Nano-Y2O3 effects on the electrical contact properties of Al2O3-Cu/35Cr3TiB2 composites

材料科学 复合材料 电接点 复合数 电阻率和电导率 极限抗拉强度 焊接 电弧 烧结 阴极 阳极 电极 化学 物理化学 电气工程 工程类
作者
Zipeng Ma,Meng Zhou,Baohong Tian,Yi Zhang,Heng Li,Xu Li,Jin Zou,Haoyan Hu,Jing Ke,Yong Liu,Alex A. Volinsky
出处
期刊:Materials Characterization [Elsevier BV]
卷期号:207: 113474-113474
标识
DOI:10.1016/j.matchar.2023.113474
摘要

Al2O3-Cu/35Cr3TiB2 and 0.5Y2O3/Al2O3-Cu/35Cr3TiB2 electrical contact composites were prepared by vacuum hot pressing sintering endo-oxidation method. Both composites were over 98% dense with tensile strengths of 395 MPa and 413 MPa and compressive strengths of 839 MPa and 898 MPa, respectively. The TEM results showed that Cr and TiB2 particles along with Al2O3 nanoparticles generated by internal oxidation were uniformly distributed in the Cu matrix. The addition of Y2O3 had almost no negative effects on the electrical conductivity and hardness of the composites. The electrical contact parameters such as arc energy, arc duration, and weld force between pairs of contacts were analyzed. The material transfer direction of both composite contacts was from cathode to anode. The average welding force of the contacts decreased by 24.6% after the addition of Y2O3, and the material transfer and loss decreased by 28.6% and 42% at 35 A current, respectively. The addition of Y2O3 reduced the arc energy and duration by 43.7% and 55.9% at 25 A and 35 A, respectively, and improved the stability of the contacts during disconnect and closure.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
我有一头小毛驴完成签到,获得积分10
刚刚
刚刚
cell发布了新的文献求助10
刚刚
Rondab应助左彦采纳,获得50
刚刚
1秒前
1秒前
byyyy发布了新的文献求助10
1秒前
1秒前
夏沐完成签到,获得积分20
2秒前
细腻海蓝发布了新的文献求助10
2秒前
3秒前
舒适香露发布了新的文献求助10
3秒前
直率青亦发布了新的文献求助10
3秒前
Jasper应助懒羊羊采纳,获得10
3秒前
宫跃然发布了新的文献求助10
4秒前
李大宝发布了新的文献求助10
4秒前
4秒前
4秒前
繁荣的忆文完成签到,获得积分10
5秒前
qaz123发布了新的文献求助10
5秒前
5秒前
6秒前
6秒前
小怪完成签到,获得积分10
7秒前
FashionBoy应助小甑采纳,获得10
7秒前
在水一方应助周游采纳,获得10
7秒前
爆米花应助科研一号采纳,获得10
8秒前
8秒前
8秒前
8秒前
南山无梅落应助chen采纳,获得10
8秒前
嘻嘻完成签到,获得积分10
8秒前
8秒前
8秒前
ldzjiao完成签到 ,获得积分10
9秒前
素直发布了新的文献求助10
9秒前
9秒前
完美世界应助春实秋华采纳,获得10
9秒前
子衿完成签到,获得积分10
9秒前
独孤蚕完成签到,获得积分10
10秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3969322
求助须知:如何正确求助?哪些是违规求助? 3514152
关于积分的说明 11172188
捐赠科研通 3249407
什么是DOI,文献DOI怎么找? 1794832
邀请新用户注册赠送积分活动 875437
科研通“疑难数据库(出版商)”最低求助积分说明 804781