Tribology International最新文献_第4页

Achieving oil-based superlubricity with near-zero wear via synergistic effect between PEEK-PTFE and PAO40 containing DDP-Cu nanoparticles

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-17 DOI: 10.1016/j.triboint.2025.110645

Shanshan Li , Chuanping Gao , Chunjian Duan , Shengmao Zhang , Pingyu Zhang , Zhijun Zhang

{"title":"Achieving oil-based superlubricity with near-zero wear via synergistic effect between PEEK-PTFE and PAO40 containing DDP-Cu nanoparticles","authors":"Shanshan Li , Chuanping Gao , Chunjian Duan , Shengmao Zhang , Pingyu Zhang , Zhijun Zhang","doi":"10.1016/j.triboint.2025.110645","DOIUrl":"10.1016/j.triboint.2025.110645","url":null,"abstract":"<div><div>Oil-based superlubricity introduces a novel approach to energy conservation. Facing two main obstacles at present, i.e., higher viscosity of lubricating oil and special tribopairs, a novel solid-liquid combined system is built in this work, which is mainly based on excellent tribological property of oil-soluble dialkyl-dithiophosphoric-modified Cu nanoparticles (DDP-Cu NPs) and superior self-lubricating capability of polymeric tribopairs. In this system, polyetheretherketone (PEEK) is coupled with polytetrafluoroethylene (PTFE) to form a similar/dissimilar tribopair; and neat PAO40 (a real serving lubricating oil with high viscosity in poly-alpha olefin oil family), or PAO40 containing oil-soluble DDP-Cu NPs (PAO40 + Cu), is used as a lubricant during the sliding test. The results show that only dissimilar tribopair, i.e., PEEK-PTFE, can achieve oil-based superlubricity under the selected sliding conditions, which can be attributed to the synergistic effect between PEEK-PTFE tribopair and PAO40/PAO40 + 0.25 Cu. Furthermore, due to lower cohesive energy density (CED), PTFE is more likely to be transferred onto PEEK together with some tribochemical reactions, finally generating a high-performance tribofilm rich in carboxylated PTFE. In addition, it is concluded that, when lubricated with PAO40, the above synergistic effect is a key to achieve superlubricity; and for PAO40 + 0.25 Cu, the carboxylated PTFE and the exposed Cu core will create chelate effect, which can not only further enhance this synergistic effect, but also improve the wear-resistance of the system reaching near-zero wear. This work not only provides a novel idea for designing oil-based superlubricity system, but broadens the type of tribopair materials achieving oil-based superlubricity to some extent.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"208 ","pages":"Article 110645"},"PeriodicalIF":6.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687276","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

Discussion of “Prediction of pavement friction coefficient based on dynamic friction test simulation”

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-16 DOI: 10.1016/j.triboint.2025.110649

Yunwei Meng , Zixiao Wang , Hang Lu

引用次数: 0

Review of tribological considerations in solid oxide fuel cells

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-15 DOI: 10.1016/j.triboint.2025.110641

Annanthan Narayanasamy , Nurul Akidah Baharuddin , Afifah Z. Juri

引用次数: 0

Data-driven analysis of magnetorheological fluid seal degradation for performance prediction

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-15 DOI: 10.1016/j.triboint.2025.110642

Yurui Shen , Chengli Yang , Tianxiang Du , Dezheng Hua , Jun Wu , Xinhua Liu

引用次数: 0

Tribochemical mechanism of ionic liquid [P6,6,6,14][BEHP] on ferrous surfaces

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-15 DOI: 10.1016/j.triboint.2025.110643

Xiaopeng Ruan , Xiaomei Wang , Yang Zhao , Rui Zhou , Luyao Bao , Feng Zhou , Zhibin Lu

{"title":"Tribochemical mechanism of ionic liquid [P6,6,6,14][BEHP] on ferrous surfaces","authors":"Xiaopeng Ruan , Xiaomei Wang , Yang Zhao , Rui Zhou , Luyao Bao , Feng Zhou , Zhibin Lu","doi":"10.1016/j.triboint.2025.110643","DOIUrl":"10.1016/j.triboint.2025.110643","url":null,"abstract":"<div><div>The tribochemical reactions between [P<sub>6,6,6,14</sub>][BEHP] ionic liquid and ferrous surfaces are studied using reactive molecular simulations. The chemisorbed films initially develop through Fe−C, Fe−O, and Fe−P bonding, followed by decomposition of [P<sub>6,6,6,14</sub>][BEHP] generating free radicals, anions, and cations. Eventually, the cross-polymerization among [P<sub>6,6,6,14</sub>]<sup>+</sup>, [BEHP]<sup>-</sup> and their decomposition products leads to the tribofilm growth. The presence of base oil decreases the tribochemical reaction rate, it does not significantly alter the reaction pathways. And higher temperature significantly promotes tribochemical reactions rate, while the effect of normal stress is minimal and irregular. Furthermore, an electric field can direct reactive molecular species toward the substrate, thus, intensify the tribochemical reactions, and reduce the shear stress by improving the mobility of molecules. This work offers a comprehensive understanding of [P<sub>6,6,6,14</sub>][BEHP] tribofilm formation on ferrous interfaces.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"208 ","pages":"Article 110643"},"PeriodicalIF":6.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687091","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

