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Mn_4Si_7Zr_4的新物相,其结构与Fe_4Si_7Zr_4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Zr_5Si_3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MnSi_2Zr和MnSiZr在600℃下是稳定存在的,未发现前人提到的三元化合物Mn_4Si_6Zr_3。
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.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2016年第1期112-116,共5页
Rare Metal Materials and Engineering
基金
国家自然科学基金(51001033)
广西自然科学基金(2011GXNSFA018030
2013GXNSFAA019315)
广西高校优秀人才资助计划项目
