| AZ91HP镁合金电沉积Ni-SiO_2纳米复合镀层的显微结构与耐磨性(英文) |
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| 引用本文： | 刘燕,于思荣,刘金丹,韩志武,苑东生. AZ91HP镁合金电沉积Ni-SiO_2纳米复合镀层的显微结构与耐磨性(英文)[J]. 中国有色金属学会会刊, 2011, 0(Z2) |
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| 作者姓名： | 刘燕 于思荣 刘金丹 韩志武 苑东生 |
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| 作者单位： | 吉林大学工程仿生教育部重点实验室;吉林大学材料科学与工程学院; |
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| 基金项目： | Project(50905071)supported by the National Natural Science Foundation of China; Project(20090539)supported by the Program for the Development of Science and Technology of Jilin Province,China; Project(20100471247)supported by the Postdoctoral Science Foundation of China |
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| 摘 要： | 以AZ91HP镁合金为研究对象,以纳米氧化硅为第二相粒子,通过纳米复合电沉积法制备AZ91HP镁合金Ni-SiO2纳米复合镀层。利用扫描电镜观察纳米复合镀层的显微形貌与微观结构,利用显微硬度计测定纳米复合镀层显微硬度,利用M200摩擦磨损试验机测试纳米复合镀层的耐磨性能。结果表明:在AZ91HP镁合金表面获得了结晶均匀、结构致密的Ni-SiO2纳米复合镀层;纳米复合镀层剖面形貌显示纳米复合镀层与镁合金基体结合良好;镀液中纳米颗粒含量为10g/L时,AZ91HP镁合金表面电沉积Ni-SiO2纳米复合镀层的显微硬度最高,最高达HV367;摩擦磨损试验表明纳米复合镀层与镀镍层、镁合金基体相比,耐磨性明显提高,这是由于纳米颗粒的细晶强化和弥散强化所致;纳米复合镀层的磨损机制主要是磨粒磨损,镁合金基体磨损机制为粘着磨损,镀镍层磨损机制为剥层磨损。
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| 关 键 词： | 镁合金 纳米复合镀层 显微结构 耐磨性 |
Microstructure and wear resistance of electrodeposited Ni-SiO_2 nano-composite coatings on AZ91HP magnesium alloy substrate |
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| LIU Yan ,YU Si-rong ,LIU Jin-dan ,HAN Zhi-wu ,YUAN Dong-sheng . Key Laboratory for Bionic Engineering,Ministry of Education,Jilin University,Changchun ,China,. College of Materials Science , Engineering. Microstructure and wear resistance of electrodeposited Ni-SiO_2 nano-composite coatings on AZ91HP magnesium alloy substrate[J]. Transactions of Nonferrous Metals Society of China, 2011, 0(Z2) |
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| Authors: | LIU Yan YU Si-rong LIU Jin-dan HAN Zhi-wu YUAN Dong-sheng . Key Laboratory for Bionic Engineering Ministry of Education Jilin University Changchun China . College of Materials Science Engineering |
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| Affiliation: | LIU Yan 1,YU Si-rong 2,LIU Jin-dan 1,HAN Zhi-wu 1,YUAN Dong-sheng 2 1. Key Laboratory for Bionic Engineering,Ministry of Education,Jilin University,Changchun 130022,China,2. College of Materials Science and Engineering |
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| Abstract: | The Ni-SiO 2 nano-composite coatings were fabricated by electrodeposition on the AZ91HP magnesium alloy surface, in which nano-SiO 2 was chosen as the second-phase particulates. The microstructure was observed by SEM, the microhardness was measured by micro-density tester and the wear resistance was estimated by M 200 type block-on-wheel dry sliding frication and wear tester. The results indicate that the Ni-SiO 2 nano-composite coatings with uniform crystalline, dense structure can be obtained on AZ91HP ma... |
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| Keywords: | magnesium alloy nano-composite coatings microstructure wear resistance |
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