| 放电等离子烧结制备镍掺杂石墨-铜复合材料组织性能研究 |
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| 引用本文： | 孙科,刘锦平,王靖. 放电等离子烧结制备镍掺杂石墨-铜复合材料组织性能研究[J]. 有色金属科学与工程, 2020, 11(3): 65-72. DOI: 10.13264/j.cnki.ysjskx.2020.03.009 |
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| 作者姓名： | 孙科 刘锦平 王靖 |
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| 作者单位： | 江西理工大学材料冶金化学学部，江西 赣州 341000 |
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| 摘 要： | 通过超声波分散结合行星球磨对复合粉末进行混料,利用放电等离子烧结技术(SPS)制备镍掺杂石墨-铜复合材料。运用扫描电子显微镜(SEM)、X射线衍射(XRD)、硬度计和摩擦磨损试验机等方法,研究了不同镍掺杂含量对石墨-铜复合材料组织和力学性能的影响。结果表明:通过该工艺制备石墨-铜复合材料石墨均匀分散于铜基体,并与铜基体形成良好的界面结合。随着镍掺杂含量的增加,石墨-铜复合材料相对密度和硬度逐渐增加。当镍掺杂含量(指质量分数)为7.0%时,石墨-铜复合材料相对密度为95.2%,HV0.5硬度为53.4,摩擦系数相对较低,磨损表面较光滑,此时综合性能较好。
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| 关 键 词： | 石墨 铜基 镍掺杂 放电等离子烧结 摩擦磨损 |
| 收稿时间： | 2020-03-16 |
Study on the microstructure and properties of nickel-doped graphite-copper composites prepared by spark plasma sintering |
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| SUN Ke,LIU Jinping,WANG Jing. Study on the microstructure and properties of nickel-doped graphite-copper composites prepared by spark plasma sintering[J]. Nonferrous Metals Science and Engineering, 2020, 11(3): 65-72. DOI: 10.13264/j.cnki.ysjskx.2020.03.009 |
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| Authors: | SUN Ke LIU Jinping WANG Jing |
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| Affiliation: | Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China |
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| Abstract: | In this paper, the copper powder and graphite power were mixed by ultrasonic dispersion and planetary ball milling, and nickel-doped graphite-copper composites were prepared by spark plasma sintering technology (SPS). The effects of different contents of nickel on the structure and mechanical properties of graphite-copper composites were studied by scanning electron microscope (SEM), X-ray diffraction (XRD), hardness tester, friction and wear tester. The results showed that the graphite was evenly dispersed in the copper matrix and formed a good interface with it. As the content of nickel increased, the relative density and hardness of graphite-copper composites gradually increased. When it reached 7.0 %, the overall performance of the graphite-copper composites proved to be the best with a relative density of 95.2%, a hardness HV0.5 of 53.4, a relatively low friction coefficient and a smooth wear surface. |
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| Keywords: | graphite copper matrix nickel doping SPS friction and wear |
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