| 掺杂纳米SnO_2-Al_2O_3/Cu新型电触头复合材料的制备及耐磨性能 |
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| 引用本文： | 陆东梅,杨瑞霞,王清周.掺杂纳米SnO_2-Al_2O_3/Cu新型电触头复合材料的制备及耐磨性能[J].复合材料学报,2016,33(12):2815-2823. |
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| 作者姓名： | 陆东梅 杨瑞霞 王清周 |
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| 作者单位： | 1. 河北工业大学 理学院, 天津 300401;
2. 河北工业大学 电子信息工程学院, 天津 300401;
3. 河北工业大学 材料科学与工程学院, 天津 300401 |
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| 基金项目： | 中国博士后科学基金(2014M551008)，河北省自然科学基金(2014Z02184) |
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| 摘 要： | 为满足低压电器对于高品质电触头材料的迫切需求,同时保护稀缺资源、降低电触头成本,采用粉末冶金工艺制备了掺杂纳米SnO_2-Al_2O_3/Cu新型电触头复合材料,并对其电导率、硬度及耐磨性能进行了研究。结果表明:复烧与冷变形工艺均可显著提高复合材料的烧结质量、密度、电导率与硬度。随着纳米Al_2O_3及掺杂纳米SnO_2颗粒的总含量增加,掺杂纳米SnO_2-Al_2O_3/Cu电触头复合材料的硬度与耐磨性能表现出了相同的变化规律,即先升高后降低。当纳米Al_2O_3及掺杂纳米SnO_2颗粒的总含量为0.80wt%时,复合材料的硬度与耐磨性能均达到最优;而当纳米Al_2O_3及掺杂纳米SnO_2颗粒的总含量保持0.80wt%不变时,随纳米Al_2O_3颗粒的含量增加,掺杂纳米SnO_2-Al_2O_3/Cu电触头复合材料的硬度与耐磨性能改善;当掺杂纳米SnO_2颗粒的含量为0时,复合材料的耐磨性能达到了最优。因此较之掺杂纳米SnO_2颗粒,纳米Al_2O_3颗粒对掺杂纳米SnO_2-Al_2O_3/Cu电触头复合材料的耐磨性能有更显著的提高作用。
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| 关 键 词： | 复合材料 电触头 粉末冶金 微观形貌 力学测试 耐磨性能 |
| 收稿时间： | 2015-11-20 |
Fabrication and wear resistances of doped nano-SnO2-Al2O3/Cu novel electrical contact composites |
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| LU Dongmei,YANG Ruixia,WANG Qingzhou.Fabrication and wear resistances of doped nano-SnO2-Al2O3/Cu novel electrical contact composites[J].Acta Materiae Compositae Sinica,2016,33(12):2815-2823. |
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| Authors: | LU Dongmei YANG Ruixia WANG Qingzhou |
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| Affiliation: | 1. School of Science, Hebei University of Technology, Tianjin 300401, China;
2. School of Electronic and Information Engineering, Hebei University of Technology, Tianjin 300401, China;
3. School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, China |
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| Abstract: | In order to meet the urgent needs of low-voltage electrical equipment for high quality electrical contact materials, and to protect the scarce resources and reduce the cost of electrical contact at the same time, doped nano-SnO2-Al2O3/Cu novel electrical contact composites were fabricated by using powder metallurgy technique. The electrical conductivity, hardness and wear resistances of them were also investigated. The results show that both of re-sintering and cold deformation processes can improve the sintering quality, density, electrical conductivity as well as hardness of the composites significantly. With the increasing for total content of nano-Al2O3 and doped nano-SnO2 particles, hardness and wear resistances of the doped nano-SnO2-Al2O3/Cu electrical contact composites show the same change rule, which increases firstly and then decreases. When the total content of nano-Al2O3 and doped nano-SnO2 particles is 0.80wt%, both of the hardness and wear resistances of the composites reach the optimum. While when the total content of nano-Al2O3 and doped nano-SnO2 particles remains unchanged at 0.80wt%, with the content of nano-Al2O3 particles increasing, the hardness and wear resistances of the doped nano-SnO2-Al2O3/Cu electrical contact composites enhance. When the content of doped nano-SnO2 particles is 0, the wear resistance of the composite reaches the optimum. Therefore, compared with doped nano-SnO2 particles, the nano-Al2O3 particles have a more significant improving effect on the wear resistance of the doped nano-SnO2-Al2O3/Cu electrical contact composites. |
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| Keywords: | composites electrical contact powder metallurgy micro-morphologies mechanical testing wear resistance |
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