采用热压烧结工艺制备了碳纤维增强TiC复合材料(20v0l%碳纤维),研究了热压烧结温度对力学性能的影响和碳纤维对复合材料高温强度的增强作用.结果表明:采用球磨湿混工艺将易于团聚的短碳纤维均匀地分散在TiC基体中,Cf/TiC复合材料最佳热压烧结温度为2100 C,Cf/TiC复合材料的室温抗弯强度为593MPa,断裂韧性为6.87MPa@m1/2,1400C时的高温抗弯强度为439MPa.定量分析了碳纤维对复合材料的增强和增韧效果.
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