原位碳纳米管/铝基复合材料的制备与力学性能

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摘要采用片状粉末冶金技术制备碳纳米管/铝(CNT/Al)复合材料,并研究其力学性能。首先,通过聚合物热解化学气相沉积法(PP-CVD)在微纳铝片表面原位生长碳纳米管制备CNT/Al片状复合粉末,随后对该片状复合粉末进行冷压成形、烧结致密化和挤压变形加工等,制备致密的CNT/Al复合材料块体。实验结果表明,相比铝基体,所制备的1.5%CNT/Al复合材料抗拉强度和模量分别提高了18.5%和23.7%,3.0%CNT/Al复合材料抗拉强度和模量分别提高了31.4 %和74.1%,但由于铝基体的细晶强化和位错强化作用,使其塑性分别下降至4.96%和1.5%。

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	王雷
	尹华
	徐润
	谭占秋
	范根莲
	李志强
	张荻

关键词 ：碳纳米管, 铝基复合材料, 化学气相沉积, 片状粉末冶金, 力学性能

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

收稿日期: 2018-06-25 出版日期: 2019-07-12

ZTFLH:

TB331

基金资助:国家自然科学基金资助项目(51671130,51871149); 国家重点研发计划项目(2016YFB1200506,2017YFB1201105); 上海市自然科学基金资助项目(15JC1402100,14DZ2261200)

通讯作者: 李志强,博士,研究员。电话：021-54745834;E-mail: lizhq@sjtu.edu.cn

引用本文:

王雷, 尹华, 徐润, 谭占秋, 范根莲, 李志强, 张荻. 原位碳纳米管/铝基复合材料的制备与力学性能[J]. 粉末冶金材料科学与工程, 2019, 24(1): 63-68.
WANG Lei, YIN Hua, XU Run, TAN Zhanqiu, FAN Genlian, LI Zhiqiang, ZHANG Di. Preparation and mechanical properties of in-situ carbon nanotube/aluminum composites. Materials Science and Engineering of Powder Metallurgy, 2019, 24(1): 63-68.

链接本文:

http://pmbjb.csu.edu.cn/CN/ 或 http://pmbjb.csu.edu.cn/CN/Y2019/V24/I1/63

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