多粒径TiB<sub>2</sub>/Cu复合材料耐电弧侵蚀行为

国秀花; 林焕然; 宋克兴; 王旭; 张祥峰; 冯江

doi:10.13801/j.cnki.fhclxb.20200217.001

多粒径TiB₂/Cu复合材料耐电弧侵蚀行为

doi: 10.13801/j.cnki.fhclxb.20200217.001

国秀花^{1, 2, 3},
林焕然¹,
宋克兴^{1, 2, 3, ,},
王旭¹,
张祥峰¹,
冯江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(51605146; U1502274); 河南省高等学校青年骨干教师培养计划项目(2018GGJS045); 中国博士后基金(2018M632769); 河南省杰出人才创新基金(182101510003)

详细信息

通讯作者:
宋克兴，男，教授，博导，研究方向为高性能铜合金及先进制备加工技术　E-mail：kxsong@haust.edu.cn

中图分类号: TB331; TG146.1⁺1
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- 被引次数: 0
出版历程
- 收稿日期: 2019-11-06
- 录用日期: 2020-01-09
- 网络出版日期: 2020-02-18
- 刊出日期: 2020-10-15

Arc erosion behavior of multi-particle TiB₂/Cu composite

GUO Xiuhua^{1, 2, 3},
LIN Huanran¹,
SONG Kexing^{1, 2, 3
, ,},
WANG Xu¹,
ZHANG Xiangfeng¹,
FENG Jiang¹

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.
Key Laboratory of Materials Science & Processing Technology for Non-ferrous Metals of Henan, Luoyang 471023, China

摘要

摘要: 采用粉末冶金工艺制备了不同配比的多粒径(2 μm+10 μm+50 μm) TiB₂/Cu复合材料。通过JF04C触点材料测试系统对多粒径TiB₂/Cu复合材料进行耐电弧侵蚀性能试验，研究(2 μm+10 μm+50 μm) TiB₂颗粒质量比分别为1∶1∶1、1∶1∶3、1∶3∶1、3∶1∶1时，TiB₂/Cu复合材料的耐电弧侵蚀性能及电弧侵蚀形貌变化规律，探究多粒径配比对TiB₂/Cu复合材料表层耐电弧侵蚀行为的影响。结果表明：当(2 μm+10 μm+50 μm) TiB₂颗粒质量比为1∶1∶1时，TiB₂/Cu复合材料相对密度和导电率最高，分别为99.1%和87.1%IACS。当(2 μm+10 μm+50 μm) TiB₂颗粒质量比为1∶1∶1和1∶3∶1时，TiB₂/Cu复合材料的组织均匀性较好，电弧侵蚀后材料损失相同，材料转移量最少。其中，质量比为1∶3∶1时，TiB₂/Cu复合材料平均燃弧能量最低，且燃弧时间和燃弧能量最稳定。研究表明，这与复合材料的综合物理性能密切相关。在颗粒增强Cu基复合材料设计过程中，引入合适配比的多粒径TiB₂颗粒有助于提高TiB₂/Cu复合材料的密度、导电率等综合物理性能。电弧侵蚀过程中，不同粒径的TiB₂颗粒相互协同作用，有助于提高TiB₂/Cu复合材料的耐电弧侵蚀性能和服役稳定性。
- 粉末冶金 /
- 多粒径 /
- TiB₂/Cu复合材料 /
- 电弧侵蚀 /
- 材料转移
Abstract: TiB₂/Cu composites with multi-particle (2 μm+10 μm+50 μm) were prepared by powder metallurgy. The arc erosion resistance of multi-particle TiB₂/Cu composites was tested in a JF04C contact material testing system. The arc erosion resistance and morphology of TiB₂/Cu composites were studied when the mass ratios of TiB₂ particles (2 μm+10 μm+50 μm) were 1∶1∶1, 1∶1∶3, 1∶3∶1 and 3∶1∶1, respectively. The results show that when the (2 μm+10 μm+50 μm) TiB₂ particle mass ratio is 1∶1∶1, the TiB₂/Cu composite has the highest relative density and conductivity of 99.1% and 87.1%IACS, respectively. When the (2 m+10 m+50 m) TiB₂ particle mass ratio are 1∶1∶1 and 1∶3∶1, the structure uniformity of the TiB₂/Cu composites is better, the material loss is the same after arc erosion, and the material loss of the TiB₂/Cu composite is lower than the composites with other ratios. When the ratio is 1∶3∶1, the TiB₂/Cu composite has the lowest average arc energy, and the arc duration and arc energy are the most stable. It can be concluded that the introduction of appropriate multi-particle TiB₂ particles into Cu matrix can improve the density and electrical conductivity of the TiB₂/Cu composites. In the process of arc erosion, TiB₂ particles with different sizes cooperate with each other, which is helpful to enhance the arc erosion resistance and service stability of the TiB₂/Cu composites.
- powder metallurgy /
- multi-particle /
- TiB₂/Cu composites /
- arc erosion /
- material transfer

HTML全文

图 1 纯Cu粉和TiB₂颗粒粉末的原始微观形貌

Figure 1. Morphologies of pure Cu powder and TiB₂ particle powders

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图 2 JF04C触点材料测试系统

Figure 2. JF04C contact material testing system

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图 3 多粒径TiB₂/Cu复合材料的显微组织

Figure 3. Microstructures of TiB₂/Cu composites with multi-particle sizes

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图 4 24 V、15 A条件下多粒径不同质量比TiB₂/Cu复合材料燃弧时间(a)和燃弧能量(b)与接触次数的关系曲线

Figure 4. Relation curves of arc time (a) and arc energy (b) and contact times of TiB₂/Cu composites with different particle sizes and mass ratios under 24 V and 15 A condition

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图 5 不同质量比TiB₂颗粒平均燃弧时间、平均燃弧能量与接触压力的关系

Figure 5. Relationship between average arc time, average arc energy and contact pressure of TiB₂ particles with different particle mass ratios

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图 6 不同质量比TiB₂/Cu复合材料电蚀后阳极、阴极及总的质量变化

Figure 6. Anode, cathode and total mass change of TiB₂/Cu composites with different mass ratios after arc erosion

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图 7 不同质量比TiB₂/Cu复合材料在24 V、15 A条件下电弧侵蚀形貌

Figure 7. Arc erosion morphologies of TiB₂/Cu composites with different mass ratios at 24 V and 15 A

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图 8 (2 μm+10 μm+50 μm)TiB₂/Cu复合材料质量比为1∶1∶3时在24 V、15 A条件下电弧侵蚀形貌

Figure 8. Arc erosion morphologies of (2 μm+10 μm+50 μm) TiB₂/Cu composites with mass ratio of 1∶1∶3 at 24 V and 15 A

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表 1 纯Cu与多粒径TiB₂/Cu复合材料的综合性能

Table 1. Comprehensive properties of pure Cu and multi-particle TiB₂/Cu composites

Particle size of TiB₂/μm	Relative density/%	Electrical conductivity/%IACS	Hardness/HBW
2+10+50(1∶1∶1)	99.1	87.1±1.2	67.8±0.4
2+10+50(1∶3∶1)	98.4	84.7±1.5	69.2±1.2
2+10+50(1∶1∶3)	98.2	83.9±1.7	72.0±0.6
2+10+50(3∶1∶1)	97.9	83.2±0.8	66.8±0.4
Cu	99.5	96.6±0.6	55.7±0.4

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