Tribology International最新文献

Hydrogen-bonding reinforced robust hydrogels for load-bearing and sustained lubrication 氢键增强坚固的水凝胶承载和持续润滑

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-24 DOI: 10.1016/j.triboint.2025.111233

Ruiyao Ma , Yanru Liu , Huijuan Lin , Ling-Bao Xing , Hui Liu , Shuanhong Ma , Feng Zhou

引用次数: 0

Enhancing friction reduction and wear resistance in CuZn-graphite self-lubricating composites via yttria(Y₂O₃) incorporation 通过钇（Y₂O₃）的掺入提高cuzn -石墨自润滑复合材料的减摩性和耐磨性

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-24 DOI: 10.1016/j.triboint.2025.111227

Xin Zhang , Wenxiao Wang , Kun Pei , Liuchen Wu , Yi Tao , Xiao Kang

{"title":"Enhancing friction reduction and wear resistance in CuZn-graphite self-lubricating composites via yttria(Y₂O₃) incorporation","authors":"Xin Zhang , Wenxiao Wang , Kun Pei , Liuchen Wu , Yi Tao , Xiao Kang","doi":"10.1016/j.triboint.2025.111227","DOIUrl":"10.1016/j.triboint.2025.111227","url":null,"abstract":"<div><div>In this paper, CuZn-Graphite-Y₂O₃ composites were prepared using powder metallurgy techniques, and the effect of Y₂O₃ content on their tribological behavior was investigated. The CuZn-Graphite-1.0 wt%Y₂O₃ composite (YP3) exhibited optimal friction reduction and wear resistance through the synergy between graphite and Y₂O₃, achieving a volumetric wear rate of 3.61 × 10<sup>−6</sup> mm<sup>3</sup>/(N·m) and an average coefficient of friction (COF) of 0.131. Raman spectroscopy confirmed that varying Y₂O₃ content nonlinearly influenced the evolution of carbon structures at the friction interface. Grain refinement and dislocation pinning synergistically strengthened YP3, improving wear resistance via enhanced hardness (87.03 HV) and fracture toughness (2.273 <span><math><mrow><mi>MPa</mi><mo>⋅</mo><msqrt><mrow><mi>m</mi></mrow></msqrt></mrow></math></span>). Y₂O₃ improved lubricating film continuity by modifying graphite interfacial properties, effectively separating friction counterparts during sliding.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111227"},"PeriodicalIF":6.1,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic effects of laser texturing and solid lubricants in Cr3C2-NiCr-(B2O3/Bi2O3) composite coating for enhanced tribological properties at 25 °C and 800 °C 激光织构和固体润滑剂对Cr3C2-NiCr-(B2O3/Bi2O3)复合涂层25℃和800℃摩擦性能的协同作用

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-23 DOI: 10.1016/j.triboint.2025.111220

Yuhang Zhang , Shuangjian Li , Yaoning Sun , Xiujuan Fan , Chunming Deng , Chao Wang , Yifei Xv , Yizhe Lv

{"title":"Synergistic effects of laser texturing and solid lubricants in Cr3C2-NiCr-(B2O3/Bi2O3) composite coating for enhanced tribological properties at 25 °C and 800 °C","authors":"Yuhang Zhang , Shuangjian Li , Yaoning Sun , Xiujuan Fan , Chunming Deng , Chao Wang , Yifei Xv , Yizhe Lv","doi":"10.1016/j.triboint.2025.111220","DOIUrl":"10.1016/j.triboint.2025.111220","url":null,"abstract":"<div><div>Cermet-based coatings exhibit excellent high-temperature wear resistance. However, their high-temperature lubrication performance is insufficient, which is likely to cause the friction pair materials to be severely worn. Herein, a novel Cr₃C₂-NiCr-(B₂O₃/Bi₂O₃) composite coating was developed by thermal spraying, laser texturing and high-temperature vacuum impregnation composite processes. Its tribological properties, elemental migration and synergistic lubrication mechanism were systematically investigated. The results show that the average friction coefficients of the composite coating are 0.17 and 0.08 at 25 ℃ and 800 ℃, respectively, representing reduction of 79 % and 83 % compared to the Cr₃C₂-NiCr coating, and exhibits excellent self-lubricating performance. Through in-depth analysis, a synergistic lubrication mechanism based on the migration of B/Bi elements is proposed: At elevated temperatures, B₂O₃ optimizes the friction interface as a low-viscosity glassy phase, while Bi₂O₃ reduces the shear strength via molten lubrication and the formation of Bi nanocrystalline films. B₂O₃/B₂O₃ composite lubricant provide excellent fluid lubrication at tribological interface. The mechanism originates from the dynamic coupling of low melting point migration, interfacial reaction and gradient film formation. B element enhances the interfacial bonding and thermal stability of the film through oxygen vacancy migration, while Bi element forms a plastic lubrication film via reduction and grain boundary segregation. The composite coating integrates long-term lubrication and anti-wear properties at high temperatures. These findings provide an innovative solution for the service life extension design of high-temperature moving components.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111220"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Evolution of tribolayer in GH2132/GH4169 fretting wear at elevated temperatures 高温下GH2132/GH4169微动磨损摩擦层的演变

