Cu/TiBN电接触材料的导电性及抗电弧侵蚀机理
Electrical Conductivity and Arc Erosion Resistance of New Type Cu/TiBN Electrical Contact Materials
张秋涛 1刘双宇 1陆萍 2刘梦冉 1刘学然 3张福隆 1Vasilieva Tatiana Mikhailovna4
作者信息
- 1. 盐城工学院机械工程学院,江苏盐城 224051
- 2. 盐城工学院汽车工程学院,江苏盐城 224051
- 3. 盐城工学院材料科学与工程学院,江苏盐城 224051
- 4. 莫斯科物理技术学院,俄罗斯莫斯科 141700
- 折叠
摘要
采用渗硼烧结法合成了一种新型TiBN粉体材料,它兼有陶瓷性和金属性,电阻率为2.6×10-3Ω·cm.以TiBN和TiN为增强相,采用粉末冶金法制备了 Cu/TiBN和Cu/TiN电接触材料,研究了不同含量TiBN和TiN的电接触材料的微观结构和物理性能.结果表明,与TiN相比,TiBN增强相能明显改善Cu基电接触材料的导电性能、抗氧化性能、硬度和抗电弧侵蚀性能.当含量为5％(质量分数)时,Cu/TiBN电接触材料的抗电弧侵蚀能力最好,质量损失仅为1.5 mg.电弧侵蚀时,在Cu/TiBN表面生成TixOy、B2O3和N2等产物,这些产物能明显改善Cu/TiBN电接触材料的抗电弧侵蚀能力.新开发的Cu/TiBN电接触材料具有优异的物理性能和抗电弧侵蚀性能,在电接触行业中拥有广阔的应用前景.
Abstract
A new type of TiBN powder material was synthesized by boronizing sintering method,which was both ceramic and metallic,with a resistivity of 2.6×10-3 Ω·cm.Cu/TiBN and Cu/TiN electrical contact materials were prepared by powder metallurgy using TiBN and TiN as reinforced phases,respectively.The microstructure and physical properties of electrical contact materials with different contents of TiBN and TiN were investigated.The results demonstrate that compared with TiN reinforced phase,the TiBN reinforced phase can significantly improve the electrical conductivity,oxidation resistance,hardness,and arc erosion resistance of Cu-based electrical contact materials.When the content(mass fraction)of TiBN is 5％,the arc erosion resistance of Cu/TiBN is the best,and the mass loss is only 1.5 mg.During arc erosion,products such as TixOy,B2O3 and N2 form on the surface of Cu/TiBN.These products can significantly improve the arc erosion resistance of Cu/TiBN electrical contact materials.The newly developed Cu/TiBN electrical contact materials have excellent mechanical properties and resistance to arc erosion,and have a broad application prospect in the electrical contact industry.
关键词
TiBN导电陶瓷/Cu/TiBN电接触材料/粉末冶金法/抗电弧侵蚀Key words
TiBN conductive ceramics/Cu/TiBN electrical contact materials/powder metallurgy method/anti-arc erosion引用本文复制引用
基金项目
盐城工学院校级科研项目(XJR2020033)
江苏省"双创人才"项目(JSSCRC2021545)
出版年
2024
NETL
NSTL
万方数据