Thermal analysis study for the phase determination and instable to metastable transformation of the Co–13Cu alloy
Thermal analysis study for the phase determination and instable to metastable transformation of the Co–13Cu alloy
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DOI：
10.1080/01411590903298744
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发表时间：
2009-08
影响因子：
1.6
通讯作者：
A. M. Mebed;M. Abd-Elrahman;A. Abd-Elnaiem;M. Gaffar
中科院分区：
文献类型：
--
作者：
A. M. Mebed;M. Abd-Elrahman;A. Abd-Elnaiem;M. Gaffar
利用差热分析（DTA）方法研究了具有晶界间隙的Co-Cu合金的相界和相平衡。各阶段的区域，即，Co-13 at%Cu合金具有明显的旋节和共格双节相变、周期相变、磁相变以及两相向α相变的转变。所得结果可能表明在不稳定区和亚稳区之间的边界处分解动力学的连续性，但需要活化势垒。磁性转变的活化能为182.2 ± 2.1 kJ mol−1。
The differential thermal analysis (DTA) is utilized to determine the phase boundary and phase equilibria of Co–Cu alloy having a miscibility gap. Regions for various phase i.e., spinodal and coherent binodal, peritectic, magnetic and the transformation from the two phases to α phase transformations are distinctly determined for the Co–13 at%Cu alloy. The obtained results might indicate the continuity of the decomposition kinetics at the boundary between instable and the metastable regions but an activation barrier is needed. The activation energy for the magnetic transformation is determined to be 182.2 ± 2.1 kJ mol−1.