反应烧结B_(4)C-SiC陶瓷研究进展  

Progress on B_(4)C-SiC Ceramics Prepared by Reaction Sintering

作　　者：张巍 张金 段春雷 耿浩 韩阳 ZHANG Wei;ZHANG Jin;DUAN Chunlei;GENG Hao;HAN Yang(Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;China Academy of Machinery Shenyang Research Institute of Foundry Co.,Ltd.,State Key Laboratory of Advanced Casting Technologies,Shenyang 110022;Advanced Material Branch Company,Ningxia Machinery Research Institute Co.,Ltd.,Yinchuan 750001,China;Beijing Jinghua Zhilian Patent Office(general partnership),Beijing 100083,China;School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]中国科学院金属研究所,沈阳材料科学国家研究中心,沈阳110016 [2]中国机械总院集团沈阳铸造研究所有限公司,高端装备铸造技术全国重点实验室,沈阳110022 [3]宁夏机械研究院股份有限公司新材料分公司,银川750001 [4]北京京华知联专利代理事务所(普通合伙),北京100083 [5]大连理工大学材料科学与工程学院,辽宁大连116024

出　　处：《硅酸盐学报》2025年第3期675-687,共13页Journal of The Chinese Ceramic Society

基　　金：辽宁省自然科学基金(2022-MS-013);中国科学院金属研究所自主部署项目(E255L401);沈阳材料科学国家研究中心青年人才项目(E21SL412)。

摘　　要：反应烧结B_(4)C-SiC陶瓷具有烧结温度低、烧结时间短、制品无收缩、硬度高、断裂韧性高等优点,在机械、航天、航空、军工等领域具有广泛的应用前景。本文介绍了反应烧结B_(4)C-SiC陶瓷的烧结机理及特点,并对反应烧结B_(4)C-SiC陶瓷的微观结构特征以及影响反应烧结B_(4)C-SiC陶瓷力学性能的因素进行了全面的综述。最后,对反应烧结B_(4)C-SiC陶瓷的发展趋势进行了总结和展望,期望为未来反应烧结B_(4)C-SiC陶瓷的研制与应用提供参考。Boron carbide-silicon carbide(B_(4)C-SiC)ceramics have the performance of B_(4)C and SiC,which have low density,high melting point,high hardness,high elastic modulus,good wear resistance,high thermal tolerance,excellent chemical stability,etc..Compared with B_(4)C ceramics,B_(4)C-SiC ceramics possess a higher fracture toughness and a lower cost.Compared with SiC ceramics,B_(4)C-SiC ceramics have a higher hardness and a lower density.B_(4)C-SiC ceramics can be widely used in modern high-technology industries,such as aerospace,military,mechanical and automotive engineering,chemical industry,nuclear energy,high-temperature thermoelectric conversion,tribology,aviation,etc.due to their outstanding properties.In particular,the materials with the combination of high hardness and low density are more desirable than the materials without this characteristic.B_(4)C-SiC ceramics are suitable for use as lightweight structural materials and rotating tribo-components.Despite numerous advantages,B_(4)C-SiC ceramics are difficult to sinter to obtain high densification because of the high covalent bond ratios of both B_(4)C and SiC.The existing preparation methods of B_(4)C-SiC ceramics mainly include pressureless sintering,hot-press sintering,and spark plasma sintering.Although these methods can produce dense B_(4)C-SiC ceramics with a good performance,the sintering temperature is relatively high.In order to reduce the sintering temperature of B_(4)C-SiC ceramics,the reaction sintering method is developed to produce B_(4)C-SiC ceramics.The preparation method of reaction sintered B_(4)C-SiC ceramics is similar to that of SiC ceramics produced by reaction sintering,in which the molten Si with an appropriate fluidity infiltrates into a porous green/partially sintered body composed of only B_(4)C,the mixture of B_(4)C and free C,B_(4)C-SiC-C,or B_(4)C-SiC powders at high temperatures.The molten Si infiltrated reacts with C either from free C or B_(4)C to form SiC,the reaction leads to a volume expansion occupying partial pores in th

关 键 词：碳化硼-碳化硅 反应烧结 微观结构 力学性能 

分 类 号：TB321[一般工业技术—材料科学与工程]