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-23 DOI: 10.1016/j.triboint.2025.111225

Tian He , Minhao Zhu , Hongyang Li , Youhong Long , Jinfang Peng , Jianhua Liu , Zhiqiang Feng

{"title":"Evolution of tribolayer in GH2132/GH4169 fretting wear at elevated temperatures","authors":"Tian He , Minhao Zhu , Hongyang Li , Youhong Long , Jinfang Peng , Jianhua Liu , Zhiqiang Feng","doi":"10.1016/j.triboint.2025.111225","DOIUrl":"10.1016/j.triboint.2025.111225","url":null,"abstract":"<div><div>To investigate the development of the tribolayer in the GH2132/GH4169 superalloy pair, a systematic tangential fretting wear interruption test was conducted to analyze the microstructure, chemical composition, formation mechanism, and evolutionary characteristics of the tribolayer at 600℃. The results reveal that in the early stages of fretting, severe plastic deformation of material in the contact area and dislocation accumulation within the grains promote dynamic recrystallization and crack initiation, ultimately resulting in significant adhesive wear. As the test progresses, tribo-sintering of oxidized debris and continuous grain refinement give rise to a dense nanocrystalline tribolayer with enhanced hardness. This tribolayer, which is composed of nanocrystalline metal oxides, unoxidized nanograins, and amorphous phases, forms at the contact interface and serves as a mechanically and chemically robust barrier. It suppresses metal-to-metal contact, slows oxidation, and significantly reduces the wear rate, thereby stabilizing the worn surface.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111225"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Mechanistic study of 4H-SiC removal under various scratching speeds using nano-scratching experiments and molecular dynamics simulations 采用纳米刻划实验和分子动力学模拟研究不同刻划速度下4H-SiC去除机理

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-23 DOI: 10.1016/j.triboint.2025.111230

Ming Feng , Zhirui Zhao , Gengzhuo Li , Hanqiang Wu , Linhe Sun , Yufeng Xue , Jingfeng Yang , Youliang Wang , Yongbo Wu

{"title":"Mechanistic study of 4H-SiC removal under various scratching speeds using nano-scratching experiments and molecular dynamics simulations","authors":"Ming Feng , Zhirui Zhao , Gengzhuo Li , Hanqiang Wu , Linhe Sun , Yufeng Xue , Jingfeng Yang , Youliang Wang , Yongbo Wu","doi":"10.1016/j.triboint.2025.111230","DOIUrl":"10.1016/j.triboint.2025.111230","url":null,"abstract":"<div><div>Silicon carbide (SiC), as a representative third-generation wide-bandgap semiconductor, exhibits excellent thermal, electrical, and mechanical properties, making it widely used in high-power electronics, renewable energy systems, and optoelectronic applications. While its inherent high hardness and brittleness lead to subsurface damage during ultra-precision grinding, affecting both manufacturing cost and device reliability. To investigate how scratching speed affects material removal and subsurface damage in 4H-SiC, a combined approach utilizing atomic force microscopy (AFM) scratching and molecular dynamics (MD) simulations was employed. Experimental results revealed that higher scratching speeds significantly decreased friction forces and reduced crystal defects, leading to a less damaged subsurface structure. MD simulations further revealed that scratching speed strongly influences the evolution of subsurface damage. At lower speeds, longer contact durations promote dislocation slip and propagation, forming deeper damage layers. In contrast, at higher speeds, plastic deformation is less developed and the damage is confined to near-surface regions. Additionally, the spatial distribution of von Mises stress was found to correlate closely with dislocation evolution, indicating that stress-driven mechanisms play a critical role in subsurface damage formation. This study provides new insights into the nanoscale damage mechanisms of 4H-SiC and offers theoretical guidance for its high-efficiency, low-damage machining.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111230"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Adhesive layer formation and its dual role in tribological performance and surface integrity of Ti-6Al-4V: Implications for the machining process Ti-6Al-4V粘接层的形成及其对摩擦学性能和表面完整性的双重作用：对加工工艺的影响

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-23 DOI: 10.1016/j.triboint.2025.111228

Nan Xu , Dongze Wang , Chris Taylor , Jack Secker , Greg de Boer , Harvey Thompson , Nikil Kapur , Ardian Morina

