无压烧结制备ZrB_(2)-SiC复相陶瓷及性能研究  

Preparation and Properties of ZrB_(2)-SiC Composite Ceramics by Pressureless Sintering

作　　者：姜凯[1] 刘芸 王旌宇 綦育仕 周长灵[1] 张庆利 刘瑞祥[1] 田方 杨芳红[1] JIANNG Kai;LIU Yun;WANG Jing-Yu;QI Yu-Shi;ZHOU Chang-Ling;ZHANG Qing-li;LIU Rui-Xiang;TIAN Fang;YANG Fang-Hong(Shandong Industrial Ceramic Research and Design Institute,Zibo 255000,China;A military representative bureau ofthe Army Armament Department,Zibo 255000,China;School of Materials Science and Engineering,Harbin Institute ofTechnology,Weihai 264209,China;Engineer Military Representative ofice of PLA Air FOrce Equipment Department in Qingdao Region,Qingdao 266117,China)

机构地区：[1]山东工业陶瓷研究设计院有限公司,山东淄博255000 [2]陆军装备部某军事代表局,山东淄博255000 [3]哈尔滨工业大学(威海)材料科学与工程学院,山东威海264209 [4]空军装备部驻青岛地区军事代表室,山东青岛266117

出　　处：《现代技术陶瓷》2024年第4期313-324,共12页Advanced Ceramics

基　　金：国家重点研发计划(2021YFB3701400)。

摘　　要：以ZrB_(2)、SiC微粉为主要原料,以酚醛树脂为粘结剂,B4C为烧结助剂,采用冷等静压成型-无压烧结的制备工艺成功制备出ZrB_(2)-SiC复相陶瓷。研究了酚醛树脂的加入量对ZrB_(2)-SiC复相陶瓷的显微结构以及力学性能的影响,通过空气等离子烧蚀试验测试了复相陶瓷的抗氧化性能。结果表明,酚醛树脂在800℃下进行缓慢裂解,可以起到维型的作用,同时产生的孔洞最少;在酚醛树脂的加入量为6 wt.%的条件下,采用无压烧结工艺制备的ZrB_(2)-SiC复相陶瓷内部结构相对致密,气孔细小,元素分布相对均匀,体积密度达到95.3%,最大抗弯强度达到488 MPa,并表现出优异的抗氧化性能。ZrB_(2)-SiC composite ceramics were successfully prepared using ZrB_(2)and SiC micropowders as the main raw materials,phenolic resin as the binder,and B4C as the sintering aid,through a process of cold isostatic pressing followed by pressureless sintering.The study investigated the influence of the amount of phenolic resin added on the microstructure and mechanical properties of the ZrB_(2)-SiC composite ceramics.The oxidation resistance for ceramics was also tested using an air plasma ablation experiment.The results showed that the phenolic resin undergoes slow pyrolysis at 800℃,which helps to maintain the shape while producing minimal porosity.With the addition of 6wt.%phenolic resin,the ZrB_(2)-SiC composite ceramics prepared by pressureless sintering exhibited a relatively dense internal structure with fine pores and uniform element distribution.The bulk density reached 95.3%,with a maximum flexural strength of 488 MPa,and exhibited excellent oxidation resistance.

关 键 词：ZrB_(2)-SiC 无压烧结 酚醛树脂 

分 类 号：TQ174[化学工程—陶瓷工业]