Tribology International最新文献

{"title":"Mechanistic modeling and analysis of concrete abrasion patterns under oblique submerged sand-laden jet impingement","authors":"Kang Liu ,&nbsp;Haoran Wang ,&nbsp;Zhigang Wang ,&nbsp;Yongcan Chen ,&nbsp;Hui Xie ,&nbsp;Zhaowei Liu","doi":"10.1016/j.triboint.2025.111138","DOIUrl":"10.1016/j.triboint.2025.111138","url":null,"abstract":"<div><div>This study proposes a two-dimensional mechanistic model to predict concrete abrasion under oblique submerged sand-laden jets, using sand-phase momentum as a key indicator. Improved formulations for velocity and axial concentration account for incomplete particle settling, with validation against published data yielding a mean relative error of 3.20 % and a correlation coefficient of 0.99. The model captures spatial momentum distributions and directional abrasion features across impact angles (20°–90°). Submerged experiments confirmed that abrasion concentrates near the jet axis, with geometry shaped mainly by normal momentum and elongated by tangential momentum. Critical normal momentum thresholds were quantified, revealing a time-dependent exponential decay. Overall, it offers new insights into submerged jet dynamics and robust framework for spatial abrasion prediction.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111138"},"PeriodicalIF":6.1,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095876","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}

{"title":"Thermodynamic framework for characterization of flow-induced corrosion","authors":"K.P. Lijesh,&nbsp;M.M. Khonsari","doi":"10.1016/j.triboint.2025.111131","DOIUrl":"10.1016/j.triboint.2025.111131","url":null,"abstract":"<div><div>Corrosion-induced material degradation is a significant challenge across various industry sectors. The synergistic interaction of corrosion with other degradation mechanisms like wear, fluid motion, and erosion tends to increase its detrimental effects substantially. While the synergy between wear and corrosion in low-carbon steels has been studied, this work focuses on a less-explored interaction: the influence of electrolyte motion induced by non-contact sliding on corrosion degradation. Experimental findings demonstrate that corrosion-induced material degradation is influenced by electrolyte motion induced by the reciprocating movement of sliding pairs in the absence of contact, an effect not previously considered in existing models. Furthermore, an appropriate approach for conducting open circuit potential (OCP) measurements prior to applying the desired voltage in corrosion studies is proposed. Surface analyses using 3D profiling and microscopic analysis confirm variations in material removal and topography between static and dynamic conditions of the electrolyte. To model this synergistic effect, we employ the Degradation Entropy Generation (DEG) theorem developed in accordance with the laws of irreversible thermodynamics. The DEG framework introduces the degradation coefficient <em>B</em>, establishing a relationship between material loss due to corrosion and entropy generation. Experiments with varying overpotential and pin speeds (inducing different electrolyte motions) revealed a consistent linear relationship between material degradation and entropy generation, irrespective of experimental conditions. The findings are supported by the magnified surface images obtained through Scanning Electron Microscopy (SEM) and the elemental composition data acquired from Energy Dispersive X-ray Spectroscopy (EDS) analysis of samples exposed to various corrosion conditions. This outcome highlights that the degradation coefficient <em>B</em> is independent of corrosive conditions and electrolyte motion, which is valuable for modeling corrosion behavior under varying operating conditions and essential for future tribo-wear modeling.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111131"},"PeriodicalIF":6.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913765","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}

{"title":"Tribo-informatics approach for monitoring the coefficient of friction and its fluctuation in sliding contact based on sound and vibration multi-signals","authors":"Zishuai Wu ,&nbsp;Nian Yin ,&nbsp;Wanyu Wang ,&nbsp;Fangfang Zhou ,&nbsp;Ziheng Xu ,&nbsp;Zhinan Zhang","doi":"10.1016/j.triboint.2025.111130","DOIUrl":"10.1016/j.triboint.2025.111130","url":null,"abstract":"<div><div>Monitoring friction interfaces is essential for evaluating system health. However, direct force sensing is often not feasible in real applications. Sound and vibration signals offer an alternative, but their relationship with the coefficient of friction (COF) remains unclear. And most studies focus only on predicting the mean COF and ignore its fluctuation characteristics. In this study, a multi-source acquisition platform was built to synchronously record COF, sound pressure, and bidirectional vibration signals during dry sliding tests. Correlation analysis shows that the fluctuation features of COF exhibit strong correlations with resonance frequencies of sound and vibrational signals, while the mean value of COF lacks clear direct correspondence with these signals. Based on these findings, we propose a two-step prediction method with clear physical meaning. First, fluctuation features of COF (e.g., standard deviation, peak-to-peak, waveform factor) are predicted from sound and vibration features using multiple regression models and ensemble strategies. Second, these fluctuation features are used to predict the mean and root mean square (RMS) of COF through statistical modeling and Random Forest regression. The proposed method achieves high accuracy, over 95 % for most fluctuation indicators and above 98 % for mean and RMS predictions. By separating the modeling of fluctuation and central tendency, this method improves both interpretability and prediction performance. It provides a practical approach for early fault warning and long-term monitoring in tribological systems.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111130"},"PeriodicalIF":6.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908021","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}

