Enhanced mechanical behavior and fabrication of silicon carbide particles covered by in-situ carbon nanotube reinforced 6061 aluminum matrix composites
Enhanced mechanical behavior and fabrication of silicon carbide particles covered by in-situ carbon nanotube reinforced 6061 aluminum matrix composites
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原位碳纳米管增强 6061 铝基复合材料覆盖碳化硅颗粒的增强机械性能和制造
DOI：
10.1016/j.matdes.2016.06.021
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发表时间：
2016-10
影响因子：
8.4
通讯作者：
Di Zhang
中科院分区：
文献类型：
--
作者：
Shisheng Li;Yishi Su;Xinhai Zhu;Huiling Jin;Qiubao Ouyang;Di Zhang
碳纳米管（CNT）由于其优异的性能，在复合材料增强方面显示出巨大的潜力。然而，CNT在制造过程中倾向于聚集在一起或形成聚集体，将CNT有效地混合到金属基质中是一项具有挑战性的任务。在这项研究中，提出了一种新的方法来分散碳纳米管到铝基体中，通过使用碳化硅颗粒（SiCp）作为“载体”。通过化学气相沉积法在微米SiCp表面生长CNT，形成纳米/微米混杂增强体SiCp（CNT），再通过常规粉末冶金工艺将其均匀分布在6061铝基体中。采用13 μm、7 μm、2.5 μm三种尺寸的SiCp（CNT），研究了SiCp尺寸对SiCp（CNT）形貌、复合材料显微结构和力学性能的影响。当SiCp尺寸为7 μm时，拉伸性能的改善最为显著，其塑性为8.5%，杨氏模量为98 GPa，拉伸强度为428 MPa。这种显著的强化效果归因于SiCp表面上CNT的存在增加了“冲孔区”的尺寸。
Due to its outstanding performance, carbon nanotube (CNT) has shown great potentials as an enhancement material for composites. However, CNT tends to cluster together or form aggregates during fabrication process, it is a challenging task to effectively mix CNT into a metal matrix. In this study, a novel approach is proposed to disperse CNT into aluminum matrix by using silicon carbide particles (SiCp) as a “carrier”. Through chemical vapor deposition, CNT is grown on the surface of micro-sized SiCp forming a nano/micro-sized hybrid reinforcement, which is named as SiCp(CNT), and then they will be homogeneously distributed in the 6061Al matrix by conventional powder metallurgy process. Three types of SiCp(CNT), with SiCp sizes being 13 μm, 7 μm, 2.5 μm, were used for finding out the effect of SiCp size on the morphology of SiCp(CNT), the microstructure and mechanical properties of the obtained composite. The most significant improvement in tensile properties can be found for the case with the SiCp size to be 7 μm, which has ductility of 8.5%, Young's modulus of 98 GPa, and tensile strength of 428 MPa. This remarkable strengthening effect is attributed to the increase of the “punched zone” size with the presence of CNT on the SiCp surface.
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影响因子：
8.4
作者：
Ahmadi, Azin;Toroghinejad, Mohammad Reza;Najafizadeh, Abbas
通讯作者：
Najafizadeh, Abbas
影响因子：
9.1
作者：
Dai, LH;Ling, Z;Bai, YL
通讯作者：
Bai, YL
DOI：
10.1016/j.msea.2011.10.022
发表时间：
2011-12
影响因子：
6.4
作者：
Xizhou Kai;Zihan Li;Wenjie Zhang;G. Fan;Lin Jiang;Weihong Lu;Dabing Zhang
通讯作者：
Xizhou Kai;Zihan Li;Wenjie Zhang;G. Fan;Lin Jiang;Weihong Lu;Dabing Zhang
DOI：
10.1016/j.msea.2010.11.028
发表时间：
2011-01
影响因子：
6.4
作者：
Zhangwei Wang;M. Song;Chao Sun;Yuehui He
通讯作者：
Zhangwei Wang;M. Song;Chao Sun;Yuehui He
影响因子：
9.4
作者：
Kouzeli, M;Mortensen, A
通讯作者：
Mortensen, A