Effect of TiB2 particle size on the material transfer behaviour of Cu-TiB2 composites

被引：31

作者：

Guo, Xiuhua ^{[1
,2
]}

Song, Kexing ^{[1
,2
]}

Xu, Wang ^{[1
,2
]}

Li, Guohui ^{[1
,2
]}

Zhang, Zaoli ^{[3
]}

机构：

[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Peoples R China

[2] Collaborat Innovat Ctr Nonferrous Met, Luoyang 471023, Peoples R China

[3] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Leoben, Austria

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2020年 / 36卷 / 15期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Cu-5; 8vol; -%TiB(2)composite; TiB(2)particles size; arc energy; arc erosion; material transfer; ELECTRICAL WEAR PERFORMANCE; METAL-MATRIX COMPOSITES; THERMAL-CONDUCTIVITY; MICROSTRUCTURE; RESISTIVITY; RESISTANCE;

D O I：

10.1080/02670836.2020.1821964

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cu-5.8vol.-%TiB(2)composites reinforced with different sized TiB(2)particles were prepared by spark plasma sintering (SPS). The arc erosion resistance was examined using a JF04C electrical contact instrument. The results indicate that the TiB(2)particle size and contact currents have important effects on the material transfer mode. Both lower mass loss and relative mass transfer was observed in the Cu-5.8vol.-%TiB(2)composites reinforced with fine TiB(2)particles (10 um, 30 um) compared to those with coarse TiB(2)particles (70 um, 110 um). The investigation and analysis of the microstructure and arc erosion mechanism show uniform distribution of fine TiB(2)particles in the copper matrix can significantly improve the viscosity of the molten pool and decrease the splashing of molten Cu.

引用

页码：1685 / 1694

页数：10

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