Tribology International最新文献

{"title":"Excellent lubrication characteristics of green lubricants from yam polysaccharide in reducing friction and wear for water-lubricated environments","authors":"Li Shi,&nbsp;Songlin Nie,&nbsp;Hui Ji,&nbsp;Hao He,&nbsp;Ruidong Hong,&nbsp;Fanglong Yin","doi":"10.1016/j.triboint.2025.110755","DOIUrl":"10.1016/j.triboint.2025.110755","url":null,"abstract":"<div><div>Yam polysaccharide (YP) is a promising environmentally friendly lubricant in water-lubricated environments due to its hydroxyl and carboxyl groups. The tribological performance of YP was evaluated using ball-disc friction tests across four pairs (Si₃N₄/17–4PH, YN8X/17–4PH, 17–4PH/SiC, YN8X/SiC) under varying conditions (load: 5–60 N, speed: 0.25–0.5 m/s, concentration: 0.5–5.0 wt%). FTIR/Raman spectroscopy, microscopic observation, and EDS were used to analyze the lubrication mechanism, while thermal imaging monitored interfacial temperature changes. Notably, at 2.0 wt% concentration, YP reduced the average coefficient of friction (COF) and wear rate of the 17–4PH/SiC pair by 77.6 % and 86.3 %, respectively. Unlike conventional bio-lubricants limited by load-capacity (COF = 0.07 at 60 N), YP provides a sustainable solution for water-lubricated friction pairs, achieving low wear and biodegradability.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110755"},"PeriodicalIF":6.1,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894378","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":"Influence of mechanical properties on cavitation-erosion via cavitating jet","authors":"Tahmina Keya ,&nbsp;Shawkat Imam Shakil ,&nbsp;Akindele Odeshi ,&nbsp;Meysam Haghshenas ,&nbsp;Jin-Keun Choi ,&nbsp;Amir Hadadzadeh","doi":"10.1016/j.triboint.2025.110754","DOIUrl":"10.1016/j.triboint.2025.110754","url":null,"abstract":"<div><div>A wide range of materials, including aluminum, copper-based alloys, and stainless steel, were studied to correlate mechanical properties with cavitation erosion rates. Cavitation erosion tests using a cavitating jet apparatus showed that AA 6063 aluminum had the highest maximum erosion rate (MER), 171 times higher than bronze, the most erosion-resistant material. Mechanical tests, including microhardness, depth-sensing indentation, quasi-static, and high-strain rate tests, revealed that cavitation erosion does not correlate with a single property. Results indicated that MER increases with decreasing hardness, plastic indentation work, and wear resistance index. Furthermore, quasi-static and high-strain rate tests showed that MER increases with decreasing toughness, ultimate strength, and flow stress. This study offers comprehensive insights into the cavitation erosion behavior of materials.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110754"},"PeriodicalIF":6.1,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887328","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":"Superior wear resistance of CrN film by PVD/HVOF structure design","authors":"Kewei Li ,&nbsp;Lei Shao ,&nbsp;Wensheng Li ,&nbsp;Lunlin Shang ,&nbsp;Ruixuan Li ,&nbsp;Yong Zhang ,&nbsp;Qiang Song ,&nbsp;Canming Wang ,&nbsp;Chunzhi Zhang","doi":"10.1016/j.triboint.2025.110753","DOIUrl":"10.1016/j.triboint.2025.110753","url":null,"abstract":"<div><div>Nitride films are generally hard yet brittle and thin, leading to cracking and peeling off, particularly under heavy load. In response, this study proposes a combinatorial strategy to improve the wear resistance performance of CrN film using PVD/HVOF technology. Although introducing the FeCoNiAlSi HVOF coating does not change the phase structure of top CrN film, it improves the hardness, bearing capacity and binding strength of CrN film. In addition, the wear resistance has also been significantly enhanced, the introduction of FeCoNiAlSi HVOF coating changes the wear mechanism of CrN from abrasive wear and fatigue wear to abrasive wear of CrN/FeCoNiAlSi double-layer coating. It is speculated that this PVD/HVOF combinatorial design concept may be applied to many other soft metal substrates.