Investigation of current-carrying tribological properties and mechanisms of in-situ 2TiB2/Cu-3B composite

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL Tribology International Pub Date : 2025-07-01 Epub Date: 2025-02-25 DOI:10.1016/j.triboint.2025.110612

Tian Yang , Fei Cao , Yihui Jiang , Yanfang Wang , Pengtao Li , Wei Zhou , Xingde Zhang , Di Huang , Shuhua Liang

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Abstract

A novel 2TiB₂/Cu-3B composite was fabricated via in-situ reactive casting technology, and its current-carrying tribological properties and wear mechanisms under sliding electrical contact conditions were systematically investigated. The synergistic effect between the anti-friction B phase and wear-resistant TiB₂ particles significantly enhanced the wear resistance of the composites. Compared with 2TiB₂/Cu composite, the coefficient of friction and wear rate of the 2TiB₂/Cu-3B composite decreased by 63 % and 89 %, respectively. The dual-phase reinforcements ensured efficient current transmission while minimizing friction. The anti-friction layer regenerated during friction, while the uniform distribution of wear-resistant phases prevented overheating and delamination. Based on these synergistic mechanisms, 2TiB₂/Cu-3B composite exhibits excellent current-carrying and wear resistance properties, providing valuable insights for designing current-carrying materials in electrical contact applications.

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原位2TiB2/Cu-3B复合材料载流摩擦学性能及机理研究

采用原位反应铸造技术制备了新型2TiB2/Cu-3B复合材料，系统研究了该材料在滑动电接触条件下的载流摩擦学性能和磨损机理。抗磨B相与耐磨TiB2颗粒之间的协同作用显著提高了复合材料的耐磨性。与2TiB2/Cu复合材料相比，2TiB2/Cu- 3b复合材料的摩擦系数和磨损率分别降低了63 %和89 %。双相加强确保有效的电流传输，同时最大限度地减少摩擦。摩擦过程中抗磨层再生，而耐磨相的均匀分布防止了过热和分层。基于这些协同机制，2TiB2/Cu-3B复合材料表现出优异的载流和耐磨性，为设计电接触应用中的载流材料提供了有价值的见解。

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.