450 °C and 600 °C Isothermal Sections of the Zn-Cr-Si Ternary Phase Diagram
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The 450 and 600 °C isothermal sections of the Zn-Cr-Si system were experimentally constructed using scanning electron microscopy equipped with energy dispersive x-ray spectrometry, and x-ray diffraction. Six three-phase regions in the 450 °C section and five three-phase regions in the 600 °C section were identified experimentally. No ternary compound was found. Si has low solubility in CrZn17. The Zn solubility in CrSi2, Cr5Si3, and Cr3Si are all less than 2.2 at.%. The CrSi phase cannot be in equilibrium with the η-Zn phase. Thermodynamic extrapolation of the Zn-Cr-Si system was carried out and showed good agreement with experimentally determined phase relationships.
KeywordsZn-Cr-Si system isothermal section phase equilibria thermodynamics
Financial support from the National Science Foundation of China (Grant Nos. 51471037 and 51671036) and a project funded by the Priority Academic Program Development of Jiangsu higher education institutions are greatly acknowledged.
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