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110753"},"PeriodicalIF":6.1,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881625","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":"Continuum modeling of dislocation microstructures under tribological loading","authors":"Sing-Huei Lee ,&nbsp;Christian Wieners ,&nbsp;Katrin Schulz","doi":"10.1016/j.triboint.2025.110731","DOIUrl":"10.1016/j.triboint.2025.110731","url":null,"abstract":"<div><div>Dislocation-mediated plastic deformation governs the mechanical response and microstructural evolution in tribological contacts, yet linking these effects across scales remains challenging. We present a dislocation-based crystal plasticity model that couples micro-scale dislocation dynamics with macro-scale plastic deformation under sliding conditions. By incorporating crystallographic effects on dislocation mobility and capturing subsurface dislocation transport and trace line formation, the model reveals intricate microstructural features that influence plastic deformation, surface topography, and contact area evolution. Unlike continuum-scale simulations, which lack the resolution to capture microstructural details, or discrete simulations, which fail to couple microstructure-driven plasticity with tribological contact, this model bridges these gaps. Leveraging an implicit macro–micro coupling mechanism, a flux vector splitting-based numerical scheme, and a penalty contact boundary condition, this work provides a foundation for predictive modeling capturing dislocation-driven deformation under tribological contact.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110731"},"PeriodicalIF":6.1,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878862","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":"Fundamentals of cooling/lubrication effect in grinding of Inconel 718 employing an inverse thermo-mechanical model","authors":"Amin Bagherzadeh ,&nbsp;Farzad Pashmforoush ,&nbsp;Hamid Jamshidi ,&nbsp;Erhan Budak","doi":"10.1016/j.triboint.2025.110746","DOIUrl":"10.1016/j.triboint.2025.110746","url":null,"abstract":"<div><div>Cutting fluids are essential in grinding to control the intense heat generated at the wheel–workpiece interface. This study investigates the cooling/lubrication effect using an inverse thermo-mechanical model to support the understanding and optimization of sustainable cooling strategies. A hybrid analytical–experimental method is developed for determining the heat partition ratio and the convective heat transfer coefficient (h), which are critical to understanding thermal behavior in grinding. The inverse modeling approach considers the thermal behaviour of coolants and workpiece materials under elevated temperatures, where their thermo-physical properties differ significantly from those at room temperature. It further incorporates the effects of grinding parameters, wheel-workpiece contact length, and coolant supply conditions. Additionally, chemical reactions in the grinding zone, which can either absorb or release heat, are accounted for, further influencing heat transfer dynamics. The model is applied to evaluate several eco-friendly cooling/lubrication techniques, including cryogenic liquid nitrogen, carbon dioxide, minimum quantity lubrication (MQL), and their hybrid combinations, and compared to conventional flood and dry grinding. Key performance indicators such as grinding forces, temperature, surface finish, and elemental composition are analyzed. A generalized formula for the heat partition ratio is proposed based on the inverse method, enabling consistent evaluation of thermal effects across different cooling conditions. This integrated modeling approach enhances the understanding of coolant behavior in realistic grinding environments and supports the transition toward sustainable, high-efficiency manufacturing by guiding the selection and optimization of environmentally friendly cooling/lubrication methods.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110746"},"PeriodicalIF":6.1,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143881626","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":"Cage parameters on friction within cage-pockets contacts and lubrication behaviors in ball-raceway contacts","authors":"Xuyang Jin ,&nbsp;Yonghui Wang ,&nbsp;Qinghua Bai ,&nbsp;Xinming Li ,&nbsp;Hao Jiang ,&nbsp;Feng Guo ,&nbsp;Xiaoyu Bai ,&nbsp;Gerhard Poll","doi":"10.1016/j.triboint.2025.110747","DOIUrl":"10.1016/j.triboint.2025.110747","url":null,"abstract":"<div><div>The dynamic motion of the cage and rolling elements in rolling bearings significantly influences lubricant redistribution and film formation. To investigate these complex interactions, a novel imental apparatus was developed by integrating a cage measurement unit into a ball-on-disc optical elastohydrodynamic lubrication (EHL) test rig. The influence of cage pocket positions, cage dimensions, grooved surface textures, and grease properties on film