| MgO/Cu基复合材料耐电弧侵蚀行为研究 |
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| 引用本文： | 周志红,国秀花,李韶林,冯江,杨豫博.MgO/Cu基复合材料耐电弧侵蚀行为研究[J].特种铸造及有色合金,2021(2):210-214. |
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| 作者姓名： | 周志红 国秀花 李韶林 冯江 杨豫博 |
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| 作者单位： | 河南科技大学材料科学与工程学院;河南省有色金属材料科学与加工技术重点实验室 |
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| 基金项目： | 中国博士后科学基金资助项目(2018M632769,2020T130172);河南省高等学校青年骨干教师培养计划资助项目(2018GGJS045)。 |
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| 摘 要： | 采用放电等离子烧结法(SPS)制备了纳米级MgO陶瓷颗粒增强铜基复合材料(MgO/Cu复合材料),重点研究了MgO颗粒含量对其耐电弧侵蚀性能的影响,阐述了MgO颗粒在电接触过程中的耐电弧侵蚀机理。结果表明,随着MgO颗粒体积分数增加,MgO/Cu复合材料的耐电弧侵蚀性能逐渐提高,当MgO颗粒体积分数为5%时,MgO/Cu复合材料的总体质量损耗和燃弧能量均达到最低值。研究分析表明,高熔点的MgO颗粒有助于改善MgO/Cu复合材料的力学性能和耐电弧侵蚀性能。电弧侵蚀过程中,高熔点MgO颗粒的存在提高了液相铜基体的熔池粘度,减少了电弧喷溅,从而提高了MgO/Cu复合材料的耐电弧侵蚀性能。
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| 关 键 词： | MgO/Cu复合材料 电弧侵蚀 燃弧能量 质量损耗 |
Arc Erosion Behavior of MgO/Cu Composite |
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| Zhou Zhihong,Guo Xiuhua,Li Shaolin,Feng Jiang,Yang Yubo.Arc Erosion Behavior of MgO/Cu Composite[J].Special Casting & Nonferrous Alloys,2021(2):210-214. |
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| Authors: | Zhou Zhihong Guo Xiuhua Li Shaolin Feng Jiang Yang Yubo |
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| Affiliation: | (School of Material Science and Engineering,Henan University of Science and Technology;Key Laboratory of Materials Science&Processing Technology for Non-ferrous Metals of Henan) |
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| Abstract: | MgO/Cu composites with different MgO contents were prepared by spark plasma sintering(SPS)with nano MgO particles as reinforcing phase.The effects of MgO particles content on arc erosion resistance of MgO/Cu composites were emphatically investigated,of which the arc erosion resistance mechanism was analyzed.Experimental results reveal that the arc erosion resistance of MgO/Cu composites is enhanced with the increase of volume fraction of MgO particles.When volume fraction of MgO particles is 5%,the total mass loss and arc energy of MgO/Cu composites reach the minimum value.The analysis indicates that MgO particles with high melting point is contributed to enhancing the mechanical properties and arc erosion resistance of MgO/Cu composites.During the process of arc erosion,the existence of MgO particles with high melting point can improve the molten pool viscosity of liquid copper matrix and reduce arc splashing,thus improving the arc erosion resistance of MgO/Cu composites. |
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| Keywords: | MgO/Cu Composite Arc Erosion Arc Energy Mass Loss |
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