A Partial Phase Diagram of Pt-Rich Pt–Mn Alloys
A Partial Phase Diagram of Pt-Rich Pt–Mn Alloys
复制标题
富铂铂锰合金的部分相图
DOI：
10.1143/jpsj.71.2459
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发表时间：
2002
影响因子：
1.7
通讯作者：
K. Ohshima
中科院分区：
文献类型：
--
作者：
T. Sembiring;Miwako Takahashi;K. Ota;T. Shishido;K. Ohshima
我们进行了X射线和电子衍射研究，重建了组成范围为10至35 at.%的富铂Pt-Mn合金的部分相图MN.电阻率测量也用于确定Pt-14.2at.%中的有序-无序转变温度Mn合金。建立了Cu 3 Au型有序结构与ABC 6型有序结构之间的相界，其中ABC 6型有序结构是作者最近发现的[J. Phys. Soc. Jpn. 71（2002）681]。在ABC 6型有序相中，在12.5 ~ 14.4at.%的组成范围内，出现了\（1}{2}\frac {1}{2}\frac{1}{2}\）及其等价位置（L点）和100，110及其等价位置（X点）的超晶格反射Mn低于682°C。在Cu 3 Au型有序相中，L点扩散最大值出现在15.9 ~ 19.7at.%的组成范围内Mn，以及X点处的超晶格反射。Cu 3 Au型有序结构在组成范围内是稳定的.
We have performed the X-ray and electron diffraction studies to reconstruct a partial phase diagram of Pt-rich Pt–Mn alloys in the composition range of 10 to 35 at.% Mn. Electrical resistivity measurement was also used for determining the order–disorder transition temperature in Pt–14.2 at.% Mn alloy. The phase boundary between Cu 3 Au type and ABC 6 type ordered structures is established, in which the latter has been found recently by the present authors [J. Phys. Soc. Jpn. 71 (2002) 681]. In the ABC 6 type ordered phase, superlattice reflections both at \(\frac{1}{2}\frac{1}{2}\frac{1}{2}\) and its equivalent position (L-point) and at 100, 110 and their equivalent positions (X-point) appear in the composition range from 12.5 to 14.4 at.% Mn below 682°C. In the Cu 3 Au type ordered phase, diffuse maxima at L-point appear in the composition range from 15.9 to 19.7 at.% Mn in addition to the superlattice reflections at X-point. The Cu 3 Au type ordered structure is found to be stable in the composition ran...