Phase equilibria of Co-Mo-Zn ternary system
Phase equilibria of Co-Mo-Zn ternary system
复制标题
Co—Mo—Zn三元系的相平衡
DOI：
10.1016/s1003-6326(20)65223-2
复制
发表时间：
2020-02-01
影响因子：
4.5
通讯作者：
Hu, Jing-xian
中科院分区：
文献类型：
--
作者：
Peng, Zhi-yong;Wang, Xin-ming;Hu, Jing-xian
采用平衡合金法和扩散偶法，用扫描电镜结合能谱仪、X射线衍射仪和电子探针显微分析仪测定了Co-Mo-Zn三元系在600 ℃和450 ℃的等温截面。实验结果表明，Co-Mo-Zn合金在600 ℃等温截面上有6个三相区，450 ℃等温截面上有9个三相区。在这两个等温截面中没有发现三元化合物。Mo在γ-Co_5Zn_（21）、γ（1）-CoZn_（7）、γ（2）-CoZn_（13）和β（1）-CoZn中的最大溶解度和Zn在ε-Co_3Mo中的最大溶解度均不超过1.5at.%。Zn在μ-Co_7 Mo_6中的最大溶解度为2.1at.% 2.7at.%分别在600和450摄氏度下。此外，Co在MoZn 7和MoZn 22中的最大溶解度为0.5at.% 4.7at.%在450摄氏度下，分别。
To experimentally determine the isothermal sections of Co-Mo-Zn ternary system at 600 and 450 degrees C, the equilibrated alloy and diffusion couple methods were adopted by using scanning electron microscopy coupled with energy-dispersive spectrometry, X-ray diffractometry and electron probe microanalysis. Experimental results show that there are six three-phase regions on the Co-Mo-Zn isothermal section at 600 degrees C and nine three-phase regions on the Co-Mo-Zn isothermal section at 450 degrees C. No ternary compound is found in these two isothermal sections. Both the maximum solubilities of Mo in the Co-Zn compounds (gamma-Co5Zn21, gamma(1)-CoZn7, gamma(2)-CoZn13 and beta(1)-CoZn) and that of Zn in epsilon-Co3Mo are no more than 1.5 at.%. The maximum solubilities of Zn in mu-Co7Mo6 are determined to be 2.1 at.% and 2.7 at.% at 600 and 450 degrees C, respectively. In addition, the maximum solubilities of Co in MoZn7 and MoZn22 are 0.5 at.% and 4.7 at.% at 450 degrees C, respectively.