Wear最新文献_第9页

Current-carrying lubricating behavior of gallium-based liquid metal for Cu/Al tribo-pair

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-19 DOI: 10.1016/j.wear.2024.205715

Xuhu Zhang , Jiqiang Ma , Jie Guo , Juanjuan Chen , Hui Tan , Jun Cheng , Shengyu Zhu , Jun Yang

引用次数: 0

Study of the surface texture evolution and friction degradation in asphalt pavements during wear process

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-18 DOI: 10.1016/j.wear.2024.205714

Ziye Ma , Hainian Wang , Yandi Zhang , Denis Jelagin , Bing Hui

{"title":"Study of the surface texture evolution and friction degradation in asphalt pavements during wear process","authors":"Ziye Ma , Hainian Wang , Yandi Zhang , Denis Jelagin , Bing Hui","doi":"10.1016/j.wear.2024.205714","DOIUrl":"10.1016/j.wear.2024.205714","url":null,"abstract":"<div><div>Asphalt pavements constitute an important part of global transportation infrastructure, and their surface texture directly impact driving safety and comfort. Understanding the evolution of surface texture during wear and its effect on friction degradation is essential for pavement maintenance and safety assessment. This study conducted accelerated wear tests on three typical asphalt pavements (AC-13, SMA-13, and OGFC-13) using a self-developed indoor plate accelerated load wear tester (PALWT). A 3D laser scanner and a dynamic friction tester were used for pavement surface modeling and friction measurement. Based on the ISO 25178-2 standard, areal field parameters and functional volume parameters were innovatively introduced into the pavement wear quantification system to reveal the wear mechanisms of material loss and transfer. Results showed that the macrotexture characteristics of the pavement shifted from rough to flat after wear, with peak features gradually disappearing and texture directionality transitioning from multi-directional to the traffic direction. Wear caused a decrease in material at the surface peaks and valley areas while accumulating material in the core area. The dynamic friction coefficient (DFT40, DFT60, and DFT80) of asphalt pavements initially increased (peaking at around 3000 wear cycles) before decreasing and eventually stabilizing. Open-graded and gap-graded pavements generally outperform dense-graded pavements in terms of friction retention. Peak material volume (Vmp) and valley void volume (Vvv) effectively reflected material redistribution during wear across peak, core to valley, showing a strong correlation with skid resistance. Mean peak curvature (Spc) significantly improves skid resistance at low to medium speeds, while texture aspect ratio (Str) becomes critical under high-speed conditions by ensuring stable multidirectional tire-road interaction.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"564 ","pages":"Article 205714"},"PeriodicalIF":5.3,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092075","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

Tribological property of AgNi-CNTs composites under electric current

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-17 DOI: 10.1016/j.wear.2024.205712

De-Long Huang , Jin-Kun Xiao , Chen Wang , Zhen-Zhong Zhang , Juan Chen , Ai-Kun Li , Chao Zhang

{"title":"Tribological property of AgNi-CNTs composites under electric current","authors":"De-Long Huang , Jin-Kun Xiao , Chen Wang , Zhen-Zhong Zhang , Juan Chen , Ai-Kun Li , Chao Zhang","doi":"10.1016/j.wear.2024.205712","DOIUrl":"10.1016/j.wear.2024.205712","url":null,"abstract":"<div><div>Sliding electrical contacts play a crucial role in many electrical and mechanical devices, allowing for a stable electrical connection between two relatively moving surfaces. The design and material selection for sliding electrical contacts are vital for ensuring the reliability and performance of the equipment. The AgNi-CNTs composites are prepared by powder metallurgy and hot extrusion. The influences of CNTs content and electric currents on their tribological properties are investigated. The results show that the hardness of the composites increases with the addition of CNTs, which is attributed to the dispersion strengthening by the CNTs and the grain refinement strengthening by the smaller Ni particles. The friction coefficient and wear rate of the AgNi-CNTs composites significantly decrease with an increase in the CNTs content, indicating that CNTs can effectively serve as a lubricant and improve wear resistance. The wear rate of the composites is much higher at 1 A than at 0.1 A, which is due to the arcs generated when current flows through the contact interface, showing a combination of electrical and mechanical wear. The lubricating effect of CNTs facilitates the formation of a uniform transfer layer on the CuBe sheet. High current promotes the formation of a thicker transfer layer, which is due to the softening of the AgNi-CNTs composites caused by Joule heating.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"564 ","pages":"Article 205712"},"PeriodicalIF":5.3,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143140218","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