{"title":"The influence mechanism of nanogradient structures induced by ultrasonic surface rolling process on fretting wear oxidation of 40CrNiMoA steel","authors":"Yuzhong Wu ,&nbsp;Yilong Liang ,&nbsp;Xing Ran ,&nbsp;Xichang Shang ,&nbsp;Cunhong Yin ,&nbsp;Hui Zhang","doi":"10.1016/j.triboint.2025.111133","DOIUrl":"10.1016/j.triboint.2025.111133","url":null,"abstract":"<div><div>In the fretting wear process of alloy steel, the in-situ formation of lubricative oxide layers on the surface significantly influences wear resistance. Ultrasonic surface rolling processing (USRP) can fabricate a nanogradient structure on the surface of 40CrNiMoA steel, which exhibits unique tribo-oxidation behavior during fretting wear. However, the underlying regulatory mechanism remains unclear. To address this, this study prepared a nanogradient structure via USRP and systematically investigated the interplay between frictional behaviour, microstructural evolution and tribo-oxidation through fretting wear tests. The study elucidates the micro-mechanism by which the nano-gradient structure regulates tribological oxidation and enhances wear resistance through the synergistic effects of grain refinement and dislocation proliferation. The results demonstrate that the nanogradient structure enhances the material's shear resistance and promotes the rapid formation of a uniform and stable oxide layer (The oxide layer had already formed after 30 s of fretting wear, with an oxide layer thickness that was 169 nm thicker than the substrate.). Meanwhile, the coarsening of nanocrystals can effectively suppress the persistent oxidation of the surface microstructure, preventing the formation of oxides and thereby avoiding brittle failure, maintaining the oxide layer at a nanoscale thickness.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111133"},"PeriodicalIF":6.1,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913761","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}

{"title":"On measuring the oxidation induction time and Arrhenius temperature for grease lubricated bearings","authors":"Yhan O. Williams ,&nbsp;Piet M. Lugt ,&nbsp;Christoph Schneidhofer ,&nbsp;Andras Vernes","doi":"10.1016/j.triboint.2025.111072","DOIUrl":"10.1016/j.triboint.2025.111072","url":null,"abstract":"<div><div>Chemical degradation of grease in ball bearings is caused by oxidation, which occurs as antioxidants are depleted. The point at which this happens is called the induction time. In this study, we examined the oxidation induction time of several high-quality commercial greases using thermogravimetric analysis with an isoconversional Friedman method. By deriving kinetic parameters at critical conversion points, we demonstrated that these parameters could predict the impact of temperature on grease life under very low load conditions. Our modeling approach successfully replicated the characteristic Arrhenius behavior observed in grease life tests supporting its utility as a predictive tool for grease life and the optimization of grease formulation.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111072"},"PeriodicalIF":6.1,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921800","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}

{"title":"Data-driven enhanced rough contact mechanics: PINN estimation of gap distribution across length scales for partial contacts","authors":"Yunong Zhou ,&nbsp;Hengxu Song","doi":"10.1016/j.triboint.2025.111100","DOIUrl":"10.1016/j.triboint.2025.111100","url":null,"abstract":"<div><div>In this study, we employ Green’s function molecular dynamics (GFMD) to simulate non-adhesive elastic contact between a half-space and a randomly rough counterface in (1+1) dimensions, obtaining gap distributions across varying length scales and Hurst exponents. Using the GFMD-generated dataset and incorporating the convection–diffusion equation form (derived in prior and current work) as a physical constraint, we predict gap distributions via Physics-Informed Neural Network (PINN). Results demonstrate that under partial contact conditions—where analytical solutions are unavailable—PINN predictions assuming drift and diffusion coefficients scale with length exhibit high agreement with GFMD. Furthermore, PINN successfully predicts gap distributions and relative contact areas at larger scales using small-scale training data, closely matching GFMD benchmarks. This establishes PINN as an effective tool for rough surface contact problems, particularly when analytical solutions are absent or computational models are prohibitively expensive.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111100"},"PeriodicalIF":6.1,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894923","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}

