Isothermal section of the Al–Dy–Ge ternary system at 673 K
Isothermal section of the Al–Dy–Ge ternary system at 673 K
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DOI：
10.1016/j.jallcom.2011.01.080
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发表时间：
2011-03
影响因子：
6.2
通讯作者：
Xiao-Li Yuan;Li-Bing Liu;G. Cai;H. Bo;Fuyong Cao;F. Zheng
中科院分区：
文献类型：
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作者：
Xiao-Li Yuan;Li-Bing Liu;G. Cai;H. Bo;Fuyong Cao;F. Zheng
用X射线粉末衍射和扫描电子显微镜的背散射电子成像能谱研究了Al-Dy-Ge三元系相图在673 K的等温截面。在Dy-Ge体系中，共存在包括Dy_3Ge_4在内的13种二元化合物。观察到四种三元化合物，即AlDyGe，Al 3Dy 2Ge 4，AlDy 2Ge 3和AlDy 2Ge 2，并发现五种新的三元化合物，在673 K下，在该系统中发现了Al0.33DyGe2，AlDy 2Ge 6，Al 2DyGe 2，AlDy 3Ge 3和Al 3 − xDy 11 Ge 7 +x（x≤0.7），以及一个伪二元化合物Al 3 − xDyGex。Ge在准二元化合物Al 3 − xDyGex中的最大固溶度约为7.5at.%在673 K时x=0.3。
The isothermal section of the phase diagram of the Al–Dy–Ge ternary system at 673K has been investigated by X-ray powder diffraction and scanning electron microscope equipped with energy dispersive X-ray spectroscopy in backscattered electron imaging modes. The existence of thirteen binary compounds including Dy3Ge4in the system Dy–Ge has been confirmed. Four ternary compounds, namely AlDyGe, Al3Dy2Ge4, AlDy2Ge3, and AlDy2Ge2were observed, and five new ternary compounds, i.e., Al0.33DyGe2, AlDy2Ge6, Al2DyGe2, AlDy3Ge3, and Al3−xDy11Ge7+x(x≤0.7), and one pseudo-binary compound Al3−xDyGexwere found in this system at 673K. The maximum solid solubility of Ge in the pseudo-binary compounds Al3−xDyGexis about 7.5at.% with x=0.3 at 673K.