Solid solubility of CoSi2 in β-FeSi2
Solid solubility of CoSi2 in β-FeSi2
复制标题
CoSi2 在 β-FeSi2 中的固溶度
DOI：
10.1007/bf00551006
复制
发表时间：
1970
影响因子：
4.5
通讯作者：
R. Bucksch
中科院分区：
文献类型：
--
作者：
J. Hesse;R. Bucksch
Ware 和 McNeill 将富含 FeSi~ 的多晶 FeSi2-CoSi~ 合金的热导率确定为 CoSi2 含量的函数 [1]。他们发现，CoSi2 根据预期固溶效应降低了热导率，CoSi2 含量最高可达 6%。 K 值高于 6 mol% CoSi2 的增加归因于在超过 6 mol% CoSi2 的最大固溶度后出现的第二相。最近已经确认了最小in~c [2]。在目前的工作中，我们通过直接测定 CoSi2 在 fi-FeSi2 中的固溶度来检查上述解释。为此目的，按照 Hesse [2] 的描述制备样本。 a-+/?考虑到相变滞后现象，相变在750℃下进行[3, 4]，并通过X射线衍射进行检查。 3-FeSi 2 的三个正交轴的长度变化按照Bucksch [5]的描述进行测量。结果绘制在图 4 中。 1 与合金中 CoSi2 含量的关系。一个
The thermal conductivity~: of FeSi~-rich polycrystalline FeSi2-CoSi~ alloys was determined as a function of the CoSi2 content by Ware and McNeill [1]. They found that CoSi2 lowers the thermal conductivity according to the expected solid solution effect up to 6 tool% CoSi2. The increase in K above 6 mol% CoSi2 was ascribed to a second phase which appears after exceeding the maximum solid solubility at 6 mol% CoSi2. The minimum in~ c has recently been confirmed [2]. In the present work we have checked the above interpretation by a direct determination of the solid solubility of CoSi2 in fi-FeSi2. For this purpose specimens were prepared as described by Hesse [2]. The a-+/? phase transformation was performed at 750~ C in view of the transformation hysteresis [3, 4], and checked by X-ray diffraction. The length changes of the three orthorhombic axis of] 3-FeSi2 were measured as described by Bucksch [5]. The results are plotted in fig. 1 against the CoSi2 content of the alloy. A