Tribological behavior of directed energy-deposited 316L stainless steel and its ceramic reinforced composite under dry sliding conditions

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-16 DOI: 10.1016/j.wear.2024.205710

Sourav Kumar , Shubham Chandra , Upadrasta Ramamurty , K. Eswar Prasad

{"title":"Tribological behavior of directed energy-deposited 316L stainless steel and its ceramic reinforced composite under dry sliding conditions","authors":"Sourav Kumar , Shubham Chandra , Upadrasta Ramamurty , K. Eswar Prasad","doi":"10.1016/j.wear.2024.205710","DOIUrl":"10.1016/j.wear.2024.205710","url":null,"abstract":"<div><div>The dry sliding wear behavior of directed energy deposited (DED) 316L stainless steel and its TiB<sub>2</sub>-ceramic reinforced composite (CRC) is investigated using a pin-on-disc tribometer and compared against wrought 316L alloy. The experimental results show that DED 316L exhibits the lowest wear rate among the three samples, followed by DED 316L + TiB<sub>2</sub> composite and the wrought 316L alloy. The morphologies of the worn-out surfaces indicate severe wear (characterized by deeper and wider abrasive groves) in wrought 316L, while mild wear in the case of DED 316L. A thorough examination of the subsurface deformation zones using a scanning electron microscope and electron-back scattered diffraction shows severe distortion of cells just underneath the wear surface and excessive rotation of the grains. Further, the nanoindentation experiments in the subsurface deformation zones reveal softening in the deformed layers of wrought 316L and DED 316L + TiB<sub>2</sub> samples. The cellular sub-grain morphology inherent to the DED 316L samples is found to be beneficial for wear resistance as opposed to the TiB<sub>2</sub> enriched cell boundaries of the DED 316L + TiB<sub>2</sub> composite. The results are discussed with reference to the microstructure, texture and prevalent wear mechanisms among the samples.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"564 ","pages":"Article 205710"},"PeriodicalIF":5.3,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143140212","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

Numerical sealing performance assessments of PTFE rotary lip seals based on the elasto-hydrodynamic analysis with the consideration of asperity interactions and accelerated wear experimental validations

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-15 DOI: 10.1016/j.wear.2024.205706

T.-C. Huang , C.-Y. Lin , K.-C. Liao

引用次数: 0

Failure mechanism analysis of electroplated chromium coating in repeated scratch tests under subcritical loads

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-13 DOI: 10.1016/j.wear.2024.205708

Yifei Wang , Xinchang Hu , Xuesheng Shi , Yang Yuan , Jie Gao , Youqiang Zhang

{"title":"Failure mechanism analysis of electroplated chromium coating in repeated scratch tests under subcritical loads","authors":"Yifei Wang , Xinchang Hu , Xuesheng Shi , Yang Yuan , Jie Gao , Youqiang Zhang","doi":"10.1016/j.wear.2024.205708","DOIUrl":"10.1016/j.wear.2024.205708","url":null,"abstract":"<div><div>Unlike traditional progressive scratch tests, which gradually increase the load to the critical failure level, repeated scratch tests assess the failure behavior of a coating under the repeated application of subcritical loads. It typically provides a more accurate representation of the actual application conditions of a well-designed coating system, where overcritical conditions are not commonly encountered. In this study, the failure behavior of electroplated chrome coating under subcritical loads was evaluated through repeated scratch tests. The subcritical loads correspond to 20 %, 40 %, and 60 % of the critical load at which the coating experiences significant spalling. The results show that the coating exhibits different failure modes in repeated scratch tests compared to progressive scratch tests, in the following order: tensile crack, coating internal delamination, small spalling pit, and large spalling pit. The reason for this difference arises from the repeated loading in the repeated scratch test, and coating failure is influenced by the repeated frictional action of the indenter, which can be considered a cyclic wear test at low loads. The cutting and plasticity ratio shows that there are two deformation mechanisms, micro-plowing and micro-cutting, for scribing coating by the indenter and that the micro-cutting mechanism is dominant in the scribing process. As the load and the number of cycles increase, the proportion of micro-cutting continues to rise. Repeated scratch tests at subcritical loads provide a more comprehensive assessment of failure at different loads than progressive scratch tests and give clearer insights into the coating failure formation process.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"564 ","pages":"Article 205708"},"PeriodicalIF":5.3,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143140173","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

