Thermal expansion behaviors of aluminum composite reinforced with carbon nanotubes
Thermal expansion behaviors of aluminum composite reinforced with carbon nanotubes
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DOI：
10.1016/j.matlet.2007.11.086
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发表时间：
2008-05
影响因子：
3
通讯作者：
C. Deng;Yibin Ma;Peng Zhang;Xue Xi Zhang;Dongjun Wang
中科院分区：
文献类型：
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作者：
C. Deng;Yibin Ma;Peng Zhang;Xue Xi Zhang;Dongjun Wang
研究了1.0wt.%（质量分数，下同）增强铝基复合材料的热膨胀系数（CTE利用高精度热机械分析仪在25 ~ 400 °C对冷等静压-热挤压工艺制备的多壁碳纳米管（MWNTs）的热机械性能进行了测试，并与相同工艺制备的纯铝和2024铝基体的MWNTs进行了比较。结果表明，由于碳纳米管的引入，复合材料的热膨胀系数相对于纯铝和2024铝基体明显降低。添加1.0wt.%与纯铝和2024铝基体相比，碳纳米管增强金属基复合材料在50 °C时的热膨胀系数分别降低了12%和11%，表明碳纳米管增强金属基复合材料可能是一种有前途的低热膨胀系数材料。
The coefficient of thermal expansion (CTE) of aluminum matrix composite reinforced with 1.0wt.% multi-wall carbon nanotubes (MWNTs) fabricated by cold isostatic pressing and hot squeeze technique was measured between 25 and 400 °C with a high-precision thermomechanical analyzer, and compared with those of pure aluminum and 2024Al matrix fabricated under the same processing. The results show that the CTE of the composite obviously reduces in relation to those of pure aluminum and 2024Al matrix due to the introduction of MWNTs. The addition of 1.0wt.% MWNTs to 2024Al matrix decreases the CTE by as much as 12% and 11% compared with those of pure aluminum and 2024Al matrix at 50 °C, respectively, which indicates that carbon nanotube reinforced metal matrix composite may be a promising materials with low CTE.