B4C的研究现状及发展前景  

Research status and development prospect of B4C

作　　者：赵亮[2] 李艳国 邹芹[1,2] 王明智[2] ZHAO Liang;LI Yanguo;ZOU Qin;WANG Mingzhi(School of Mechanical Engineering,Yanshan University,Qinhuangdao 066004,Hebei,China;State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,Hebei,China)

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]燕山大学,亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《金刚石与磨料磨具工程》2019年第5期123-129,共7页Diamond & Abrasives Engineering

基　　金：“河北省首批青年拔尖人才计划”(冀办字[2013]19号);“丹凤朝阳人才计划”(丹人才办[2019]3号)

摘　　要：B4C具有高硬度、耐磨损、高导热系数、中子吸收性能良好、化学性能稳定等优良特性,在军工、核工业、工程及其他领域广泛应用。其常用的制备方法有碳热还原法、自蔓延高温合成法、化学气相沉积法、前驱体裂解法、溶剂热法。B4C独特的晶体结构使其粉体致密化烧结十分困难,加入添加剂可有效促进其致密化烧结进程,从而改善陶瓷性能。本文综述B4C的制备与烧结,并展望B4C的应用前景。B 4C has excellent properties such as high hardness,good wear resistance,high thermal conductivity,good neutron absorption performance and stable chemical properties.It is widely used in military,nuclear,engineering and other fields.The common preparation methods include carbothermal reduction,self-propagating high-temperature synthesis,chemical vapor deposition,precursor cracking and solvothermal methods.The unique crystal structure makes the densification and sintering of B 4C powder very difficult.Adding additives can effectively promote the compact sintering process and improve the ceramic properties.In this paper,the preparation and sintering of B 4C are reviewed,and the application prospects of B 4C are prospected.

关 键 词：B4C 烧结 添加剂 制备 

分 类 号：TQ127.1[化学工程—无机化工] TG73[金属学及工艺—刀具与模具]