Zhengwei Lin , Rui Guo , Yang Lyu , Di Liu , Jinqiu Zhu , Liangying Wu , Xiaolong Wang
{"title":"Enhanced interlayer adhesion and regulated tribological behaviors of 3D printed poly(ether ether ketone) by annealing","authors":"Zhengwei Lin , Rui Guo , Yang Lyu , Di Liu , Jinqiu Zhu , Liangying Wu , Xiaolong Wang","doi":"10.1016/j.triboint.2024.110362","DOIUrl":"10.1016/j.triboint.2024.110362","url":null,"abstract":"<div><div>Most of the current poly(ether ether ketone) (PEEK) parts manufactured via fused deposition modeling (FDM) printing are suffering for weak interlayer adhesion and low mechanical strength. Herein, a simplified tactic is adopted, which combined FDM printing with annealing post-treatment, to realize a better mechanical strength, interlayer adhesion and wear resistance of 3D printed PEEK. The freeze-fracture surface of PEEK annealed at 190 ℃ was dense. At the normal load of 30 N, the wear rate of annealed PEEK reached the minimum value of 2.83 × 10<sup>−5</sup> mm<sup>3</sup>/(N·m), with a 34 % reduction. At a higher load of 70 N, the annealed PEEK at 170 ℃ still maintained a low wear rate. Moreover, the annealed PEEK exhibited excellent manufacturing precision and fidelity. The PEEK annealed at 170 ℃ was used to simulate wear within knee-joint cavity and planetary gears were printed for demonstration, which run stably at different working conditions. These findings highlight the significant potential of 3D printed PEEK combined with annealing post-treatment in the applications of heavy-load gear and bionic joint.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110362"},"PeriodicalIF":6.1,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587219","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}
Xuhui He , Yufei Wang , Minghui Lang , Xianzong Wang , Jianxi Liu , Long Wang , Jun Yang
{"title":"Wettability and lubricity of borosilicate glass to H13 steel and TZM alloy at 900 ℃","authors":"Xuhui He , Yufei Wang , Minghui Lang , Xianzong Wang , Jianxi Liu , Long Wang , Jun Yang","doi":"10.1016/j.triboint.2024.110360","DOIUrl":"10.1016/j.triboint.2024.110360","url":null,"abstract":"<div><div>Lubrication can reduce friction, wear and oxidation of mechanical moving parts to achieve the purpose of maintaining the working stability, high efficiency and long life of the device. Melt lubricants have excellent anti-friction, anti-wear and anti-oxidation properties and are used in the hot metal forming process for steels. TZM alloy is a promising forging die to replace H13 steel in the hot metal forming process. In this study, the high temperature wettability and high temperature tribological performance of borosilicate glass on H13 steel and TZM alloy were studied. The results suggest that the glass has good wettability on the hot H13 steel and promising lubricating with coefficient of friction of 0.06 at 900 ℃. However, the same glass shows poor wettability and lubricating for the TZM alloy. It indicates that high temperature wettability is also one of the key parameters that influence the tribological performance, rather than the well-known high temperature viscosity. Surface and interface characterization indicates that the Fe<sub>2</sub>O<sub>3</sub> induced enrichment of the network modifier Na<sup>+</sup> near the substrate surface, the dense and shearable low-oxygen permeable glass film led to the excellent oxidation resistance and lubrication properties in the friction system of H13 steel (pin). The erosion of the borosilicate melt by MoO<sub>3</sub> leads to poor adhesion, the phase separation behavior of the glass polymerization zone and the molybdate depolymerization zone. The melting state of the low melting point species make the TZM alloy (pin) friction system exhibit complex friction behavior. This work will provide some guideline for the structure and wettability control for promising high temperature lubricating.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110360"},"PeriodicalIF":6.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660420","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}
Shouyao Liu , Jian Wu , Shixue He , Xuebo Yuan , Stanisław Stupkiewicz , Youshan Wang
{"title":"Effect of substrate stiffness on interfacial Schallamach wave of flexible film/substrate bilayer structure: Cohesive contact insight","authors":"Shouyao Liu , Jian Wu , Shixue He , Xuebo Yuan , Stanisław Stupkiewicz , Youshan Wang","doi":"10.1016/j.triboint.2024.110358","DOIUrl":"10.1016/j.triboint.2024.110358","url":null,"abstract":"<div><div>As the critical feature of the stick-slip for soft materials, the interfacial Schallamach waves of flexible composite structures are essential for smart tactile sensors to realize sliding perception. Herein, the Schallamach waves of polydimethylsiloxane film/substrate bilayer structures with three substrate stiffnesses regulated by porosities are investigated by setting up in-situ sliding tests and establishing finite element models with mixed-mode cohesive contact. Inhomogeneity in microcontact stiffness disrupts the continuity and synchronization of the Schallamach waves, resulting in non-periodic fluctuations in the contact force. The buckling phenomenon of the film structure marks the transition from stick to slip. This buckling induces a shift at the crack front from normal compressive stress to tensile stress, leading to mixed-mode damage.