Experimental investigation and thermodynamic assessment of the Al–Ca–Ti system
Experimental investigation and thermodynamic assessment of the Al–Ca–Ti system
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DOI：
10.1007/s10853-015-9130-x
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发表时间：
2015-05
影响因子：
4.5
通讯作者：
M. Hampl;R. Schmid-Fetzer
中科院分区：
文献类型：
--
作者：
M. Hampl;R. Schmid-Fetzer
使用扫描电子显微镜、能量色散 X 射线光谱、X 射线粉末衍射和金相分析对三元 Al-Ca-Ti 合金样品和扩散偶 Al2Ca-Ti 进行研究。正如这些元素的组合所预期的那样，实验结果非常困难，并且使用了适应性技术。结果表明，没有观察到 Ca 在 Al-Ti 相中的三元溶解度，并且在三元中间成分范围内没有发现三元相。首次开发了二元Ca-Ti和三元Al-Ca-Ti相图。它们基于一致的热力学计算，通过结合二元边缘系统并结合富铝 Al20CaTi2 相。
Ternary Al–Ca–Ti alloy samples and diffusion couples Al2Ca–Ti were investigated using scanning electron microscopy with energy dispersive X-ray spectroscopy, X-ray powder diffraction, and metallographic analysis. The experiments turned out to be very difficult, as expected by this combination of elements, and adapted techniques were used. The results indicate that ternary solubilities of Ca in Al–Ti phases were not observed and no ternary phase was found in the ternary mid-composition range. The binary Ca–Ti and the ternary Al–Ca–Ti phase diagrams are developed for the first time. They are based on consistent thermodynamic calculation by combining the binary edge systems and incorporating the Al-rich Al20CaTi2phase.