{"title":"Adhesive layer formation and its dual role in tribological performance and surface integrity of Ti-6Al-4V: Implications for the machining process","authors":"Nan Xu , Dongze Wang , Chris Taylor , Jack Secker , Greg de Boer , Harvey Thompson , Nikil Kapur , Ardian Morina","doi":"10.1016/j.triboint.2025.111228","DOIUrl":"10.1016/j.triboint.2025.111228","url":null,"abstract":"<div><div>The poor machinability of Ti-6Al-4V (Ti64), characterized by adhesive and abrasive wear, low thermal conductivity, and high chemical reactivity, continues to hinder efficient manufacturing. Among these challenges, adhesive layer formation on tool flank faces remains poorly understood despite its critical influence on tool degradation and workpiece surface integrity. To address this, this study investigates the tribological behavior of WC/Co-Ti64 pin-on-disc sliding contacts under dry and minimum quantity lubrication (MQL) conditions through both experimental and numerical approaches. Experimental results show that thick, stable, and intact adhesive layers transferred from Ti64 discs was formed on WC/Co pin surfaces under dry and low MQL flowrate conditions. These layers are associated with reduced friction coefficients and lower disc wear but simultaneously contribute to compromised surface integrity. Comparative boundary element method (BEM) simulations with 316 L stainless steel reveal that the lower elastic modulus of Ti64 adhesive layers significantly reduces nominal contact pressure and subsurface von Mises stress, lowering friction coefficients and enhancing mechanical stability of adhesive layer. However, the accompanying increase in surface roughness intensifies local stress concentrations and result in thicker work-hardened layers on Ti64 disc, which align well with BEM simulation results. Conversely, high MQL flowrate inhibited adhesive layer formation, leading to higher friction and wear but producing smoother surfaces and thinner work-hardened layer. The findings offer new mechanistic insights into complex interplay between adhesive layer, lubrication and surface topography, and present the first direct evidence of the dual role of adhesive layer: reducing friction and tool-side wear but compromising workpiece surface integrity.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111228"},"PeriodicalIF":6.1,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145157843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microwave absorption and fast-response self-lubricating coating based on the PAO6@SiO2@Ppy microcapsules 基于PAO6@SiO2@Ppy微胶囊的微波吸收快速响应自润滑涂层

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-22 DOI: 10.1016/j.triboint.2025.111229

Yanliang Shen , Chen Zhao , Xingwei Wang , Qiangliang Yu , Feng Zhou

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Insight into the micro-mechanisms of wear in oxide dispersion strengthened Ni-rich high entropy alloy 氧化物弥散强化富镍高熵合金磨损微观机理的探讨

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-20 DOI: 10.1016/j.triboint.2025.111224

Manashi Sabat, Md Akif Faridi, Sudhansu Maharana, D.K.V.D. Prasad, Tapas Laha

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A quasi-dynamic model considering bending moment due to contact between bearing and shaft 考虑轴承与轴接触弯矩的准动态模型

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-20 DOI: 10.1016/j.triboint.2025.111196

Shuaiyu Pang , Wenzhong Wang , Yunlong Wang , Haibo Zhang

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Uncertainty quantification on the leakage and dynamic characteristics of a straight-through labyrinth seal 直通式迷宫式密封泄漏与动态特性的不确定量化

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-09-20 DOI: 10.1016/j.triboint.2025.111188

Tianhao Wang, Zhigang Li, Jun Li

{"title":"Uncertainty quantification on the leakage and dynamic characteristics of a straight-through labyrinth seal","authors":"Tianhao Wang, Zhigang Li, Jun Li","doi":"10.1016/j.triboint.2025.111188","DOIUrl":"10.1016/j.triboint.2025.111188","url":null,"abstract":"<div><div>An efficient uncertainty quantification (UQ) framework based on the polynomial chaos expansion (PCE) is developed in this study to assess the sealing capability and rotordynamic performance of annular gas seals under uncertain conditions. Considering geometric deviations in seal clearance and cavity depth, as well as operational fluctuations in inlet pressure and inlet swirl velocity, uncertainty analysis and global sensitivity analysis are conducted on the leakage and dynamic characteristics of a straight-through labyrinth seal using the present UQ framework. The order convergence analysis demonstrates that the third-order PCE provides a sufficiently accurate surrogate model for uncertainty propagation in the stochastic system of seal leakage and dynamic characteristics in this study. Under the influence of stochastic inputs, the statistical mean of seal leakage closely matches the design value, while the probability of a deviation exceeding 10 % reaches 36.6 %. The statistical mean of effective stiffness modestly exceeds its design value, with greater variability observed in the first cavity and near the seal clearances. Additionally, the statistical mean of effective damping falls below the design value and possesses larger standard deviations at lower frequencies, which primarily originate from upstream cavities. Global sensitivity analysis reveals that the deviation in seal clearance is the dominant factor affecting seal leakage and effective stiffness, while the fluctuation in inlet swirl velocity primarily contributes to uncertainties in effective damping and crossover frequency. Furthermore, the influence mechanisms of dominant contributors to the uncertainties in seal performance are explored by analyzing the detailed flow fields and cavity reaction force phasors, and the effects of deviations in critical stochastic inputs are quantitatively assessed.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111188"},"PeriodicalIF":6.1,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0