Friction最新文献_第8页

Influence and optimization of swirler parameters on elbow wear of deep coal fluidization pipeline transportation system 漩涡器参数对深层煤炭流化管道输送系统弯头磨损的影响和优化

IF 6.8 1区工程技术

Friction Pub Date : 2024-03-12 DOI: 10.1007/s40544-023-0781-3

Shaodi Zhao, Jiusheng Bao, Shirong Ge, Zhongbin Wang, Yan Yin, Congguang Huang

引用次数: 0

Analysis of the discrete contact characteristics based on the Greenwood-Williamson model and the localization principle 基于格林伍德-威廉森模型和定位原理的离散接触特性分析

IF 6.8 1区工程技术

Friction Pub Date : 2024-02-02 DOI: 10.1007/s40544-023-0849-0

Anastasiya A. Yakovenko, Irina G. Goryacheva

引用次数: 0

Role of temperature in tribolayers in fretting wear of γ-TiAl alloy 温度在γ-钛铝合金摩擦磨损摩擦层中的作用

IF 6.8 1区工程技术

Friction Pub Date : 2024-02-02 DOI: 10.1007/s40544-023-0807-x

Yulei Yang, Hongfei Shang, Huiping Pei, Jimin Xu, Yi Liang, Minghui Pan

{"title":"Role of temperature in tribolayers in fretting wear of γ-TiAl alloy","authors":"Yulei Yang, Hongfei Shang, Huiping Pei, Jimin Xu, Yi Liang, Minghui Pan","doi":"10.1007/s40544-023-0807-x","DOIUrl":"https://doi.org/10.1007/s40544-023-0807-x","url":null,"abstract":"The formation of tribolayers may play significant influences on fretting wear. At elevated temperature, the adhesion among wear debris and the increased diffusion rate facilitate the formation of tribolayers. However, the intensification of oxidation at elevated temperature and the low diffusion rate in oxides may play an adverse role. The present study aims to investigate the role of temperature in tribolayers in fretting wear using a γ-TiAl alloy. Scanning electron microscope, energy dispersive spectrometer, Raman spectrometer, transmission electron microscope and nanoindentation were utilized to investigate the wear debris, tribolayers, and wear scars. The fretting tests showed that, compared with that at room temperature (RT) and 350 °C, significant reduction in wear rate and decrease in the fluctuation of friction coefficient occurred at 550 and 750 °C. It was further revealed that when temperature raised from room temperature (RT) to 750 °C, the oxidation of the wear debris increased slightly and the diffusion coefficients increased prominently, which facilities the formation of well tribo-sintered tribolayers. The well tribo-sintered tribolayers presented homogenous structure, nanocrystalline grains with excellent mechanical properties, and resulted in the improvement in the fretting wear resistance of the γ-TiAl alloy at 550 and 750 °C.","PeriodicalId":12442,"journal":{"name":"Friction","volume":null,"pages":null},"PeriodicalIF":6.8,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139710682","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

Experimental study on boundary lubricity of superficial area of articular cartilage and synovial fluid 关节软骨表层和滑液边界润滑性实验研究