Multi-scale simulations of plasticity in metal nanocontacts: Irreversibility of the deformation

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-14 DOI: 10.1016/j.triboint.2025.110632

A.C. Dadduzio, L. Nicola

{"title":"Multi-scale simulations of plasticity in metal nanocontacts: Irreversibility of the deformation","authors":"A.C. Dadduzio, L. Nicola","doi":"10.1016/j.triboint.2025.110632","DOIUrl":"10.1016/j.triboint.2025.110632","url":null,"abstract":"<div><div>A dual-scale scheme, comprising an atomistic and a continuum domain, is here developed to study contact deformation. The three-dimensional model allows to tackle with atomistic precision problems where contact occurs at the nano-scale, while the bodies have larger dimensions. The upper part of the body is modeled by means of an atomistic domain to capture non-linearities arising in the surrounding of the contact region, including defects formation and dislocation motion. The lower part of the body, away from the contact, is instead modeled as a continuum. The novelty of the dual-scale method lies in the way the solution to the continuum is obtained: analytically through a Green’s function methodology, thus very time efficient. The model is first validated through direct comparison with full atomistic simulations and then applied to study light indentation and subsequent unloading of metal crystal by means of a spherical tip. The simulations intend to shed more light on the ‘reversed plastic behavior’ recently observed in nanocontacts. This is done by computing the irreversible plastic strain after unloading. Results show that if there is a significant deviation from the elastic curve upon loading, which manifests itself with a few drops in the force, there is also irreversible strain upon unloading. Only the nucleation of stacking faults that give negligible deviation from the load area curve is reversible. Classical theories like Hertz or JKR can be safely used when this initial stacking faults appear, but should be avoided when actual plasticity kicks in.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"208 ","pages":"Article 110632"},"PeriodicalIF":6.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of counterface surface texturing on wear behaviour of ultra-high molecular weight polyethylene used in artificial joints

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-12 DOI: 10.1016/j.triboint.2025.110638

Yoshitaka Nakanishi , Yukio Fujiwara , Yuta Nakashima , Yoshihiro Komohara , Kazunori Hino , Hiromasa Miura , Hidehiko Higaki

{"title":"Effects of counterface surface texturing on wear behaviour of ultra-high molecular weight polyethylene used in artificial joints","authors":"Yoshitaka Nakanishi , Yukio Fujiwara , Yuta Nakashima , Yoshihiro Komohara , Kazunori Hino , Hiromasa Miura , Hidehiko Higaki","doi":"10.1016/j.triboint.2025.110638","DOIUrl":"10.1016/j.triboint.2025.110638","url":null,"abstract":"<div><div>This study investigates the effects of counterface surface texturing on the wear behaviour and particle morphology of ultra-high molecular weight polyethylene (UHMWPE) used in artificial joints. A pin-on-disc wear tester was employed to evaluate four types of polyethylene, including virgin and vitamin E-stabilised variants, with and without gamma-ray irradiation. Surface texturing on Co-28Cr-6Mo alloy counterfaces fabricated using micro slurry-jet erosion (a type of wet blasting technique) reduced the gravimetric wear of polyethylene, particularly in vitamin E-stabilised and gamma-irradiated samples. Textured surfaces facilitated the accumulation of polyethylene transfer films, which occasionally detached to form larger wear particles. However, the effectiveness of this mechanism varied with polyethylene composition. Gamma irradiation enhanced wear resistance through polymer cross-linking but increased material brittleness, limiting its compatibility with textured surfaces. Vitamin E reduced wear through boundary lubrication effects but inhibited transfer film formation, leading to smaller particle sizes in textured conditions. Morphological analysis of wear particles revealed significant differences in particle size, with textured surfaces generating larger particles in most cases. This study highlights the complex interplay between polyethylene properties—such as cross-linking and antioxidant stabilisation—and surface texturing in determining wear performance. These findings underscore the potential of surface texturing to optimise wear resistance and reduce peri-implant osteolysis caused by polyethylene debris. Future work should focus on refining texturing patterns and material properties to enhance the longevity and performance of artificial joint materials.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"207 ","pages":"Article 110638"},"PeriodicalIF":6.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632023","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

