不同TiB<sub>2</sub>颗粒粒径的TiB<sub>2</sub>/Cu复合材料耐电弧侵蚀行为

国秀花; 宋克兴; 李国辉; 冯江; 龙飞

doi:10.13801/j.cnki.fhclxb.20181011.001

不同TiB₂颗粒粒径的TiB₂/Cu复合材料耐电弧侵蚀行为

doi: 10.13801/j.cnki.fhclxb.20181011.001

国秀花^1,2,3,
宋克兴^1,2,3,,
李国辉¹,
冯江¹,
龙飞¹

1.
河南科技大学材料科学与工程学院, 洛阳 471023;
2.
有色金属共性技术河南省协同创新中心, 洛阳 471023;
3.
河南省有色金属材料科学与加工技术重点实验室, 洛阳 471023

基金项目: 国家自然科学基金（U1502274；51605146）；河南省科技攻关计划（国际合作项目）（172102410046）；河南省创新科技团队（C20150014）；中国博士后科学基金资助项目（2018M632769）

详细信息

通讯作者:
宋克兴,博士,教授,研究方向为高性能铜基材料的研制与开发E-mail:kxsong@mail.haust.edu.cn

中图分类号: TG146.1⁺1
计量
- 文章访问数: 806
- PDF下载量: 125
- 被引次数: 0
出版历程
- 收稿日期: 2018-07-16
- 刊出日期: 2019-07-15

Arc erosion behavior of TiB₂/Cu composites reinforced withdifferent sized TiB₂ particles

GUO Xiuhua^1,2,3,
SONG Kexing^{1,2,3
,},
LI Guohui¹,
FENG Jiang¹,
LONG Fei¹

1.
School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China;
2.
Collaborative Innovation Center of Nonferrous Metals, Luoyang 471023, China;
3.
Henan Key Laboratory of Non-Ferrous Materials Science and Processing Technology, Luoyang 471023, China

摘要

摘要: 采用放电等离子烧结法（SPS）制备了不同TiB₂颗粒粒径的3wt% TiB₂/Cu复合材料，研究了3wt% TiB₂/Cu复合材料致密度、导电率、硬度和耐电弧侵蚀性能随TiB₂颗粒粒径的变化规律，重点分析了不同TiB₂颗粒粒径的3wt% TiB₂/Cu复合材料耐电弧侵蚀行为。结果表明：3wt% TiB₂/Cu复合材料致密度和硬度随TiB₂颗粒粒径的增大而略有降低；TiB₂颗粒粒径越小，TiB₂/Cu复合材料的综合性能越好。随着TiB₂颗粒粒径的增大，3wt% TiB₂/Cu复合材料耐蚀稳定性降低，3wt% TiB₂/Cu阴极材料的损耗量明显增加；当TiB₂颗粒粒径为10 μm时，3wt% TiB₂/Cu复合材料的耐电弧侵蚀性能最佳。电弧蚀形貌观察表明：不同TiB₂颗粒粒径的3wt% TiB₂/Cu复合材料经电弧侵蚀后，3wt% TiB₂/Cu复合材料均由阴极向阳极发生转移；随着TiB₂颗粒粒径的增大，阴极质量损耗逐渐增加，触头表面电弧侵蚀面积增加；而在Cu基体中引入较小的TiB₂颗粒，有利于减弱电接触实验过程中TiB₂/Cu复合材料的喷溅现象。
- TiB₂/Cu /
- 复合材料 /
- TiB₂颗粒粒径 /
- 燃弧能量 /
- 电弧侵蚀 /
- 材料转移
Abstract: The 3wt%TiB₂/Cu composites reinforced with different sized TiB₂ particles were prepared by spark plasma sintering (SPS). The variations of density, electrical conductivity, hardness and arc resistance of 3wt%TiB₂/Cu composites with the TiB₂ particle size were studied, and arc erosion behavior of the TiB₂/Cu composites reinforced with different sized TiB₂ particles were emphatically analyzed. The results show that the hardness and density of 3wt%TiB₂/Cu composite decrease gently with increasing of TiB₂ particles size. The comprehensive performance of 3wt%TiB₂/Cu composite with fine TiB₂ particle size is better. With the increase of TiB₂ particles size, the stability of the arc erosion resistance of 3wt%TiB₂/Cu composites decreases, and the mass loss of 3wt%TiB₂/Cu composites cathode material increases. The arc erosion resistance of 3wt%TiB₂/Cu composite reinforced with 10 μm TiB₂ particles is optimal. Observations on arc erosion morphology show that 3wt%TiB₂/Cu composites are mostly transferred from cathodes to anodes, and the mass loss of cathode and arc erosion area on the contact surface increase gradually with increasing of the TiB₂ particle size, which shows that the fine TiB₂ particles in Cu matrix can reduce the splashing of molten copper during arc erosion.
- TiB₂/Cu /
- composites /
- TiB₂ particles size /
- arc energy /
- arc erosion /
- material transfer