中文摘要：

利用X射线衍射、扫描电子显微镜及能谱分析等手段建立了Mn-Zr-Si三元合金体系600℃等温截面。研究发现,Mn-Zr-Si三元合金系在600℃下存在一个成分为Mn4Si7Zr4的新物相,其结构与Fe4Si7Zr4结构相同,点阵常数为a=1.3027 nm,c=0.515 nm。研究还发现,高温相Zr5Si3在600℃是稳定的,未观察到Zr3Si的存在。此外,还确认了三元化合物MnSi2Zr和MnSiZr在600℃下是稳定存在的,未发现前人提到的三元化合物Mn4Si6Zr3。

英文摘要：

The isothermal section of the Mn-Zr-Si ternary system at 600 °C was investigated by X-ray diffraction, scanning electron microscope and energy dispersive analysis. Results show that there is a new ternary compound Mn4Si7Zr4 with cell parameters of a=1.3027 nm, c=0.515 nm, in the Mn-Zr-Si ternary system whose structure is similar to the tetragonal structure of Fe4Si7Zr4. No evidence is found to support the existence of Zr3 Si at 600 °C, which is taken as a stable phase in the previous Zr-Si system. Moreover, XRD and SEM/EDS reveal that Zr5Si3 is a stable phase at 600 °C. In addition, Mn Si2 Zr and Mn Si Zr are confirmed to be stable at 600 °C while Mn4Si6Zr3 is not found in the present work.