Fabrication of superhydrophobic AlCrN coatings and their tribological properties under dry and starved lubrication conditions

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-03-20 DOI:10.1016/j.vacuum.2025.114276

Jialiang Guo , Chengdi Li , Quanbin Du , Yuhuai Liu

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引用次数: 0

Abstract

Hard coatings are essential for enhancing wear resistance and oxidation resistance in mechanical components, extending their service life. This study combines laser surface texturing (LST), cathodic arc evaporation (CAE), and 1H,1H,2H,2H-perfluorooctanetrichlorosilane (FOTS) chemical modification to fabricate superhydrophobic AlCrN coatings on TC4 titanium alloy. LST was used to create periodic line- and mesh-arrayed textures with scanning intervals of 150–450 μm, followed by CAE deposition and FOTS modification. Smaller scanning intervals enhanced wettability, achieving water contact angles up to 157.6° and water sliding angles as low as 5.4°. For laser-textured surfaces with a 150 μm interval, FOTS modification reduced the coefficient of friction by 10 % and 64 % under dry and starved-water lubrication, respectively. Under starved-oil lubrication, surface texturing and FOTS modification showed no significant advantage over polished surfaces. This study highlights the synergistic potential of surface texturing and chemical modification to improve coating functionality and durability, offering insights for diverse engineering applications.

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超疏水 AlCrN 涂层的制作及其在干燥和饥饿润滑条件下的摩擦学特性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.