多粒径TiB2/Cu复合材料耐电弧侵蚀行为 |
| |
引用本文: | 国秀花,林焕然,宋克兴,王旭,张祥峰,冯江. 多粒径TiB2/Cu复合材料耐电弧侵蚀行为[J]. 复合材料学报, 2020, 37(10): 2526-2533. DOI: 10.13801/j.cnki.fhclxb.20200217.001 |
| |
作者姓名: | 国秀花 林焕然 宋克兴 王旭 张祥峰 冯江 |
| |
作者单位: | 1.河南科技大学 材料科学与工程学院,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) |
| |
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。
|
关 键 词: | 粉末冶金 多粒径 TiB2/Cu复合材料 电弧侵蚀 材料转移 |
收稿时间: | 2019-11-06 |
Arc erosion behavior of multi-particle TiB2/Cu composite |
| |
Affiliation: | 1.School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China2.Collaborative Innovation Center of Nonferrous Metals, Luoyang 471023, China3.Key Laboratory of Materials Science & Processing Technology for Non-ferrous Metals of Henan, Luoyang 471023, China |
| |
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. |
| |
Keywords: | |
|
| 点击此处可从《复合材料学报》浏览原始摘要信息 |
|
点击此处可从《复合材料学报》下载免费的PDF全文 |
|