【摘要】 本文介绍了不同工艺参数对反应烧结碳化硅材料（RBSC）的显微结构和力学性能的影响,给出了这种材料的一些实验结果总结如下:1.素坯密度对 RBSC 材料的显微结构和力学性能产生很大的影响,所以控制适当的素坯密度是非常重要的;2.RB-24的 RBSC 试样性能:密度3.05～3.09g/cm³;游离硅15vol%,室温抗弯强度640MPa;室温时 K_1c为4.3,硬度 HR_A=92.5;韦伯尔模数为14;3.RBSC 材料的耐腐蚀性能和耐磨性能优于硬质合金和高纯 Al₂O_?。更多还原

【Abstract】 This paper presents the effects of various processing parameters on the micro-structure and mechanical properties of the reaction bonding silicon carbide （RB-SC）,and gives the following experimental results;1.The green density can greatly influence the microstructure and mechani-cal properties of the RBSC,so it is very important to control the green densityby selecting optimum processing factors.2.The sample of № RB-24 possesses the following properties;density 3.05-3.09 g/cm³:free silicon 15 vol.%;bend strength at room temperature 640 MPa;K_1c at room temperature 4.3;.hardness HR_A 92.5;Weibull modulus 14.3.The properties of corrosion resistance and wear resistance of the RBSCare superior to that of cemented carbide and highly pure alumina.更多还原