Friction最新文献_第9页

Study on the preparation and fretting behavior of bonded oriented MoS2 solid lubricant coating 键合定向 MoS2 固体润滑涂层的制备和摩擦行为研究

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-06 DOI: 10.1007/s40544-024-0895-2

Liangliang Xiong, Mengxue Wu, Xiaoqiang Fan, Minhao Zhu

{"title":"Study on the preparation and fretting behavior of bonded oriented MoS2 solid lubricant coating","authors":"Liangliang Xiong, Mengxue Wu, Xiaoqiang Fan, Minhao Zhu","doi":"10.1007/s40544-024-0895-2","DOIUrl":"https://doi.org/10.1007/s40544-024-0895-2","url":null,"abstract":"The bonded MoS2 solid lubricant coating is an effective measure to mitigate the fretting wear of AISI 1045 steel. In this work, the amino functionalized MoS2 was protonated with acetic acid to make the MoS2 positively charged. The directional arrangement of protonated MoS2 in the coating was achieved by electrophoretic deposition under the electric field force. The bonded directionally aligned MoS2 solid lubricant coating showed high adaptability to various loads and excellent lubrication performance under all three working conditions. At a load of 10 N, the friction coefficient and wear volume of the coating with 5 wt% protonated MoS2 decreased by 20.0% and 37.2% compared to the pure epoxy coating, respectively, and by 0.07% and 16.8% than the randomly arranged MoS2 sample, respectively. The remarkable lubricating properties of MoS2 with directional alignment were attributed to its effective load-bearing and mechanical support, barrier effect on longitudinal extension of cracks, and the formation of a continuous and uniform transfer film.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":"57 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141553469","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 between a single platelet and fibrinogen 单个血小板与纤维蛋白原之间的摩擦力

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-06 DOI: 10.1007/s40544-024-0886-3

Yuhe Wang, Yan Li, Shuguang Zhang, Haosheng Chen, Yongjian Li

引用次数: 0

The effect of ethanol fuel dilution on oil performance and MoDTC tribofilms formation and composition 乙醇燃料稀释对机油性能以及 MoDTC 三膜形成和组成的影响

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-05 DOI: 10.1007/s40544-024-0880-9

Juan Ruiz-Acero, Felipe Kessler, Henara Costa, Tiago Cousseau

{"title":"The effect of ethanol fuel dilution on oil performance and MoDTC tribofilms formation and composition","authors":"Juan Ruiz-Acero, Felipe Kessler, Henara Costa, Tiago Cousseau","doi":"10.1007/s40544-024-0880-9","DOIUrl":"https://doi.org/10.1007/s40544-024-0880-9","url":null,"abstract":"Ethanol has emerged as a promising alternative to fossil fuels, but its use can lead to significant dilution in lubricants, particularly during cold start or heavy traffic. This dilution can affect the performance of additives, including friction modifiers like molybdenum dithiocarbamate (MoDTC), which are designed to reduce friction under extreme contact conditions. Prior research suggests that ethanol may impact the performance of MoDTC, prompting this study’s goal to investigate the effects of ethanol on MoDTC tribofilms and their friction response under boundary lubrication conditions. Therefore, reciprocating tribological tests were performed with fully formulated lubricants containing MoDTC with varying ethanol concentrations. The results indicate that a critical ethanol dilution level inhibits friction reduction by MoDTC activation, resulting in friction coefficients (COFs) similar to the base oil. Surfaces tested with simple mixtures of polyalphaolefin (PAO) + MoDTC showed increased COFs with added ethanol. Analysis of tested surfaces using Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and X-ray absorption spectroscopy near the edge structure (XANES) revealed the presence of sulfates, MoO3, MoS2, and MoSxOy compounds in the tribofilms formed on the surfaces, with and without ethanol diluted in the lubricant. However, the addition of ethanol increased the sulfates and MoO3 content of the tribofilms at the expense of friction-reducing compounds such as MoS2 and MoSxOy. These findings suggest that ethanol dilution in lubricants containing MoDTC creates an oxygen-rich interfacial medium that favors the formation of compounds with insufficient friction-reducing capabilities.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"21 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141546001","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

Unlocking wear resistance in an ultrastrong dual-phase high-entropy alloy by interface-constrained deformation of brittle Laves phases 通过脆性拉维斯相的界面约束变形，揭示超强双相高熵合金的耐磨性

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-05 DOI: 10.1007/s40544-024-0884-5

Fei Liang, Yixing Sun, Hongyuan Wan, Yong Li, Wenhao Lu, Ao Meng, Lei Gu, Zhaoping Luo, Yan Lin, Yaping Zhang, Xiang Chen

引用次数: 0

Impact of surface roughness on the coefficient of friction of polymer-on-polymer contacts for deflection pulley-rope systems in the lift industry 表面粗糙度对升降机行业偏转滑轮-绳索系统中聚合物-聚合物接触摩擦系数的影响

