以二硼化钛微粉为原料,采用放电等离子烧结技术,通过控制烧结温度、保温时间、施加压力等工艺参数,成功的制备出具有高强度和高气孔率的二硼化钛多孔陶瓷.采用浸泡介质法,三点弯曲法测试了材料的气孔率,开口气孔率及强度;用扫描电镜对材料断口进行了观察.实验结果表明:在1300~1500 ℃的烧结温度下,获得了气孔率33%~45%,最大抗弯强度>60 MPa的二硼化钛多孔陶瓷.扫描电镜结果显示,二硼化钛颗粒间有明显的颈部烧结.
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