Isothermal section of Mn-Zr-Si ternary system at 600℃

The isothermal section of the Mn-Zr-Si ternary system at 600℃ 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 Zr3Si at 600℃, 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℃. In addition, MnSi2Zr and MnSiZr are confirmed to be stable at 600℃ while Mn4Si6Zr3 is not found in the present work. © 2016, Science Press. All right reserved.