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-01 DOI: 10.1007/s40544-024-0881-8

Ainhoa Guinea, Andrea Aginagalde, Wilson Tato, Iñigo Llavori, Pablo Garcia, Leire Arraiago, Alaitz Zabala

引用次数: 0

Using fused filament fabrication to improve the tribocorrosion behaviour of 17-4 PH SS in comparison to other metal forming techniques 与其他金属成型技术相比，利用熔融长丝制造技术改善 17-4 PH SS 的摩擦腐蚀性能

IF 6.8 1区工程技术

Friction Pub Date : 2024-06-28 DOI: 10.1007/s40544-024-0885-4

Cristina García-Cabezón, Juan Alfonso Naranjo, Celia García-Hernández, Cristina Berges, Gemma Herranz, Fernando Martín-Pedrosa

{"title":"Using fused filament fabrication to improve the tribocorrosion behaviour of 17-4 PH SS in comparison to other metal forming techniques","authors":"Cristina García-Cabezón, Juan Alfonso Naranjo, Celia García-Hernández, Cristina Berges, Gemma Herranz, Fernando Martín-Pedrosa","doi":"10.1007/s40544-024-0885-4","DOIUrl":"https://doi.org/10.1007/s40544-024-0885-4","url":null,"abstract":"Fused filament fabrication (FFF) is one of the additive manufacturing processes which has gained more interest because of its simplicity and low-cost. This technology is similar to the conventional metal injection moulding (MIM) process, consisting of the feedstock preparation of metal powder and polymer binders, followed by layer-by-layer 3D printing (FFF) or injection (MIM) to create green parts and, finally, debinding and sintering. Moreover, both technologies provide near-dense parts. This work presents an in-depth study of the processing method’s influence. The porosity, microstructure, hardness, corrosion, and tribocorrosion behaviour are compared for 17-4 PH SS samples processed from powder by additive manufacturing using FFF and MIM, as well as conventional powder metallurgy (PM) samples. MIM samples exhibited the highest macro and microhardness, while corrosion behaviour was similar for both MIM and FFF samples, but superior in comparison to conventional PM samples. However, the FFF-as fabricated samples displayed a significant improvement in tribocorrosion resistance that could be explained by the higher proportion of delta ferrite and retained austenite in their microstructure.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":"18 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462599","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

Subsurface deformation mechanism and the interplay relationship between strength–ductility and fretting wear resistance during fretting of a high-strength titanium alloy 一种高强度钛合金的表面下变形机理以及脆化过程中强度-电导率与脆化耐磨性之间的相互作用关系

IF 6.8 1区工程技术

Friction Pub Date : 2024-06-28 DOI: 10.1007/s40544-024-0870-y

Yanlin Tong, Ke Hua, Haoyang Xie, Yue Cao, Zhuobin Huang, Zhenpeng Liang, Xiaolin Li, Hongxing Wu, Haifeng Wang

{"title":"Subsurface deformation mechanism and the interplay relationship between strength–ductility and fretting wear resistance during fretting of a high-strength titanium alloy","authors":"Yanlin Tong, Ke Hua, Haoyang Xie, Yue Cao, Zhuobin Huang, Zhenpeng Liang, Xiaolin Li, Hongxing Wu, Haifeng Wang","doi":"10.1007/s40544-024-0870-y","DOIUrl":"https://doi.org/10.1007/s40544-024-0870-y","url":null,"abstract":"Fretting wear damage of high-strength titanium fasteners has caused a large number of disastrous accidents. Traditionally, it is believed that both high strength and excellent ductility can reduce fretting wear damage. However, whether strength and ductility are contradictory or not and their appropriate matching strategy under the external applied normal stress (Fw) are still confusing problems. Here, by analyzing the subsurface-microstructure deformation mechanism of several samples containing various α precipitate features, for the first time, we design strategies to improve fretting damage resistance under different matching relation between Fw and the tensile strength of materials (Rm). It is found that when Fw is greater than Rm or Fw is nearly equivalent to Rm, the deformation mechanism mainly manifests as serious grain fragmentation of β and αGB constituents. Homogeneous deformation in large areas only reduces damage to a limited extent. It is crucial to improve the strength to resist cracking and wear, but it is of little significance to improve the ductility. However, when Fw is far less than Rm, coordinated deformation ability reflected by ductility plays a more important role. The deformation mechanism mainly manifests as localized deformation of β and αGB constituents (kinking induced by twinning and spheroidizing). A unique composite structure of nano-grained/lamellar layer and localized deformation transition layer reduces fretting damage by five times compared with a single nano-grained layer. Only when the strength is great enough, improving the plasticity can reduce wear. This study can provide a principle for designing fretting damage resistant alloys.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":"17 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462579","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 investigation on the anisotropy of friction property for dry and water-saturated rock 干燥和水饱和岩石摩擦特性各向异性的实验研究