{"title":"Investigations on the material removal and damage formation mechanisms of WC-Co cemented carbide in hybrid laser softening and single-grain scratching processes","authors":"Shibo Li ,&nbsp;Chongjun Wu ,&nbsp;Lingwen Chen ,&nbsp;Jingzhu Pang ,&nbsp;Yaqin Zhou ,&nbsp;Steven Y. Liang","doi":"10.1016/j.triboint.2025.111129","DOIUrl":"10.1016/j.triboint.2025.111129","url":null,"abstract":"<div><div>Cemented carbide poses significant challenges in precision and damage-free machining due to its extreme hardness and brittleness. This study investigates the material removal mechanisms in Laser-Assisted Machining (LAM) through quasi-static and grinding-type Single-Grain Scratching (SGS) experiments on WC-Co cemented carbide (K10 grade). The effects of Laser Softening Degree (LSD), scratching modes, loads, and strain rates were systematically analyzed, focusing on friction/wear behavior and crack propagation. And the LSD was quantitatively characterized by the Heat-Affected Zone overlap ratio (O_HAZ). Results demonstrate that laser softening can effectively reduce the surface friction coefficient (by approximately 40 %) and scratching forces while inhibiting tool wear and surface damage. Acoustic emission signal reveals the formation of brittle chips and radial crack networks during scratching. Furthermore, grinding-type SGS shows a distinct transition from the deformation removal stage to the elastic contact stage. Notably, increasing LSD and scratching speed (4.45 m/s ∼ 40.08 m/s) can both significantly inhibit scratching surface wear and enhance the mechanical response rate of the subsurface microstructure. This work provides fundamental insights into thermal-mechanical coupling in LAM, offering practical guidance for controlling grains’ wear in the precision machining of cemented carbides.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111129"},"PeriodicalIF":6.1,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908022","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}

{"title":"Ultralow Wear ZK60 Magnesium Alloy Enabled by Friction-Driven Ag/GO Nanocomposite and Zn-Segregation Induced Stratified MgO/ZnO heterolayer","authors":"Guigui Peng ,&nbsp;Peng Chen ,&nbsp;Chaokun Zhao ,&nbsp;Yilong Liang ,&nbsp;Xing Ran","doi":"10.1016/j.triboint.2025.111128","DOIUrl":"10.1016/j.triboint.2025.111128","url":null,"abstract":"<div><div>ZK60 alloy inherently suffers from poor wear resistance, severely limiting its application under severe friction conditions. To improve this, a top-down strategy was employed, combining self-deposition and magnetron sputtering to construct a composite lubricating coating (Ag/GO-ZK60). Under a 15 N load for 30 min, the Ag/GO-ZK60 achieved an ultralow wear rate of 0.048 μm³ N⁻¹ μm⁻¹, corresponding to a reduction in wear of up to 94.4 % compared to that of bare ZK60. Microstructural analysis revealed that this improvement originates from the friction-driven formation of a stable Ag/GO nanocomposite, effectively preventing GO nanosheet delamination. Based on the continuous lubrication provided by GO, further friction-driven processes promoted the migration and selective oxidation of Mg and Zn, leading to the in-situ formation of a stratified and dense MgO/ZnO heterostructure beneath the Ag/GO layer. Notably, ZnO, enriched via elemental segregation and located beneath MgO, alleviates the performance mismatch between MgO and the ZK60 substrate, thereby enhancing the interfacial stability of the oxide layer and further improving the anti-wear capability.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111128"},"PeriodicalIF":6.1,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894925","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}

