大过程。
In order to study the effect of carbon nm tube on the thermal stability of iron-phosphorus amorphous, the magnetocaloric analysis of the crystallization process of the rapidly solidified iron-phosphorus amorphous alloy and the carbon nm iron-phosphorus amorphous composite was carried out. Crystallization activation energy and Avrami index. The results show that with the increase of the volume fraction of carbon nm tube, the crystallization temperature of Fe-P amorphous matrix increases obviously and the crystallization activation energy increases. The addition of carbon nanotubes with volume fraction of about 10% increases the crystallization onset temperature by about 10 0 K, the activation energy of crystallization increased by about 40%. The crystallization process of iron-phosphorus was single stage of nucleation and one-dimensional growth of nucleus, while the crystallization process of carbon nm iron-phosphorus amorphous phase was obviously The two stages, there has been a significant two-dimensional process of growth.