Preparation and oxidation characteristics of ZrC-ZrB2 composite powders with different proportions

作     者：Yu Wang Guohua Zhang Kuochih Chou Yu Wang;Guohua Zhang;Kuochih Chou

作者机构：State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2022年第29卷第3期

页      面：521-528页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the Fundamental Research Funds for the Central Universities China(No.FRF-IDRY-19-012) 

主　　题：borides carbides core-shell structures powders ultra-high temperature ceramic 

摘      要：ZrC and ZrB2 are both typical ultra-high temperature ceramics,which can be used in the hyperthermal *** this study,a method for preparing ultrafine ZrC-ZrB2 composite powder was provided,by using the raw materials of nano ZrO2,carbon black,B4C,and metallic *** is worth pointing out that ZrC-ZrB2 composite powder with any proportion of ZrC to ZrB2 could be synthesized by this ***,a mixture of ZrC and C was prepared by carbothermal reduction of *** adjusting the addition amount of B4C,ZrC was boronized by B4C to generate ZrC-ZrB2 composite powder with different *** this method,five composite powders with different molar ratios of ZrC and ZrB2(100ZrC,75ZrC-25ZrB2,50ZrC-50ZrB2,25ZrC-75ZrB2,and 100ZrB2)were *** the temperature of boronization and decarburization process was 1473 K,the particle size of product was only tens of ***,the oxidation charac-teristics of different composite powders were investigated through oxidation *** oxidation resistance of ZrC-ZrB2 composite powder continued to increase as the content of ZrB2 increased.