{"title":"Unveiling the mechano-chemical synergy of AMP derivatives as multi-functional pH regulators on C-, R-, and M-plane sapphire CMP via experiments and DFT calculations","authors":"Bin Hu ,&nbsp;Xinhuan Niu ,&nbsp;Jiakai Zhou ,&nbsp;Changxin Dong ,&nbsp;Chao He ,&nbsp;Xinjie Li ,&nbsp;Zheng Wu ,&nbsp;Jiahui Li","doi":"10.1016/j.triboint.2025.111127","DOIUrl":"10.1016/j.triboint.2025.111127","url":null,"abstract":"<div><div>The development of sapphire slurry follows the principles of compositional simplification, environmental sustainability, and high efficiency with low cost. This study systematically investigated the effects of polyhydroxyamine pH regulators, 2-amino-2-methyl-1-propanol (AMP), 2-amino-2-methyl-1,3-propanediol (AMPD), and tris(hydroxymethyl)aminomethane (TRIS), on the polishing performance of C-, R-, and M-plane sapphire substrates. The results demonstrated that TRIS exhibited the highest efficacy, achieving material removal rates (MRRs) of 5.512 µm/h, 3.422 µm/h, and 4.541 µm/h for C-, R-, and M-plane sapphire, respectively, while reducing surface roughness (Sq) to 0.191 nm, 0.178 nm, and 0.184 nm. Tribological analysis, SEM characterization, zeta potential measurements, particle size distribution tests, and spectroscopic techniques (UV-Vis, XPS, and FTIR) were employed to elucidate the mechanical and chemical mechanisms governing material removal. All three pH regulators can also function as complexing agents, forming complexes with <span><math><msubsup><mrow><mtext>Al</mtext><mrow><mfenced><mrow><mtext>OH</mtext></mrow></mfenced></mrow></mrow><mrow><mn>4</mn></mrow><mrow><mo>−</mo></mrow></msubsup></math></span>, with TRIS demonstrating the strongest chelation capability. Density functional theory (DFT) calculations further verified these findings, revealing that TRIS possesses the highest number of reactive sites. The consistency between computational and experimental results established a quantitative structure-performance relationship. This work provides a green and efficient paradigm for the precision machining of hard, brittle materials.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111127"},"PeriodicalIF":6.1,"publicationDate":"2025-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144894926","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}

{"title":"Impact of sensitization on wear characteristics of thermo-mechanically processed SS316L: A comprehensive investigation","authors":"Prabhat Chand Yadav ,&nbsp;Nitin Kumar Sharma ,&nbsp;Jitendra Kumar Katiyar ,&nbsp;Jimmy Karloopia","doi":"10.1016/j.triboint.2025.111115","DOIUrl":"10.1016/j.triboint.2025.111115","url":null,"abstract":"<div><div>This study investigates the effect of thermo-mechanical processing (TMP) on sensitization and wear characteristics of austenitic stainless steel 316 L. Solution annealed (SA) material was rolled to induce deformation (4 R and 12 R) and subjected to heat-treatment at sensitization temperatures (400 °C, 600 °C, and 700 °C). Wear tests without lubrication were conducted on these TMP samples to analyze the interplay between sensitization and deformation in influencing wear behavior. Sensitization was observed in deformed samples after heat treatment at 600 °C and 700 °C, as evidenced by Tafel plots. The average coefficient of friction (COF) was found to be higher for SA and lower for 4 R and 12 R samples, but increased COF in the post heat-treatment regime up to 700 °C, indicating sensitization. Deformed sample shows ∼ 9.1 % and ∼ 5.8 % drop in average COF for 4 R and 12 R sample respectively till the onset of sensitization regime (400 °C). However, heat-treatment at the end of sensitization regime (400 °C) attribute to ∼ 7.8 % and ∼ 11.0 % increase in average COF for 4 R and 12 R sample w.r.t. SA sample at room temperature. Volumetric wear loss and wear rate decreased for SA during heat-treatment up to 700 °C, while deformed samples showed a significant increase at 700 °C. Our findings suggest a substantial impact of sensitization temperature above 600 °C on wear behavior in deformed samples, contrasting with the limited effect on SA and subsequently heat-treated samples. The extent of sensitization was observed to depend on the level of deformation. Further, worn surface characterization revealed abrasion and delamination followed by adhesion as dominant wear mechanisms in TMPed SS 316 L under fretting wear conditions.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"214 ","pages":"Article 111115"},"PeriodicalIF":6.1,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892331","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}