宋明,李双,谢志鹏

• 1:景德镇陶瓷学院
• 2:清华大学材料学院新型陶瓷与精细工艺国家重点实验室
• 3:山东理工大学资源与环境工程学院

摘要(Abstract)：

采用放电等离子烧结制备了GNP(石墨烯)/3Y-TZP复合陶瓷材料。研究了石墨烯含量对GNP/3Y-TZP复合材料微观结构与性能的影响规律。结果表明,石墨烯经过高温高压烧结后仍保持原有结构,并且复合材料断口处有明显的石墨烯片层拔出;石墨烯增强相与氧化锆基体之间形成了适中的界面结合强度。当石墨烯含量增加至1%时,材料断裂韧性从7.4 MPa·m~(1/2)提高到8.6 MPa·m~(1/2);当石墨烯含量达到1.5%时,过多石墨烯导致复合陶瓷中孔隙增加,使复合材料韧性下降。对GNP/3Y-TZP复合材料进行老化试验表明,石墨烯引入可有效抑制GNP/3Y-TZP复合材料中四方氧化锆到单斜氧化锆的相变。

关键词(KeyWords)： 放电等离子烧结;石墨烯;复合陶瓷;强韧化

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(51232004)

作者(Author): 宋明,李双,谢志鹏

DOI: 10.13289/j.issn.1009-6264.2015.12.001

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