摘要
为研究复合材料的分散性能、高温稳定性及相变行为问题,研究碳纳米管增强陶瓷基复合材料的高温抗氧化性能。采用酸性液体处理碳纳米管,使用处理后的碳纳米管结合氧化铝陶瓷基材料制备出粉末材料,通过烧结将该粉末制备成碳纳米管增强陶瓷基复合材料块体。分析不同碳纳米管用量下该复合材料的氧化质量增长值及热失重率,通过微观分析确定烧结温度与烧蚀距离变化下,该复合材料的高温抗氧化性能。试验结果显示,碳纳米管用量为35%时,该复合材料的氧化质量增长值,以及热失重率均较低,高温抗氧化性能较好;烧结温度为1 500℃时,该复合材料内部较为紧密,不易出现氧化;烧蚀距离较近时,会导致该材料高温抗氧化性能被破坏,因此需要注意该材料的使用环境。
To study the dispersion performance,high-temperature stability and phase transformation behavior of composite materials,the high-temperature oxidation resistance of carbon nanotube-reinforced ceramic matrix composites was investigated.Carbon nanotubes were treated with acidic liquid.The treated carbon nanotubes were combined with alumina ceramic matrix materials to prepare powder materials,and the powder was sintered to form carbon nanotube-reinforced ceramic matrix composite material blocks.The increase in oxidation mass and the thermogravimetric loss rate of the composite material under different amounts of carbon nanotubes were analyzed.The high-temperature oxidation resistance of the composite material under the changes of sintering temperature and ablation distance was determined through microscopic analysis.The test results showed that when the dosage of carbon nanotubes is 35%,the increase value of oxidation mass and the thermogravimetric loss rate of the composite material are both relatively low,and the high-temperature oxidation resistance performance is good.When the sintering temperature is 1500℃,the interior of the composite material is relatively compact and oxidation is not likely to occur.When the ablation distance is relatively close,it will lead to the destruction of the high-temperature oxidation resistance of this material.Therefore,attention should be paid to the usage environment of this material.
作者
孙燕
牛莉
张新建
SUN Yan;NIU Li;ZHANG Xinjian(School of Mechanical Engineering,Anhui Mechanical and Electrical Vocational and Technical College,Wuhu 241002,China)
出处
《吉林化工学院学报》
2025年第3期38-43,共6页
Journal of Jilin Institute of Chemical Technology
基金
安徽高校自然科学研究项目:基于隧道势垒间跳跃机理的羧基碳纳米管/聚乙二醇复合导电薄膜的合成与气敏特性研究(2022AH052359)
2022年度安徽省质量工程:增材制造产业产教融合实训基地(2022cjrh012)
2023年度安徽省质量工程:“产教融合”背景下高职院校增材制造技术专业素养与能力本位教育融合研究与实践(2023jyxm1332)
关键词
碳纳米管
抗氧化
烧结温度
氧化铝
陶瓷基
热失重率
carbon nanotubes
anti-oxidation
sintering temperature
alumina
ceramic base
thermogravimetric ratio