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110358"},"PeriodicalIF":6.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578781","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":"Efficacy of high-performance epoxy resin as a binder to replace eco-unfriendly phenolic resins in Cu-free brake pads","authors":"Bhaskaranand Bhatt , Umesh Marathe , Navnath Kalel , Jayashree Bijwe","doi":"10.1016/j.triboint.2024.110359","DOIUrl":"10.1016/j.triboint.2024.110359","url":null,"abstract":"<div><div>This research explored high-performance epoxy resin (EPR) for the first time as a binder in the formulation of brake pads to overcome the limitations of phenolic resins (short shelf life, harmful emissions, etc.) and compared them to phenolic pads to determine their potential. EPRs offered higher heat resistance, lower density, post-curing free, and longer shelf life. Brake pads (15%, 20%, and 25% epoxy, and 20 vol% phenolic) were assessed for physical, mechanical, thermal, tribological, and noise - vibration (NV) properties. The findings revealed promising tribological and NV performance for epoxy pads, suggesting EPR has the potential to replace phenolic resins in the friction industry.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110359"},"PeriodicalIF":6.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660500","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}
Zhenting Zhang , Yan Jin Lee , Qi Yan , Hao Wang , Zhen Tong , Xiangqian Jiang
{"title":"Anisotropy and symmetry in the elastoplastic deformation of single crystals under scratching: Unravelling the microscopic deformation mechanisms","authors":"Zhenting Zhang , Yan Jin Lee , Qi Yan , Hao Wang , Zhen Tong , Xiangqian Jiang","doi":"10.1016/j.triboint.2024.110341","DOIUrl":"10.1016/j.triboint.2024.110341","url":null,"abstract":"<div><div>The nanoscratch test, as an established technique for assessing material tribological properties has received significant attention. However, the symmetry and anisotropy in scratching performances as well as the quantitative correlation between the orientation-dependent deformation and inherent microscopic deformation mechanism remain unexplored. Herein, crystal plasticity simulations can quantitatively capture scratching forces, elastic recovery, and surface pile-ups, as well as accurately describe inner deformation fields and lattice rotation patterns, as confirmed by experimental results. The simulation results reveal that surface pile-up and elastic recovery mappings on (001)-, (011)-, and (111)-oriented samples exhibit eight-fold, four-fold, and six-fold symmetries, respectively. The orientation-dependent location and intension of both slip activities and lattice rotation, determine the features of macroscopic elastoplastic deformation under scratching.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110341"},"PeriodicalIF":6.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552999","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}
Jiadong Shi , Guozheng Ma , Guolu Li , Zhen Li , Haichao Zhao , Cuihong Han , Haidou Wang
{"title":"Evolution of high vacuum tribological performance of lead-doped hydrogenated diamond-like carbon coatings after atomic oxygen and ultraviolet irradiation","authors":"Jiadong Shi , Guozheng Ma , Guolu Li , Zhen Li , Haichao Zhao , Cuihong Han , Haidou Wang","doi":"10.1016/j.triboint.2024.110356","DOIUrl":"10.1016/j.triboint.2024.110356","url":null,"abstract":"<div><div>Pb/H-DLC coatings with varying Pb content were deposited using a unbalanced magnetron sputtering system, and their tribological properties were tested in vacuum. For the two coatings exhibiting superior performance, the surface damage caused by space irradiation was investigated in ground-simulated space environments, including atomic oxygen (AO) erosion and ultraviolet (UV) irradiation. The irradiation damage and friction mechanisms were analyzed using surface/interface characterization techniques. The results reveal that the hydrogen content and the ratio of I<sub>D</sub>/I<sub>G</sub> in the Pb/H-DLC coatings initially decrease and then increase with increasing the Pb content. The Pb/H-DLC coatings show improved mechanical and vacuum tribological properties when the Pb content is 0 at% and 2.4 at%. The lowest average friction coefficient is 0.014, and the lowest wear rate is 3.8 × 10<sup>−8</sup> mm<sup>3</sup>N<sup>−1</sup>m<sup>−1</sup>. AO erosion induces graphitization and oxidation on the Pb/H-DLC coating surfaces, and the tribological properties of coating are deteriorated, while Pb doping effectively mitigates damage to the coatings' surface properties caused by AO erosion. The reduction in friction coefficient of the Pb/H-DLC coatings after UV irradiation can be mainly attributed to the formation of a soft layer consisting of HO-C<img>O groups on the surface due to irradiation.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110356"},"PeriodicalIF":6.