氮化硅粉改性及其陶瓷高温摩擦磨损性能研究  

Modification of Silicon Nitride Powders and Friction and Wear Properties of Ceramics at High Temperature

作　　者：刘胜[1] 王营营[2] 满延进[1] 朱保鑫[2] 李伶[2] 王伟伟 王晓东 王洪升[2] 宋涛[2] 杨治华[3] 刘文进 LIU Sheng;WANG Yingying;MAN Yanjin;ZHU Baoxin;LI Ling;WANG Weiwei;WANG Xiaodong;WANG Hongsheng;SONG Tao;YANG Zhihua;LIU Wenjin(Beijing Power Machinery Research Institute,Beijing 100074,China;Shandong Industrial Ceramic Research and Design Institute Co.,Ltd,Zibo 255000,Shandong,China;Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)

机构地区：[1]北京动力机械研究所,北京100074 [2]山东工业陶瓷研究设计院有限公司,山东淄博255000 [3]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《陶瓷学报》2024年第1期139-149,共11页Journal of Ceramics

基　　金：国家重点研发计划(2022YFB3706300)。

摘　　要：以商用氮化硅粉体为研究对象,重点考察了粉体种类、粒度、杂质离子含量、相组成对所制材料性能的作用规律。该研究探讨了不同粉体对氮化硅陶瓷密度、抗弯强度、导热系数、摩擦磨损性能和微观形貌的影响。结果表明:采用甲醇改性液处理20 min得到的氮化硅粉体,制备得到了热力学性能最佳的氮化硅陶瓷:密度为3.16 g·cm^(-3)、抗弯强度为(727±20) MPa、热导率为71.6 W·m^(-1)·K^(-1)、Si_(3)N_(4)陶瓷与C/SiC陶瓷在1200℃下摩擦系数低于0.7,高温下氮化硅陶瓷仍表现出优异的耐摩擦磨损性能。The effects of powder type,particle size,impurity content and phase composition of commercial silicon nitride powder on material properties were studied.Density,bending strength,thermal conductivity,friction and wear properties and microstructure of silicon nitride ceramics from different powders were examined.The silicon nitride powder treated with methanol modified liquid for 20 min led to silicon nitride ceramics with optimized comprehensive properties,including density of 3.16 g·cm^(-3),bending strength of(727±20) MPa,thermal conductivity of 71.6 W·m^(-1)·K^(-1),friction coefficient between Si_(3)N_(4) ceramics and C/SiC ceramics of < 0.7 at 1200 ℃.The ceramics exhibited strong high temperature resistance to friction and wear.

关 键 词：氮化硅 粉体改性 显微结构 力学性能 摩擦性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]