Local surface roughness of cylindrical gears: Concept, method, and application

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-11 DOI: 10.1016/j.triboint.2025.110637

Yunfei Li , Jiachun Lin , Huixu Song , Yunjin Xiang , Zhaoyao Shi , Ulf Olofsson

{"title":"Local surface roughness of cylindrical gears: Concept, method, and application","authors":"Yunfei Li , Jiachun Lin , Huixu Song , Yunjin Xiang , Zhaoyao Shi , Ulf Olofsson","doi":"10.1016/j.triboint.2025.110637","DOIUrl":"10.1016/j.triboint.2025.110637","url":null,"abstract":"<div><div>Surface roughness strongly affects the surface load-carrying capacity, transmission efficiency, and bending strength of gears. However, tooth-surface roughness is traditionally measured in terms of the average roughness parameter of the tooth surface, which is satisfactory for processing quality control but inadequate for performance analysis purposes. Each point of the tooth-profile meshes sequentially and its parameters (such as slip–roll ratio, load, and friction) temporally vary throughout the gear transmission process. Considering these variations, this paper proposes a local roughness and evaluation method for analyzing tooth-profile wear. First, the gear-tooth profile (roughness, waviness, and shape deviation) is obtained on multiple geometric scales using a roughness profilometer. Second, the acquired curves are mapped to the gear coordinate system using the orthogonal distance fitting algorithm. Thereafter, the contact of the tooth surface is analyzed under the working conditions of a gear pair. The Hertzian contact width of the working points of the tooth profile is calculated from the root to the top of the tooth, and the roughness parameter at each point is calculated in the contact area. The obtained roughness parameters are sequentially connected to obtain the local roughness curve. Finally, the tooth profile wear is determined from the local roughness curve during an FZG gear test. The local roughness curves provide accurate evaluations of the lubrication state of the tooth surface and the locations of pitting and micro-pitting on the tooth surface.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"207 ","pages":"Article 110637"},"PeriodicalIF":6.1,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610229","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

Effects of sphere size and fracture parameters on adhesive wear in elastic-plastic spherical microcontacts

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-11 DOI: 10.1016/j.triboint.2025.110640

Guo Xiang, Roman Goltsberg, Izhak Etsion

{"title":"Effects of sphere size and fracture parameters on adhesive wear in elastic-plastic spherical microcontacts","authors":"Guo Xiang, Roman Goltsberg, Izhak Etsion","doi":"10.1016/j.triboint.2025.110640","DOIUrl":"10.1016/j.triboint.2025.110640","url":null,"abstract":"<div><div>The present study examines how sphere size and fracture parameters influence adhesive wear between an elastic-plastic gold sphere and a rigid flat. The sphere is subjected to combined normal loading and tangential displacement. To this end, the finite element (FE) method is employed. The adhesive pressure, derived from the Lennard-Jones (LJ) potential, is implemented on both the spherical and rigid flat surfaces via a user subroutine. The full stick contact condition is employed between the sphere and the rigid flat. The Johnson-Cook (JC) failure and fracture energy criteria are employed to capture damage initiation and evolution, respectively, during the tangential displacement. The simulation results reveal that the influence of adhesion on dimensionless wear volume and wear rate diminishes as the sphere radius increases from 0.5μm to 5μm, particularly when the dimensionless normal load is smaller than 2.5. Additionally, the dimensionless wear volume and wear rate reach their peaks at dimensionless fracture energies of 1.0 and 1.4, respectively. A fracture strain of 0.5 results in the maximum values for both dimensionless wear volume and wear rate. Finally, the influence of dimensionless fracture energy and fracture strain on fracture propagation mode is explored.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"207 ","pages":"Article 110640"},"PeriodicalIF":6.1,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610230","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

Effect of interlayer bonding and stacking structure on the tribological properties of graphene oxide coatings

IF 6.1 1区工程技术

Tribology International Pub Date : 2025-03-07 DOI: 10.1016/j.triboint.2025.110636

Mengjiao Wang , Ao Wang , Xiangkai Meng , Xudong Peng , Jinqing Wang

引用次数: 0