Investigation of the isothermal section of the Ce-Co-Al ternary system at 573 K  

作　　者：姚青荣 周怀营 唐成颖 潘顺康 

机构地区：[1]School of Materials Science and Engineering, Guilin University of Electronic Technology [2]School of Materials Science and Engineering, Central South University

出　　处：《Journal of Rare Earths》2011年第7期650-653,共4页稀土学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (50631040, 50861006, 50961005)

摘　　要：The isothermal section of the Ce-Co-Al ternary system at 573 K was investigated by X-ray powder diffraction （XRD）, scanning electron microscopy （SEM） and energy dispersive X-ray spectroscopy （EDS） techniques. It consisted of 19 single-phase regions, 46 two-phase regions and 25 three-phase regions. Four ternary compounds, namely CeCoAl, Ce2Co15Al2, CeCoAl4, CeCo2Al8, were confirmed in this system. At 573 K, the maximum solid solubilities of Co in CeAl2 and Al in CeCo2 were about 10.4 at.% and 10.0 at.%, respectively. The homogeneity range of CoAl phase extended from about 46.0 to 56.0 at.% Al.The isothermal section of the Ce-Co-Al ternary system at 573 K was investigated by X-ray powder diffraction （XRD）, scanning electron microscopy （SEM） and energy dispersive X-ray spectroscopy （EDS） techniques. It consisted of 19 single-phase regions, 46 two-phase regions and 25 three-phase regions. Four ternary compounds, namely CeCoAl, Ce2Co15Al2, CeCoAl4, CeCo2Al8, were confirmed in this system. At 573 K, the maximum solid solubilities of Co in CeAl2 and Al in CeCo2 were about 10.4 at.% and 10.0 at.%, respectively. The homogeneity range of CoAl phase extended from about 46.0 to 56.0 at.% Al.

关 键 词：rare-earth alloys X-ray diffraction phase identification electron microscopy 

分 类 号：TG139.8[一般工业技术—材料科学与工程]