Cryogenic cyclic aging effect on thermal, mechanical and tribological performance of PEEK-based materials

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-13 DOI: 10.1016/j.wear.2024.205709

Maksim Nikonovich , Amilcar Ramalho , Nazanin Emami

{"title":"Cryogenic cyclic aging effect on thermal, mechanical and tribological performance of PEEK-based materials","authors":"Maksim Nikonovich , Amilcar Ramalho , Nazanin Emami","doi":"10.1016/j.wear.2024.205709","DOIUrl":"10.1016/j.wear.2024.205709","url":null,"abstract":"<div><div>The impact of cryogenic cyclic aging on the thermal, mechanical, and tribological properties of polyetheretherketone (PEEK) and its composites was investigated to reveal the mechanisms and factors affecting the durability of high-performance materials under prolonged exposure to extreme environments. Cryogenic cyclic aging involved twelve cycles, each consisting of 6-day aging in liquid nitrogen (−196 °C) and 1-day in oven at 40 °C in normal ambient (relative humidity ∼30 %), mimicking operational conditions of cryogenic systems. Tribological tests were conducted using a ball-on-disk configuration with a stainless steel (SS 316L) ball counterface. Tests were performed at 25 °C in air and high vacuum (10⁻⁵ Pa). The thermal stability of the materials was slightly affected. Thermal stresses developed during aging led to polymer embrittlement. Fracture toughness decreased by approximately 22 % after cyclic aging. Abrasive wear increased significantly for unreinforced PEEK, while PEEK composites showed a rise in adhesive wear with prolonged aging. In air, the wear rate increase reached 510 %, whereas in vacuum, some compositions exhibited a wear rate reduction of up to 56 %.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"564 ","pages":"Article 205709"},"PeriodicalIF":5.3,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092074","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

On the tool wear reducing mechanism of Zn in brass alloys

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-12 DOI: 10.1016/j.wear.2024.205707

F. Ekholm, J. Heinrichs Lindgren, U. Wiklund, S. Jacobson

{"title":"On the tool wear reducing mechanism of Zn in brass alloys","authors":"F. Ekholm, J. Heinrichs Lindgren, U. Wiklund, S. Jacobson","doi":"10.1016/j.wear.2024.205707","DOIUrl":"10.1016/j.wear.2024.205707","url":null,"abstract":"<div><div>Cemented carbide (WC-Co) tools are used in the zipper manufacturing industry to shear a pre-formed Cu-Zn alloy wire (15 wt% Zn) into zipper elements. Somewhat, surprisingly, the much softer Cu-Zn alloy is capable of wearing down the cemented carbide. Moreover, the carbide and the binder phase are worn to an even level, which is generally not expected if abrasive wear was dominant, due to their vast difference in hardness. Instead, tribochemical wear is thought to be the primary wear mechanism behind these phenomena. Tribological tests, mimicking the wear of the tools used in zipper manufacturing, have shown that the wear rate of the cemented carbide increases drastically when Zn is omitted from the work-material. In the present study, the tool wear when sliding against Cu-Zn alloys containing 0.6 and 3.0 wt% Zn, respectively, is investigated to gain a deeper understanding of the effect that small amounts of Zn have on the wear of cemented carbide. Tests are performed in a sliding test rig and the wear is analysed using scanning electron microscopy, energy dispersive X-ray spectroscopy and optical surface profilometry.</div><div>The cemented carbide is gradually worn when sliding against both Cu-Zn alloys, and the wear is primarily concentrated to the periphery of the contact. Large amounts of oxidized Zn are found on the cemented carbide in regions of low wear, indicating that Zn can protect the cemented carbide. The wear rate of the cemented carbide is lower with more Zn in the work-material. Interestingly, as little as 0.6 wt% Zn is enough to more than half the wear rate compared to when sliding against pure Cu.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"564 ","pages":"Article 205707"},"PeriodicalIF":5.3,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143140210","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

