以Ti、Si、Al和C(石墨)元素粉为原料,采用原位热压烧结法制备了高纯度的Ti3Si0.8Al0.4C1.95层间固溶体陶瓷块体材料,研究了合成温度对产物纯度的影响,测试分析了制备材料的相组成及显微结构,测试了制备材料的密度、抗弯强度及电阻率等特性.结果表明,适当的热压烧结温度为1550 ℃左右,偏高或偏低都导致TiC及Ti5Si3等杂相的生成;微观结构为典型的板状晶,晶粒内部的层状结构清晰可见;材料的密度、抗弯强度和电阻率均介于Ti3SiC2和Ti3AlC2两者之间.
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