thickness and friction forces at the ball-raceway and ball-cage interfaces were studied. Results showed that the cage plays a crucial role in enhancing ball-raceway lubrication by redistributing lubricant across ball surfaces, with its effectiveness governed by positional clearances, grease type, and cage design. The lubrication state of the ball-raceway interface was found to be closely linked to the cage-ball interaction forces, requiring a delicate balance for optimal performance. Analyzing and optimizing the friction behavior between the cage and rolling elements, along with cage structure optimization, can guide the design of novel cage structures for improved bearing lubrication characteristics. These findings provide valuable insights into the complex lubrication mechanisms induced by the dynamic motion of the cage and rolling elements.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110747"},"PeriodicalIF":6.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873588","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":"Surface asperity-enhanced micro electrical discharge in lubricated contact interfaces","authors":"Xiaoman Wang ,&nbsp;Q. Jane Wang ,&nbsp;Calvin Davies ,&nbsp;Alex Mo ,&nbsp;Shuangbiao Liu ,&nbsp;Ning Ren","doi":"10.1016/j.triboint.2025.110742","DOIUrl":"10.1016/j.triboint.2025.110742","url":null,"abstract":"<div><div>Electrically induced bearing damage (EIBD) is a significant challenge to lubricated interfaces in machine elements subjected to electric fields, particularly for applications like battery electric vehicles (BEVs), plug-in hybrid electric vehicles (PHEVs), and wind turbines. When the electric field across a non-conducting lubricant film exceeds its dielectric strength, electrical discharges occur, causing surface damage to machine elements. Surface asperities amplify the local electric field, leading to microscale discharges and micro-pitting in the areas corresponding to the minimum film thickness within the elastohydrodynamic lubrication (EHL) regime. This study investigates the effect of asperities on local electric fields and introduces a field enhancement parameter to quantify the influence of various asperity geometries, including hemispheres, semicylinders, hyperboloid tips, hyperbolic blades, and two-dimensional sinusoidal wavy surfaces. The analysis results indicate that for a given film thickness, the enhancement effect is strongly dependent on the radius of curvature of the asperity tip, and that as the radius increases, the enhancement effect reduces and diminishes. The proposed method helps effectively predict the electrical-breakdown voltage for known asperity characteristics, offering valuable insights into the nature of EIBD, useful for the design of reliable lubricated systems working under high electric fields.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110742"},"PeriodicalIF":6.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887329","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":"Fretting wear mechanism of GH4169 dovetail joint specimens treated with hybrid laser shock peening","authors":"Xiuyang Fang ,&nbsp;Zheng Wang ,&nbsp;Magd Abdel Wahab ,&nbsp;Jianen Gong ,&nbsp;Xiong Liu ,&nbsp;Xing Liu ,&nbsp;Zhenbing Cai","doi":"10.1016/j.triboint.2025.110740","DOIUrl":"10.1016/j.triboint.2025.110740","url":null,"abstract":"<div><div>Aero engine blade structure is prone to severe fretting wear under centrifugal forces and vibration loads, resulting in greatly reduced engine service life, which is a typical fretting damage problem. In this paper, without Absorbing layer Nanosecond Laser Shock Peening (wAN-LSP) and without Absorbing layer Nanosecond superimposed Femtosecond hybrid Laser Shock Peening (NF-LSP) are utilized to strengthen the surface of GH4169 dovetail joint specimens, which is a common material for engine blades, to explore its strengthening mechanism and fretting wear evolution law. The findings indicate that the surface roughness of the wAN-LSP specimen rises from 0.28 μm to 1.16 μm. The thermal effects of wAN-LSP lead to the formation of a molten layer roughly 10.97 μm thick on the surface, accompanied by numerous pits, ablation holes, and micro-cracks. In contrast, NF-LSP treatment effectively eliminates the surface oxidation defects made by the thermal effects of wAN-LSP, leading to a slight decrease in surface roughness. Both wAN-LSP and NF-LSP treatments enhance the surface hardness of the specimens, creating a plastic deformation layer roughly 400 μm deep, but the near