在水冷和脉冲激光条件下大幅提高 AlCoCrFeNiTiWC 高熵合金涂层性能

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-09-27 DOI:10.1016/j.triboint.2024.110273

Zhen Li , Jianwei Dong , Qinglong Wu , Yingzhe Li , Kedong Yu , Zhen Luo

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引用次数: 0

摘要

采用激光熔覆技术制备了铝钴铬铁镍钛WC高熵合金（HEA）涂层，包括连续激光和空气冷却，以及脉冲激光和水冷却。涂层的相结构为 BCC、(Ti,W)C 和 μ 相。水冷脉冲激光涂层中的碳化物和μ相得到了细化，μ相所占比例下降。水冷脉冲激光涂层的耐磨性显著提高，这可能归因于μ相比例的降低、碳化物的细化以及磨损润滑层的形成。水冷脉冲激光增强了涂层表面钝化膜的厚度和均匀性，从而提高了耐腐蚀性。

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Substantial enhancement of AlCoCrFeNiTiWC high-entropy alloy coating performance under water cooling and pulsed laser

AlCoCrFeNiTiWC high-entropy alloy (HEA) coatings were prepared using laser cladding technology with continuous laser and air cooling, as well as pulsed laser with water cooling. The phase structures of the coatings were BCC, (Ti,W)C, and μ phase. The carbides and μ phase in the pulsed laser with water-cooled coating were refined, and the proportion of the μ phase decreased. The wear resistance of the pulsed laser with water-cooled coating significantly increased, which can be attributed to the reduction in the proportion of μ phase, the refinement of carbides, and the formation of a wear lubrication layer. The pulsed laser with water cooling enhanced the thickness and uniformity of the passivation film on the coating surface, thereby improving corrosion resistance.

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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.