Erosion wear resistance of graphite/epoxy resin coating under strong windblown sand and grit flow

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-12 DOI: 10.1016/j.wear.2024.205700

Kai Zhang , Yonghui Yu , Haitao Zhao , Bo Yang , Aojun Guo , Hailong Zhang

{"title":"Erosion wear resistance of graphite/epoxy resin coating under strong windblown sand and grit flow","authors":"Kai Zhang , Yonghui Yu , Haitao Zhao , Bo Yang , Aojun Guo , Hailong Zhang","doi":"10.1016/j.wear.2024.205700","DOIUrl":"10.1016/j.wear.2024.205700","url":null,"abstract":"<div><div>Coating protection offers a solution to corrosion problems experienced by steel structures. However, when confronted with robust Gobi winds, these coatings are susceptible to erosion caused by windblown sand and grit flow (WSGF), which compromises their protective performance and durability. To address this issue, in this study, we explored the resilience of a specially formulated graphite/epoxy resin coating subjected to rigorous airflow–sand jetting tests to gauge its erosion resistance against WSGF. A clear pattern emerged from the findings: an escalation in the WSGF velocity and grit flux directly correlated with an increase in the erosion rate of the coating, with the pinnacle of erosion occurring conspicuously at a WSGF attack angle of 45°. Seeking a deeper understanding of the erosion mechanics at play, we conducted a meticulous analysis employing a stereo microscope to scrutinize the nuanced microlevel erosion damage and juxtapose it with macrolevel manifestations. The initial observational journey revealed a distinctive pattern: at low WSGF impact angles, the coating predominantly sustained damage in the form of cutting; in contrast, as the WSGF attack angle broadened, the damage morphed into erosion pits and furrows, with notably more severe erosion emanating from larger grit particles under strong-wind scenarios. To augment this research, a predictive model for estimating the erosion rate of coatings on steel structure subject to WSGF was developed and validated for its reliability and applicability.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"564 ","pages":"Article 205700"},"PeriodicalIF":5.3,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143140171","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

Novel ingredients for sustainable brake pad friction materials: Benzoxazine resins and rice husk

IF 5.3 1区工程技术

Wear Pub Date : 2024-12-12 DOI: 10.1016/j.wear.2024.205698

Davide Carlevaris , Ana Paula Gomes Nogueira , Domenico Antonio Rita , Stefano Candeo , Luca Fambri , Cinzia Menapace , Giovanni Straffelini

{"title":"Novel ingredients for sustainable brake pad friction materials: Benzoxazine resins and rice husk","authors":"Davide Carlevaris , Ana Paula Gomes Nogueira , Domenico Antonio Rita , Stefano Candeo , Luca Fambri , Cinzia Menapace , Giovanni Straffelini","doi":"10.1016/j.wear.2024.205698","DOIUrl":"10.1016/j.wear.2024.205698","url":null,"abstract":"<div><div>This work explores two approaches aimed at improving the sustainability of automotive brake systems: incorporating rice husk as renewable raw material and using benzoxazine resins as an alternative binder in brake pad friction material formulations. The automotive brake system generates wear and PM emission during operation, contributing significantly to the traffic-related pollution. The need for the brake industry to address these emissions has been further promoted by the EURO 7 legislation, prompting a shift towards more sustainable brake systems. Rice husk and benzoxazine resins were chosen considering some attractive properties related to the friction material application but also to an actual industrial implementation, such as their favourable storing requirements. Four different friction material compositions underwent tribological testing on a reduced-scale dynamometer, also monitoring the airborne emissions. The contact surfaces were characterized through SEM, EDXS and XRD analysis. RH showed promising results towards a commercial application, and benzoxazine resin meaningfully lowered the wear of the friction material.</div></div>","PeriodicalId":23970,"journal":{"name":"Wear","volume":"564 ","pages":"Article 205698"},"PeriodicalIF":5.3,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143140170","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