The isothermal section phase diagram of Er-Ni-Si ternary system at 773 K was created by x-ray powder diffraction (XRD) analysis in this paper. Seventeen known ternary compounds ErNiSi, ErNi 2 Si 2 , ErNiSi 2 , Er 2 Ni 3 Si 5 , ErNiSi 3 , Er 3 Ni 6 Si 2 , ErNi 10 Si 2 , Er 3 NiSi 2 , ErNi 2 Si, ErNi 5 Si 3 , ErNi 4 Si, ErNi 6 Si 6 , Er 33.3 Ni 18.7−10.7 Si 48−56 (Er 2 NiSi 3 ), Er 3 Ni 2 Si 4 , Er 33.3 Ni 8.7−4.7 Si 58−62 (Er 4 NiSi 7 ), Er 8 Ni 31 Si 11 , and Er 5 Ni 2 Si 3 (unknown structure type, similar to Dy 5 Ni 2 Si 3 ) have been testified. A new compound Er 37 Ni 3 Si 60 (unknown structure type) has been confirmed by excluding its XRD pattern as a superposition of nearby phase patterns. Part diffraction peaks have obvious movement with the change of Si content in Er 2 NiSi 3 solid solution, and more moving directions are not consistent, especially at (002) and (110) planes. At the same time, quasi–binary solid solutions were detected in Er 2 Ni 17− x Si x , ErNi 5− x Si x , Er 2 Ni 7− x Si x , ErNi 3− x Si x , ErNi 2− x Si x , ErNi − x Si x , and ErSi − x Ni x compounds. Other binary compounds of the Er-Ni-Si system do not show any visible solubility of the third element. If the mixture of α-ErSi 2 and β-ErSi 2 phases is regarded as one ErSi 2 phase, the 773 K isothermal section of the phase diagram of Er-Ni-Si system consists of 55 three phase regions and ten solid solution lines.

中文翻译：

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用 X 射线粉末衍射研究 Er-Ni-Si 三元相图的 773 K 等温截面

本文通过 X 射线粉末衍射 (XRD) 分析创建了 Er-Ni-Si 三元体系在 773 K 的等温截面相图。十七种已知的三元化合物 ErNiSi, ErNi 2 Si 2 , ErNiSi 2 , Er 2 Ni 3 Si 5 , ErNiSi 3 , Er 3 Ni 6 Si 2 , ErNi 10 Si 2 , Er 3 NiSi 2 , ErNi 2 Si, ErNi 5 Si 3 , ErNi 4 Si, ErNi 6 Si 6 , Er 33.3 Ni 18.7-10.7 Si 48-56 (Er 2 NiSi 3 ), Er 3 Ni 2 Si 4 , Er 33.3 Ni 8.7-4.7 Si 58-62 (Er 4 NiSi 7 ), Er 8 Ni 31 Si 11 和Er 5 Ni 2 Si 3 （结构类型未知，类似于Dy 5 Ni 2 Si 3 ）已被证实。一种新化合物 Er 37 Ni 3 Si 60（未知结构类型）已通过排除其 XRD 图案作为附近相图案的叠加而得到证实。部分衍射峰随着Er 2 NiSi 3 固溶体中Si含量的变化有明显的移动，更多的移动方向不一致，特别是在（002）和（110）平面。同时，在 Er 2 Ni 17- x Si x 、ErNi 5- x Si x 、Er 2 Ni 7- x Si x 、ErNi 3- x Si x 、ErNi 2- x Si 中检测到准二元固溶体x 、 ErNi - x Si x 和 ErSi - x Ni x 化合物。Er-Ni-Si 系统的其他二元化合物没有显示出任何可见的第三种元素溶解度。如果将α-ErSi 2 和β-ErSi 2 相的混合物视为一个ErSi 2 相，则Er-Ni-Si系相图的773 K等温截面由55个三相区和10条固溶线组成。Er-Ni-Si 系统的其他二元化合物没有显示出任何可见的第三种元素溶解度。如果将α-ErSi 2 和β-ErSi 2 相的混合物视为一个ErSi 2 相，则Er-Ni-Si系相图的773 K等温截面由55个三相区和10条固溶线组成。Er-Ni-Si 系统的其他二元化合物没有显示出任何可见的第三种元素溶解度。如果将α-ErSi 2 和β-ErSi 2 相的混合物视为一个ErSi 2 相，则Er-Ni-Si系相图的773 K等温截面由55个三相区和10条固溶线组成。