摘要
研究将镨、砷按不同原子比密封在工业纯铁缸体内,按一定升温程序升温到1273 K并保温20 h。再通过光学显微镜、X射线衍射仪、扫描电镜能谱分析等手段,探究Pr-As-Fe在高温的相互作用。结果表明:二元化合物PrAs和Fe2As以及饱和砷的α-Fe固溶体为Pr-As-Fe高温相互作用的主要生成物,同时伴有少量Fe17Pr2化合物的生成。增加原子比,PrAs量随着减少,Fe2As和饱和砷的α-Fe固溶体量增加。Pr-As-Fe三元高温体系中,砷原子的量影响铁原子的扩散,铁原子的扩散量随着比例的增加而增加。
In this study,bismuth and arsenic were sealed in industrial pure iron cylinders according to different atomic ratios,and the temperature was raised to 1273 K and kept warm for 20 hours according to a certain heating program.Optical microscopy,X-ray diffractometry and scanning electron microscopy were used to observe the interaction of Pr-As-Fe at high temperature.The results showed that the binary compounds PrAs and Fe2As and theα-Fe solid solution with saturated arsenic were the main products of the interaction of Pr-As-Fe at high temperature,and a small amount of Fe17Pr2 compounds formed.With the increase of atomic ratio,the amount of PrAs decreased,while the amount ofα-Fe solid solution of Fe2As and saturated arsenic increased.In the Pr-As-Fe ternary high temperature system,the amount of arsenic atoms affected the diffusion of iron atoms,and the amount of diffusion of iron atoms increased as the ratio increased.
作者
罗锦校
黄润
付成辉
李玉莲
张金柱
LUO Jinxiao;HUANG Run;FU Chenghui;LI Yulian;ZHANG Jinzhu(School of Materials and Metallurgy, Guizhou University, Guiyang 550025, China;Laboratory Metallurgical Engineering and Energy Saving Process of Guizhou Province,Guiyang 550025, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2020年第1期1143-1147,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51764005)
关键词
镨
砷
铁
化合物
扩散
praseodymium
arsenic
iron
compound
diffusion
