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| CNTs/AgCuNi复合材料的制备及力学性能 |
| Preparation and mechanical properties of CNTs/AgCuNi composite materials |
| Received:May 20, 2024 |
| DOI： |
| 中文关键词: 金属基复合材料 碳纳米管 放电等离子烧结 力学性能 |
| 英文关键词: metal matrix composites carbon nanotubes spark plasma sintering mechanical properties |
| 基金项目:专家工作站项目(YSZJGZZ-2021080)；云南省重点研发计划(202203ZA080001-3)；云南省科技计划项目(YPML-2022050224)；云南省重大科技专项计划(202302AB080008-3) |
| Author Name | Affiliation | | SONG Yin | Kunming Instituteof Precious Metals, Kunming 650106, China | | HONG Yu | Kunming Instituteof Precious Metals, Kunming 650106, China | | ZHANG Yu | Kunming Guiyan New Materials Technology Co.Ltd., Kunming 650106, China | | LIU Yichun | Kunming University of Science and Technology, Kunming 650093, China | | CHEN Dengquan | Kunming Guiyan New Materials Technology Co.Ltd., Kunming 650106, China | | GAO Fei | CSSC Jiujiang Jingda Technology Co.Ltd., Jiujiang 332008, Jiangxi, China | | YUAN Jie | CSSC Jiujiang Jingda Technology Co.Ltd., Jiujiang 332008, Jiangxi, China | | WU Haijun | Kunming Guiyan New Materials Technology Co.Ltd., Kunming 650106, China |
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| 中文摘要: |
| 银基复合材料具有高强度、高模数、低延展性、高耐磨性、低热膨胀等优异性能，在电接触领域中迅速发展。本研究采用机械合金化法将CNTs与AgCuNi合金粉末混粉、球磨，将复合粉末通过放电等离子(SPS)压制烧结后制备出CNTs/AgCuNi银基复合材料。研究了添加不同体积分数CNTs及不同压制烧结温度制备的复合材料组织结构、力学性能。结果表明，添加2%的CNTs的复合材料在700 ℃烧结后，材料致密度达到98.93%、硬度(HV0.2)为101.07，综合性能较好。 |
| 英文摘要: |
| Silver-based composites have excellent properties such as high strength, high modulus, low ductility, high wear resistance and low thermal expansion, and have developed rapidly in the field of electrical contact. In this study, Using the mechanical alloying method, carbon nanotubes (CNTs) were homogeneously mixed and ball-milled with AgCuNi alloy powder. The resulting composite powders were subsequently sintered using Spark Plasma Sintering (SPS) to fabricate CNTs/AgCuNi composite materials. This study primarily focused on analyzing the microstructure and mechanical properties of the composite prepared with adding CNTs with varying volume fractions and sintering temperatures. The results revealed that the optimal sintering temperature was 700 °C. Furthermore, compared to contents of 1 vol% and 3 vol%, the addition of 2 vol% CNTs resulted in the composite material exhibiting superior mechanical properties, achieving a density of 98.93% and a hardness (HV0.2) of 101.07, significantly enhancing the overall performance of the composite material. |
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