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Effects of CNT addition on mechanical properties, electric conductivity and oxidation resistance of Al_2O_3-TiC composite

机译:碳纳米管的添加对Al_2O_3-TiC复合材料力学性能,电导率和抗氧化性能的影响

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Effects of carbon nanotubes (CNT) addition on mechanical properties, electric conductivity and oxidation resistance of CNT/Al_2O_3-TiC composite were investigated. It was found that flexural strength, Young's modulus and fracture toughness of the composites were improved by addition of more than 2 vol%-CNT. In the composites with more than 3 vol%-CNT, the oxidation resistance of the composite was degraded. In comparison with Al_2O_3-26vol%TiC sample as TiC particle-percolated sample, the Al_2O_3-12vol%TiC-3vol%CNT sample, which is not TiC particle-percolated sample, shows almost the same mechanical properties and electric conductivity, and also shows thinner oxidized region after oxidation at 1200℃ due to less TiC in the composite.
机译:研究了碳纳米管(CNT)添加对CNT / Al_2O_3-TiC复合材料的力学性能,电导率和抗氧化性的影响。发现通过添加大于2vol%的CNT,复合材料的弯曲强度,杨氏模量和断裂韧性得到改善。在具有大于3vol%的CNT的复合物中,复合物的抗氧化性下降。与作为TiC颗粒渗滤样品的Al_2O_3-26vol%TiC样品相比,不是TiC颗粒渗滤样品的Al_2O_3-12vol%TiC-3vol%CNT样品具有几乎相同的机械性能和电导率,并且显示由于复合材料中的TiC较少,在1200℃氧化后氧化区域变薄。

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