Influence of Y2O3 addition amount on the microstructure and wide-temperature range tribological properties of wear-resistant and friction-reducing titanium-based coatings

IF 6.1 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-09-07 DOI:10.1016/j.surfcoat.2025.132657

Zhiqiang Zhang , Xinyu Yao , Xuhui Pei , Yin Du , Zhuo Chen , Ziming Yu , Haifeng Wang , Wei Zhou

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引用次数: 0

Abstract

This study fabricated Ti6Al4V/NiCr-Cr₃C₂/Ni-MoS₂/Y₂O₃ composite coatings via laser cladding technology, systematically investigating the effects of Y₂O₃ content (0–8 wt%) on microstructure and tribological properties across a wide temperature range (25–800 °C). Combining first-principles calculations with experimental characterization, we demonstrated that Y₂O₃ addition significantly improved coating formation quality, suppressed crack generation, and refined grain structure. The coatings primarily consisted of TiC, Ti₂S, Ti₂Ni, TiS₃, Y₂O₃ and β-Ti matrix. Results revealed that the 4 wt% Y₂O₃ coating exhibited optimal comprehensive performance: the room-temperature coefficient of friction decreased to 0.39 with a 23.1 % reduction in wear rate compared to the substrate, while at 800 °C the wear rate was merely 0.64 % of its room-temperature value with further significantly reduced coefficient of friction. First-principles calculations elucidated the strengthening mechanisms of TiC and Ti₂S as well as the self-lubricating characteristics of TiS₃, providing theoretical foundations for coating performance optimization. This research offers valuable insights for designing wear-resistant and friction-reducing coatings in aerospace applications.

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Y2O3添加量对钛基耐磨减摩涂层组织和宽温摩擦性能的影响

本研究通过激光熔覆技术制备了Ti6Al4V/NiCr-Cr3C2/Ni-MoS2/Y2O3复合涂层，系统地研究了Y2O3含量（0-8 wt%）在宽温度范围（25-800°C）下对微观组织和摩擦学性能的影响。结合第一性原理计算和实验表征，我们证明了Y2O3的加入显著改善了涂层的形成质量，抑制了裂纹的产生，并改善了晶粒结构。涂层主要由TiC、Ti2S、Ti2Ni、TiS3、Y2O3和β-Ti基体组成。结果表明，4 wt% Y2O3涂层表现出最佳的综合性能：与基材相比，室温摩擦系数降至0.39，磨损率降低23.1%，而在800℃时，磨损率仅为其室温值的0.64%，摩擦系数进一步显著降低。第一性原理计算阐明了TiC和Ti2S的强化机理以及TiS3的自润滑特性，为涂层性能优化提供了理论基础。这项研究为设计航空航天应用中的耐磨和减摩擦涂层提供了有价值的见解。

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

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.