| 镀钨碳纳米管增强镁基复合材料的摩擦磨损性能研究 |
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| 引用本文： | 吴琼,贾成厂,聂俊辉.镀钨碳纳米管增强镁基复合材料的摩擦磨损性能研究[J].粉末冶金技术,2018,36(6):423-428. |
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| 作者姓名： | 吴琼 贾成厂 聂俊辉 |
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| 作者单位： | 1.中国航空制造技术研究院，北京 100024 |
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| 摘 要： | 以羰基钨为前驱体, 采用金属有机化学气相沉积在碳纳米管表面镀覆了金属钨, 利用磁力搅拌混粉和放电等离子体烧结制备了镀钨碳纳米管增强镁基复合材料((W-CNTs) /Mg), 研究了W-CNTs质量分数对复合材料摩擦磨损性能的影响。结果表明: W-CNTs的加入可对镁基体起到降低摩擦系数、减少磨损量的作用; 当W-CNTs质量分数为0.75%时, 复合材料的摩擦系数和磨损量均最小, 分别较纯镁降低了43.7%和71.4%;增加或降低复合材料中的W-CNTs质量分数, 材料的摩擦系数、磨损量均将增大。(W-CNTs) /Mg复合材料的摩擦磨损性能高于CNTs/Mg复合材料。
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| 关 键 词： | 碳纳米管 镀钨 镁基复合材料 摩擦 磨损 |
| 收稿时间： | 2018-06-11 |
Friction and wear properties of magnesium matrix composites reinforced by tungsten-coated carbon nanotubes |
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| Affiliation: | 1.AVIC Manufacturing Technology Institute, Beijing 100024, China2.School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China3.General Research Institute for Nonferrous Metals, Beijing 100088, China |
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| Abstract: | The tungsten were coated on the surface of carbon nanotubes (CNTs) by metal organic chemical vapor deposition (MOCVD) using hexacarbonyltungsten as the precursor, and the magnesium matrix composites reinforced by tungsten-coated carbon nanotubes ((W-CNTs) /Mg) were prepared by the combination of magnetic stirring (MS) and spark plasma sintering (SPS) processes. The influences of W-CNTs contents by mass on friction and wear properties of the composites were studied. The results show that, W-CNTs can effectively reduce the friction coefficient and wear loss of magnesium matrix. Compared with the pure magnesium, the friction coefficient and wear loss of 0.75% (W-CNTs) /Mg composites by mass are reduced by 43.7% and 71.4%, respectively; both the friction coefficient and the wear loss of Mg composites increase by increasing or decreasing W-CNTs contents. (W-CNTs) /Mg composites have the higher friction and wear properties than those of CNTs/Mg composites. |
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