IF 6.8 1区工程技术

Friction Pub Date : 2024-02-02 DOI: 10.1007/s40544-023-0822-y

Wenxiao Li, Takehiro Morita, Yoshinori Sawae

{"title":"Experimental study on boundary lubricity of superficial area of articular cartilage and synovial fluid","authors":"Wenxiao Li, Takehiro Morita, Yoshinori Sawae","doi":"10.1007/s40544-023-0822-y","DOIUrl":"https://doi.org/10.1007/s40544-023-0822-y","url":null,"abstract":"The boundary lubrication mechanism at the articulating surface of natural synovial joints has been the subject of much discussion in tribology. In this study, to elucidate the lubricating function of the superficial area of articular cartilage and synovial fluid (SF), cartilage specimens were processed with four different treatments: gentle and severe washing with detergent, incubation in NaCl solution, and trypsin digestion to selectively remove certain constituents from the cartilage surface. Subsequently, the frictional characteristics were examined in phosphate-buffered saline (PBS) and SF against glass. Angularly reciprocating sliding tests with a spherical glass probe and square articular cartilage specimens were performed at low contact loads in the mN range to extract the frictional behavior in the superficial area of the cartilage specimens. Meanwhile, the cartilage surface was observed to confirm the effects of treatments on the morphology of the cartilage surface using a fluorescence microscope and water-immersion methods. The coefficient of friction (COF) of the prepared cartilage specimens was varied from 0.05 to over 0.3 in PBS. However, a certain group of cartilage specimens exhibited a low COF of less than 0.1 with limited variation. For the low COF group of specimens, all four treatments increased the COF in PBS to different extents, and fluorescence microscopy revealed that the integrity of the cartilage surface was deteriorated by treatments. This means that the intact cartilage surface had lubricating constituents to maintain low friction, and the removal of such constituents resulted in the loss of the intrinsic boundary lubricity of the cartilage surface. The variation in the COF of the cartilage specimens was suppressed in SF because it had a clear boundary lubrication effect on the cartilage surface. The lubricating effect of SF could be confirmed even after degenerative treatment.","PeriodicalId":12442,"journal":{"name":"Friction","volume":null,"pages":null},"PeriodicalIF":6.8,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139710678","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

Friction and wear performance of polyether ether ketone (PEEK) polymers in three lubrication regimes 聚醚醚酮 (PEEK) 聚合物在三种润滑条件下的摩擦和磨损性能

IF 6.8 1区工程技术

Friction Pub Date : 2024-02-02 DOI: 10.1007/s40544-023-0780-4

Davide Massocchi, Nora Lecis, Marco Lattuada, Davide Scaglia, Steven Chatterton, Paolo Pennacchi

{"title":"Friction and wear performance of polyether ether ketone (PEEK) polymers in three lubrication regimes","authors":"Davide Massocchi, Nora Lecis, Marco Lattuada, Davide Scaglia, Steven Chatterton, Paolo Pennacchi","doi":"10.1007/s40544-023-0780-4","DOIUrl":"https://doi.org/10.1007/s40544-023-0780-4","url":null,"abstract":"This experimental study investigates the friction and wear of three coatings commonly used in industrial applications, particularly in hydrodynamic bearings. The three materials under investigation were Babbitt, polyether ether ketone (PEEK) reinforced with 15% carbon fibers, and PEEK reinforced with 20% carbon fibers. The first polymer material was extruded, while the other was produced by fused deposition modelling (FDM). The materials were subjected to sliding tests in a pin-on-disc configuration, with a steel ball serving as the counter surface. The tests were conducted at room temperature, with a load of 10 N and under three different lubrication conditions: dry, grease, and oil. The linear speed was set at 0.3 m/s for the dry and semi-solid lubrication tests, while for the oil tests, the speed was set at 0.25 m/s. The greases used had consistency grades of NGLI 000 and NGLI 2. An ISO VG 68 circulation oil was used for the oil lubrication tests. Additionally, thermodynamic analyses were performed under the most severe conditions (i.e., dry) to investigate the steel-Babbitt and steel-PEEK contact.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":null,"pages":null},"PeriodicalIF":6.8,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139660265","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

Predicting the coefficient of friction in a sliding contact by applying machine learning to acoustic emission data 通过对声学发射数据进行机器学习来预测滑动接触中的摩擦系数

IF 6.8 1区工程技术

Friction Pub Date : 2024-02-02 DOI: 10.1007/s40544-023-0834-7

Robert Gutierrez, Tianshi Fang, Robert Mainwaring, Tom Reddyhoff

引用次数: 0

Origin and evolution of false brinelling and fretting corrosion under rolling conditions 轧制条件下假卤化和摩擦腐蚀的起源和演变

1区工程技术

Friction Pub Date : 2024-01-12 DOI: 10.1007/s40544-023-0768-0

Xin Jia, Lu Huang, Miao Sun, Wenbin Li

引用次数: 0

Experimental study on the feasibility of alternative materials for tilting pad thrust bearings operating in transition to mixed friction 倾斜垫推力轴承过渡到混合摩擦运行时替代材料可行性的实验研究