surface hardness of NF-LSP treated specimen is further improved compared to that of the wAN-LSP specimen. The wear mechanism observed in the GH4169 dovetail joint specimens following wAN-LSP and NF-LSP treatment are identified as abrasive wear and oxidation wear. Initially, as the number of cycles raises, the wear volume of GH4169 specimen treated with wAN-LSP is higher than that of untreated specimen, but subsequently, it becomes lesser than that of the untreated specimen. This phenomenon results from the interplay between the molten layer and hardened layer. In the initial stage of wear, despite the surface strengthening of the wAN-LSP specimen, the presence of molten layer significantly diminishes the fretting wear resistance of the material. As wear progresses, the molten layer is removed, revealing the benefits of surface strengthening. Throughout the wear process, the wear volume of NF-LSP specimen remains consistently lower than that of other two specimens. In comparison to the wAN-LSP treatment, NF-LSP treatment can enhance the surface condition of the material, leading to improve resistance of fretting wear across various wear stages.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110740"},"PeriodicalIF":6.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891770","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":"Friction behaviors of graphene sliding on rough Au substrates and intercalated water layer by molecular dynamics simulations","authors":"Ruoyu Wu ,&nbsp;Feng Liu ,&nbsp;Huiming Ning ,&nbsp;Rui Zou ,&nbsp;Ning Hu ,&nbsp;Cheng Yan","doi":"10.1016/j.triboint.2025.110743","DOIUrl":"10.1016/j.triboint.2025.110743","url":null,"abstract":"<div><div>Superlubricity makes graphene an excellent lubricating material. To further investigate the friction properties of graphene, we established atomic models of graphene sheet sliding on the sinusoidally rough Au surface, the randomly rough Au surface, as well as the water molecule layer intercalated on Au substrate, respectively. Our results show that the friction force increases with roughness of the surface, but in the case of a small roughness, the incommensurability between the graphene and Au substrate surfaces reduces the friction force; when a water molecule layer exists, it separates the friction pairs, which results in lower friction than in the dry environment, and the deformability of water also contributes to the frictional hysteresis behavior during the loading and unloading process.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110743"},"PeriodicalIF":6.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143873587","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":"Controlling adhesion of PDMS elastomer through process parameters","authors":"Susheel Kumar ,&nbsp;Krishnacharya Khare ,&nbsp;Manjesh K. Singh","doi":"10.1016/j.triboint.2025.110724","DOIUrl":"10.1016/j.triboint.2025.110724","url":null,"abstract":"<div><div>As technology advances and devices miniaturize, controlling adhesion becomes critical. Adhesion is also a significant cause of failure in MEMS and NEMS devices. Examples of PDMS elastomers-based micro and nanodevices include biochips, triboelectric nanogenerators, electronic sensors, and microfluidic devices. Surface adhesion of PDMS elastomer can be managed through various techniques, including chemical surface treatments, altering surface textures, surface grafting, applying external adhesive layers, introducing material heterogeneity, and modifying the material’s mechanical properties. This research aims to tune adhesion by altering the mechanical properties, such as the modulus of elasticity of PDMS elastomer, through changes in process parameters, specifically curing temperature and curing time. We used the wedge test to determine the adhesion between the PDMS elastomer and the borosilicate glass slide. This approach creates the wedge by inserting a glass coverslip at the interface. We see a significant increase in the modulus of elasticity, an increase in equilibrium crack length, and a drop in the work of adhesion when the PDMS elastomer’s curing temperature and curing time rise. We exhibit and discuss how the process parameters affect the modulus of elasticity of the PDMS elastomer and its adhesion behavior to a borosilicate glass slide.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"209 ","pages":"Article 110724"},"PeriodicalIF":6.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877043","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}