Synthesis of High-purity Fe_(2)AlB_(2) and the Effect as Sintering Additive for ZrB_(2)  

作　　者：WANG Rui XU Wen-Tao QIN Zi-Xuan LING Jun-Rong ZHOU You-Fu 王瑞;许文涛;秦梓轩;凌军荣;周有福(Fujian Normal University,College of Chemistry and Materials Science,Fuzhou 350007,China;Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;University of Chinese Academy of Sciences,Beijing 100039,China)

机构地区：[1]Fujian Normal University,College of Chemistry and Materials Science,Fuzhou 350007,China [2]Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China [3]University of Chinese Academy of Sciences,Beijing 100039,China

出　　处：《Chinese Journal of Structural Chemistry》2021年第3期283-290,271,共9页结构化学（英文）

基　　金：supported by the grants of CAS Priority Research Program(XDB20010300,XDA21010204);Science and Technology Program of Fujian Province(2017T3001)。

摘　　要：Fe_(2)AlB_(2) powder material was prepared by the direct reaction of iron,aluminum and boron powders in a tubular furnace.The effects of different Al contents,temperature and raw material pretreatment on the purity of product were studied.The mixed powder with the stoichiometric ratio of 1.5Al/2Fe/2B was processed by CIP (Cold Isostatic Pressing),and then calcined at 1150℃ for 120 min.The product containing a small amount of impurities is treated with alkaline solution to obtain high-purity Fe_(2)Al B_(2) powder.Zr B_(2)-Fe_(2)Al B_(2) composite ceramic was successfully prepared at 1250℃ by hot pressing sintering.The density,hardness and fracture toughness were 96.2%,22±0.3 GPa and 5.78±0.5 MPa·m^(1/2),respectively.

关 键 词：MAB phase ternary layered structure high purity ZrB_(2) 

分 类 号：TQ174.47[化学工程—陶瓷工业]