| 引用本文: | 王利民,何卫,蔡炜,姚辉.碳纳米管与铝合金基体材料的混合工艺研究[J].材料科学与工艺,2015,23(6):104-108.DOI:10.11951/j.issn.1005-0299.20150619. |
| WANG Limin,HE Wei,CAI Wei,YAO Hui.Research on mixing procedure of carbon nanotubes and aluminum alloy powder[J].Materials Science and Technology,2015,23(6):104-108.DOI:10.11951/j.issn.1005-0299.20150619. |
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| 摘要: |
| 为改善碳纳米管在铝合金基体中的分散性和发挥其增强作用,分别采用湿混、球磨以及湿混后球磨的方式将碳纳米管与铝合金粉末进行混合,再经真空烧结制备出碳纳米管增强铝合金复合材料.不同混合工艺的对比试验结果表明:碳纳米管于液相环境下被均匀分散并吸附于铝合金颗粒表面,但在烧结过程中易再次发生团聚；而较长时间的机械球磨会对碳纳米管结构造成一定程度的破坏.相比下,液相分散与机械球磨结合的方式提高了碳纳米管的分散程度和缩短了球磨时间,碳纳米管增强铝合金材料(3% CNTs/5083Al)的抗拉强度达620 MPa. |
| 关键词: 碳纳米管增强铝合金复合材料 湿混 机械球磨 真空烧结 |
| DOI：10.11951/j.issn.1005-0299.20150619 |
| 分类号:TB331 |
| 基金项目:国家电网公司科技项目(WNZ 121-0022). |
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| Research on mixing procedure of carbon nanotubes and aluminum alloy powder |
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WANG Limin, HE Wei, CAI Wei, YAO Hui
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(Wuhan NARI Limited Liability Company, State Grid Electric Power Research Institute, Wuhan 430074, China)
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| Abstract: |
| In order to improve the dispersion of carbon-nanotubes (CNTs) in the aluminum alloy matrix and its enhancement role, the CNTs reinforced aluminum alloy composites were fabricated by sintering under vacuum with the mixture powders of CNTs and aluminum alloy, which were prepared respectively via wet-mixing, ball-milling and ball-milling with wet-mixed powder. The results indicated that CNTs were well-dispersed in a liquid environment and adhered to the surface of aluminum particles, but tended to re-aggregation under sintering. While ball-mixing with an extended duration, CNTs suffered serious damage. By combing the liquid phase dispersion and a short time mechanical milling, CNTs were efficiently distributed into the aluminum matrix, and the tensile strength of the as-prepared 3% CNTs/5083Al composite reached 620 MPa. |
| Key words: carbon-nanotube reinforced aluminum alloy composites wet-mixing ball-milling vacuum sintering |
