| 吴键,邵国森,何代华,陈小红,刘平,张柯.碳纳米管增强铝基复合材料的制备及力学性能研究[J].有色金属材料与工程,2022,43(1):11-17,39. |
| 碳纳米管增强铝基复合材料的制备及力学性能研究 |
| Research on the preparation and mechanical properties of carbon nanotubes reinforced aluminum composites |
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| DOI：10.13258/j.cnki.nmme.2022.01.002 |
| 中文关键词: 碳纳米管 表面改性 铝基复合材料 力学性能 |
| 英文关键词:carbon nanotubes surface modification aluminum-based composite Mechanical properties |
| 基金项目:国家自然科学基金资助项目（51971148） |
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| 摘要点击次数: 2297 |
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| 中文摘要: |
| 利用静电自组装和机械搅拌法相结合的工艺制备得到碳纳米管/铝（carbon nanotubes/ aluminum，CNTs/Al）复合材料粉体并压坯制成预制块。采用搅拌铸造和热轧相结合的工艺制备得到不同碳纳米管（carbon nanotubes，CNTs）含量的CNTs/Al复合材料。通过扫描电子显微镜（scanning electron microscope, SEM）、X射线衍射仪（X-ray diffractometer, XRD）等表征CNTs/Al的微观组织结构，利用拉伸实验机测试力学性能。通过拉曼光谱仪和傅里叶变换红外光谱仪（Fourier transform infrared spectrometer，FT-IR）对试样进行表征后可知，通过酸化处理成功地在CNTs表面引入了含氧官能团。拉伸试验结果表明：CNTs/Al复合材料的抗拉强度随着CNTs含量的增加先提高后降低；当CNTs质量分数增加到0.3%时抗拉强度达到最大值，为193 MPa；CNTs/Al复合材料的伸长率不断降低，但均为韧性断裂。 |
| 英文摘要: |
| Carbon nanotubes/aluminum (CNTs/Al) composite powders were prepared by the combined technology of electrostatic self-assembly and mechanical stirring method, and pressed into preforms. CNTs/Al composites with different carbon nanotubes (CNTs) contents were prepared by the combined technology of stirring casting and hot rolling. The microstructure of CNTs/Al was characterized by scanning electron microscope (SEM) and X-ray diffractometer (XRD), and the mechanical properties were measured by tensile testing machine. After the samples were characterized by Raman spectroscopy and Fourier transform infrared spectrometer（FT-IR）, it can be known that the oxygen-containing functional groups are successfully introduced into the surface of CNTs by acidification. The tensile test results show that the tensile strength of CNTs/Al composites first increases and then decreases with the increase of CNTs content. When the mass fraction of CNTs increases to 0.3%, the tensile strength reaches the maximum value of 193 MPa. The elongations of CNTs/Al composites decrease continuously, but they all show ductile fracture. |
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