原位碳纳米管/铝基复合材料的制备与力学性能

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Abstract The carbon nanotube/aluminum (CNT/Al) composites were fabricated by flake powder metallurgy, and investigated the mechanical properties. First, flaky CNT/Al composite powders were prepared by in-situ growth of CNTs on the submicron sized Al flakes with the polymer pyrolysis chemical vapor deposition (CVD) methods. Then the flaky CNT/Al composite powders were compacted, sintered and extruded to fabricate dense bulk CNT/Al composites. The results show that, Compared with the Al matrices, the tensile strength and modulus of the 1.5%CNT/Al composites are increased by 18.5% and 23.7%, while the tensile strength and modulus of the 3%CNT/Al composites are increased by 31.4% and 74.1%. However, their tensile elongations decrease to 4.96% and 1.5%, respectively, which may be owning to the grain refinement and dislocation strengthening mechanisms.

Key words： carbon nanotubes (CNTs) aluminum matrix composites chemical vapor deposition flake powder metallurgy mechanical property

Received: 25 June 2018 Published: 12 July 2019

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	WANG Lei
	YIN Hua
	XU Run
	TAN Zhanqiu
	FAN Genlian
	LI Zhiqiang
	ZHANG Di

Cite this article:

WANG Lei,YIN Hua,XU Run, et al. Preparation and mechanical properties of in-situ carbon nanotube/aluminum composites[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(1): 63-68.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I1/63

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