通过热压法制备了陶瓷/石墨复合材料.采用热分析仪考察了复合材料在1400℃~1600℃温度范围内的抗氧化行为;利用扫描电镜分析样品在1400℃和1600℃恒温氧化后的表面形貌.结果表明;陶瓷/石墨复合材料在1400℃氧化时有优良的自愈合抗氧化性能.在1600℃氧化时,对于粘度较高的样品来说,氧化新形成的玻璃膜可以弥补挥发形成的表面孔道,仍能形成均匀的、连续的玻璃膜覆盖在基体表面,从而有效地抑制氧气的进入.
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