Isothermal Section of the Ti-Ta-Sn Ternary System at 1173 K
Isothermal Section of the Ti-Ta-Sn Ternary System at 1173 K
复制标题
Ti-Ta-Sn 三元体系 1173 K 的等温截面
DOI：
10.1007/s11669-014-0304-z
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发表时间：
2014-06-01
影响因子：
1.4
通讯作者：
Bai, W. M.
中科院分区：
文献类型：
--
作者：
Wang, J. L.;Liu, L. B.;Bai, W. M.
采用X射线衍射、扫描电镜和电子探针等方法研究了Ti-Ta-Sn三元系在1173 K时的相平衡。在整个组成范围内的等温截面，其中8个单相区和7个三相区共存。实验中发现了三元化合物Ti_（36）Ta_（28）Sn_（36），并发现了β-Ti_（6Sn）5 + Ti_（36）Ta_（28）Sn_（36）+Ta_3Sn和Ti_2Sn + Ti_3Sn + β（Ti，Ta）两个三相区。实验分析表明，固溶体β（Ti，Ta）溶解高达约21.2at. Ta在Ti_3Sn和Ti_5Sn_3中的最大固溶度可达9.3和5.9at.%，分别Ta在Ti 2 Sn和β-Ti 6 Sn 5中的溶解度值不小于7.3和15.5原子%，而Ti在Ta 3Sn中的含量不低于8.8at.%。液相主要存在于富锡角。
The phase equilibrium of the Ti-Ta-Sn ternary system at 1173 K was investigated experimentally using x-ray diffraction, scanning electron microscopy, and electron probe microanalysis. The isothermal section on the whole composition range was constructed, where eight single-phase regions and seven three-phase regions coexisted. The ternary compound Ti36Ta28Sn36 was found in the experiment, and two three-phase regions beta-Ti6Sn5 + Ti36Ta28Sn36 + Ta3Sn and Ti2Sn + Ti3Sn + beta(Ti, Ta) were experimentally detected. Experimental analysis shows that the solid solution beta(Ti, Ta) dissolves up to approximately 21.2 at.% Sn, and that the maximum solubility of Ta in Ti3Sn and Ti5Sn3 can reach up to 9.3 and 5.9 at.%, respectively. The solubility values of Ta in Ti2Sn and beta-Ti6Sn5 are no less than 7.3 and 15.5 at.%, respectively, whereas that of Ti in Ta3Sn is no less than 8.8 at.%. The liquid phase mainly exists in the Sn-rich corner.