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535696","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":"Molecular dynamics simulation and machine learning prediction of tribological properties of graphene solid-liquid two-phase lubrication system","authors":"Feng Qiu, Hui Song, Zhiquan Yang, Ziyan Lu, Mingliang Jiang, Xianguo Hu","doi":"10.1016/j.triboint.2024.110347","DOIUrl":"10.1016/j.triboint.2024.110347","url":null,"abstract":"<div><div>The influence of solid-liquid interaction between graphene and base oil on lubrication performance and mechanism still lacks insight. This paper fully considered contact pressure, differences in base oil chain length, and surface roughness characteristics, the tribological properties and lubrication mechanism of graphene oil lubrication system under different lubrication regimes were revealed by molecular dynamics simulations, and frictional wear was predicted based on four machine learning algorithms. The results indicated that under fluid lubrication regimes, the increase in base oil chain length and contact pressure deteriorated lubrication performance, which was attributed to the long-chain base oils enhanced the interlayer sliding resistance at the solid-liquid interface and adsorbed on the friction pair surface to form a thicker solid-like film, while the high contact pressure induced an increase in lubricant viscosity and internal stress. Under boundary lubrication, increased chain length improved lubrication while contact pressure aggravated frictional wear. Attributed to long-chain base oils increased oil film thickness and strength, improved graphene bending wrinkles and lubricant fluidity, and facilitated lubrication state transitions. However, high contact pressure showed the opposite trend, resulting in worsening lubrication performance. Moreover, the ensemble learning algorithm exhibited optimal friction (<em>R</em><sup>2</sup> =0.968) and wear (<em>R</em><sup>2</sup> =0.951) prediction capabilities.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110347"},"PeriodicalIF":6.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552998","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}
Suyang Li , Liye Zhang , Xianna Meng , An Yan , Wanglin Chen
{"title":"Enhancing cutting performance of micro-textured and coated tool by synergistically improving coating adhesion strength and debris capture-storage capacities","authors":"Suyang Li , Liye Zhang , Xianna Meng , An Yan , Wanglin Chen","doi":"10.1016/j.triboint.2024.110357","DOIUrl":"10.1016/j.triboint.2024.110357","url":null,"abstract":"<div><div>A TiAlN-coating with laser-induced depth-graded micro-textured substrate was produced by combination of ultra-fast laser and vacuum cathodic arc. The depth-graded micro-textures (DGMTs) with gradual changes in depth improve synergistically coating adhesion strength and debris capture-storage capacities, showing a better adaptability with TiAlN coating as compared to the single-scale MTs with a same size. In addition, the DGMTs can produce additional cuttings on wear counterpart, obtaining a higher material removal rate. The DGMTs parallel to and vertical to the main cutting edge (named as DGMTs-P and DGMTs-V, respectively) on flank face were carried out to high-speed dry cut precipitation hardening stainless steel. The tool lifespan are: TiAlN<TiAlN/DGMTs-P<TiAlN/DGMTs-V. The wear mechanisms for the TiAlN/DGMTs tools are shown.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110357"},"PeriodicalIF":6.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561086","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}
Mengdan Wang , Yuxuan Zhou , Bingli Pan , Lulu Pei , Liming Zhu , Yuanyuan Feng , Honggang Wang
{"title":"Tribological performances of epoxy resin reinforced by a novel biomass intelligent \"pool-channel\" oil storage and delivery system","authors":"Mengdan Wang , Yuxuan Zhou , Bingli Pan , Lulu Pei , Liming Zhu , Yuanyuan Feng , Honggang Wang","doi":"10.1016/j.triboint.2024.110355","DOIUrl":"10.1016/j.triboint.2024.110355","url":null,"abstract":"<div><div>Herein, a novel strategy of oil storage and transportation in polytetrafluoroethylene/porous polylactic acid/polydopamine/rapeseed pollen (diatomaceous earth)/paraffin wax ternary skeleton (PTFE/PPLA/PDA/POL(DE)PW) was developed to enhance the tribological performances of epoxy resin (EP). Importantly, a new biomass “pool-channel” structure was established using PPLA as the oil channel and DE or POL as the oil pool. The addition of biomass “pool-channel” structure to EP matrices can result bifunctional EP composites with self-lubricating and self-healing properties. In addition, experimental and theoretical calculations have shown the successful construction of intelligent \"pool channels\" with high oil content, high oil retention, release/reabsorption of lubricants. Compared with pure EP, the friction coefficient and specific wear rate of the novel epoxy composite were reduced by up to 85.46 % and 94.25 %, respectively.</div></div>","PeriodicalId":23238,"journal":{"name":"Tribology International","volume":"202 ","pages":"Article 110355"},"PeriodicalIF":6.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539480","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}