Ablation resistance and current-carrying friction performance of WMoCu alloy with different Mo contents

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-11-24 DOI:10.1016/j.triboint.2024.110413

Xu Wang , Kexing Song , Jiang Feng , Jiandong Xing , Tao Hang , Yiming Zhang

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引用次数: 0

Abstract

W85Cu15 alloys with different Mo contents of 0, 5, 10 and 15 wt% were fabricated by an infiltration method. The microstructure, comprehensive properties, arc erosion resistance and current-carrying friction properties of WMoCu alloys were studied. The results show that a WMo solid solution has formed between the W phase and the Mo phase, and a clear core-shell structure was found around the W particles in the WMoCu alloy, which improves the interface bonding between Cu and W, thereby enhances the comprehensive properties of the WMoCu alloy. The tensile strength of WMoCu alloy at elevated temperature(600 °C) is 23.8 %∼57.4 % higher than that of WCu alloy. This is due to the good interfacial bonding between the phases in the WMoCu alloy and the high thermal stability of the WMo transition layer. The addition of the element Mo changes the arc erosion behavior, which is related to the fibrous W/Mo phases in the WMoCu alloy. This improves the arc ablation resistance of the WMoCu alloys, prevents concentrated arc erosion, and leaves no ablation pits and microcracks on the erosion surface. Compared with W85Cu15 alloy, the friction coefficient of WMoCu alloy decreases by 2.4 %∼26.1 %, and W70Mo15Cu15 alloy has the lowest wear rate, which is 50 % lower than that of W85Cu15 alloy.

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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.