摘要
过渡金属硼化物一直作为多功能硬质材料被广泛应用于工业生产中,但目前尚有一些材料的晶体结构受到争议.这些材料利用常规的测试方法(XRD、EDS等)不能对其进行区分,需要利用复杂且昂贵的测试手段来确定.合成纯相的材料也是一个难题,这对样品晶体结构的确定带来了更大的麻烦.利用高温高压法合成了曾经具有争议晶体结构的WB2.利用理论和实验相结合的方法确定了其晶体结构为WB2而不是W2B5.此种方法对确定具有争议晶体结构材料的晶体结构具有重要的指导意义.
Transition metal borides have been used widely as multi-functional hard materials in industrial production.However,the crystal structure of some materials is still controversial.These materials can’t be distinguished by conventional test methods(XRD,EDS,etc.).The distinguished test method are complex and expensive.But,synthesizing pure phase materials is also a challenge,which brings more trouble to the determination of the crystal structure of the sample.In this paper,WB2 with controversial crystal structure was synthesized by high temperature and high pressure method.The crystal structure was determined to be WB2 instead of W2B5 by the combination of theory and experiment.This method is important to determine the crystal structure of controversial crystal structure materials.
作者
王常春
花扬扬
WANG Changchun;HUA Yangyang(School of Science,Jilin Institute of Chemical Technology,Jilin City 132022,China)
出处
《吉林化工学院学报》
CAS
2020年第7期6-9,共4页
Journal of Jilin Institute of Chemical Technology
基金
吉林化工学院校级项目(2018020)
吉林化工学院重大科技项目(2018017)
吉林省教育厅“十三五”科学技术项目(JJKH20190826KJ)
博士科研启动资金项目(2019005)。
关键词
过渡金属硼化物
硬质材料
晶体结构
第一性原理
transition metal borides
hard material
crystal structure
first principles
