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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Non-isothermal approach to crystallization process of a Co-rich alloy
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Non-isothermal approach to crystallization process of a Co-rich alloy

机译：非等温法富钴合金的结晶过程

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摘要

In this work we have investigated the crystallization of a Co-rich alloy obtained by melt-spinning. The same process was repeated by applying a magnetic field at the moment of the solidification process. Furthermore, the melt-spun amorphous ribbons were subjected to mechanical alloying in a planetary ball-milling. The milling conditions were chosen to develop a material in a like-powdered form. The samples are amorphous as determined by X-ray diffraction patterns. Non-isothermal experiments were carried out by differential scanning calorimetry. An isoconversional method is applied to perform the kinetic analysis in order to obtain the activation energy and de Jhonson-Mehl-Avrami parameter. It was found a decrease of 15-25% in the activation energy of the main crystallization process in mechanically alloyed samples.
机译：在这项工作中，我们研究了通过熔融纺丝获得的富钴合金的结晶。通过在固化过程中施加磁场来重复相同的过程。此外，在行星式球磨机中对熔纺的非晶带进行机械合金化。选择研磨条件以形成类似粉末形式的材料。如通过X射线衍射图所确定的，样品是无定形的。非等温实验通过差示扫描量热法进行。为了获得活化能和de Jhonson-Mehl-Avrami参数，采用了等转化方法进行动力学分析。发现在机械合金化样品中，主要结晶过程的活化能降低了15-25％。

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