Effects of CNTs Contents on the Mechanical Properties of CNTs/Al Composites

Xie Kun; Wang Yu; Song Tengfei; Liu Yang; Cai Bin

doi:10.15980/j.tzzz.2018.09.019

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Effects of CNTs Contents on the Mechanical Properties of CNTs/Al Composites
Vol. 38, Issue 9, Pages: 994-997(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.09.019

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[1]谢昆,王裕,宋腾飞,刘洋,蔡彬.CNTs含量对CNTs/Al复合材料力学性能的影响[J].特种铸造及有色合金,2018,38(09):994-997.

Xie Kun, Wang Yu, Song Tengfei, et al. Effects of CNTs Contents on the Mechanical Properties of CNTs/Al Composites. [J]. Special Casting & Nonferrous Alloys 38(9):994-997(2018)
[1]谢昆,王裕,宋腾飞,刘洋,蔡彬.CNTs含量对CNTs/Al复合材料力学性能的影响[J].特种铸造及有色合金,2018,38(09):994-997. DOI： 10.15980/j.tzzz.2018.09.019.

Xie Kun, Wang Yu, Song Tengfei, et al. Effects of CNTs Contents on the Mechanical Properties of CNTs/Al Composites. [J]. Special Casting & Nonferrous Alloys 38(9):994-997(2018) DOI： 10.15980/j.tzzz.2018.09.019.

摘要

用羧基化方法对CNTs（碳纳米管）进行预处理

增强其分散性。通过粉末冶金法制备了CNTs含量为0

.0%的铝基复合材料

并对热挤压前后的力学性能进行了测试。结果表明

复合材料的力学性能均随CNTs含量的增加而增加

CNTs含量为1.0%的铝基复合材料的抗拉强度可达158 MPa

比同样条件下不含CNTs的纯铝抗拉强度（113 MPa）高40%。当CNTs含量在1.0%以下时

CNTs/Al复合材料的硬度、屈服强度和抗拉强度均与CNTs含量的平方根成正比

这表明其主要强化机制应是CNTs的弥散强化。

Abstract

Carboxylation was used to enhance the dispersion of CNTs.The 0

.0% CNTs were added to Al matrix by powder metallurgy method.The mechanical properties of as-sintered and as-hot extruded CNTs/Al composites were tested at room temperature.The results show that the mechanical properties of CNTs/Al composites are increased with increasing in CNTs content.The tensile strength of CNTs/Al composites with 1.0% CNTs reaches 158 MPa

which is 40% higher than that of pure Al（113 MPa）prepared by the same conditions.For CNT content less than 1.0%

the hardness

yield strength and tensile strength of CNTs/Al are all proportional to the square roots of the CNTs contents

indicating that the main strengthening mechanism is characteried by the CNTs dispersion strengthening.