IF 6.8 1区工程技术

Friction Pub Date : 2024-06-28 DOI: 10.1007/s40544-024-0868-5

Qing Yang, Mingming He, Jinrui Zhao, Mingchen Ding, Jing Wang

{"title":"Experimental investigation on the anisotropy of friction property for dry and water-saturated rock","authors":"Qing Yang, Mingming He, Jinrui Zhao, Mingchen Ding, Jing Wang","doi":"10.1007/s40544-024-0868-5","DOIUrl":"https://doi.org/10.1007/s40544-024-0868-5","url":null,"abstract":"Friction properties of rock are closely connected with the anisotropy. The anisotropy of rock friction can provide a valuable assessment for geotechnical and geological engineering. In this study, the rotary friction tests were conducted to analyze the water effect on the friction property and the friction anisotropy of the four types of rock. The drilling response model (DD-model) was employed to characterize the rotary friction behavior of the rocks. The parameters of this model include the three types of friction parameters: 1/ς, μ, and f, where 1/ς and μ are constant, and f is a variable. A quantitative method is proposed for assessing the anisotropy of rock friction. The results of the rotary friction tests indicate that the relation between torque force and thrust force conforms to the DD-model. The changes of two friction constants 1/ς and μ from dry state to water-saturated state suggest that the water effect on the friction strength of the rocks exhibits significant anisotropy. The friction strength determined by the friction variable f increases first, then decreases, and finally stabilizes with the increasing of depth. AIf is an anisotropy index calculated by the proposed method. The percentage difference of the average value of AIf between water-saturated and dry states shows the degree of the water effect on the friction anisotropy of the rocks, mudstone (MU) > granite (GR) > fine sandstone (FS) > argillaceous siltstone (AS). The quantitative model is hopefully constructed for characterizing the relation between the anisotropic friction strength of rock and the moisture state in future.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":"45 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462604","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

The effect of friction block hole configurations on the brake tribological performance of high-speed trains 摩擦片孔结构对高速列车制动器摩擦学性能的影响

IF 6.8 1区工程技术

Friction Pub Date : 2024-06-28 DOI: 10.1007/s40544-023-0855-2

Yuanke Wu, Wei Chen, Youguang Zhu, Zaiyu Xiang, Honghua Qian, Jiliang Mo, Zhongrong Zhou

{"title":"The effect of friction block hole configurations on the brake tribological performance of high-speed trains","authors":"Yuanke Wu, Wei Chen, Youguang Zhu, Zaiyu Xiang, Honghua Qian, Jiliang Mo, Zhongrong Zhou","doi":"10.1007/s40544-023-0855-2","DOIUrl":"https://doi.org/10.1007/s40544-023-0855-2","url":null,"abstract":"Three triangular friction block configurations are commonly employed in high-speed train brake systems, namely, unperforated, perforated configuration with one circular hole, and perforated with three circular holes. In this study, we adopted these friction block types to investigate the effect of perforated friction block configurations on the brake performance of high-speed trains based on a self-developed brake test rig. The results indicate the significant impact of the number of the holes on the wear behavior, temperature distribution, and vibration characteristics of the brake interface. The friction surface of the unperforated block is covered by wear debris, while the perforated blocks produce less wear debris. Furthermore, the one-hole block exhibits a more uniform temperature distribution and better vibration behavior than that with three holes. The friction brake is a dynamic process, during which separation and attachment between the pad and disc alternatively occur, and the perforated structure on the friction block can both trap and expel the wear debris.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":"180 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462483","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

Polymer transfer film formation from cryogenic to elevated temperatures 从低温到高温的聚合物转移膜形成

IF 6.8 1区工程技术

Friction Pub Date : 2024-06-25 DOI: 10.1007/s40544-024-0862-y

Kian Bashandeh, Vasilis Tsigkis, Ahmad Amiri, Pixiang Lan, Andreas A. Polycarpou

{"title":"Polymer transfer film formation from cryogenic to elevated temperatures","authors":"Kian Bashandeh, Vasilis Tsigkis, Ahmad Amiri, Pixiang Lan, Andreas A. Polycarpou","doi":"10.1007/s40544-024-0862-y","DOIUrl":"https://doi.org/10.1007/s40544-024-0862-y","url":null,"abstract":"This study reports on the tribological performance of aromatic thermosetting co-polyester (ATSP) and polyether ether ketone (PEEK)-based polymer composite coatings mixed with PTFE filler. The coatings were tested across a wide temperature range from −180 to 110 °C to simulate the environmental temperatures on Titan, Moon, and Mars, which are of particular interest for NASA’s future exploratory missions. An experimental setup was developed to conduct the pin-on-disk experiments under dry sliding conditions and extreme temperature and contact pressure. Transfer film formation and its characteristics were found to play significant roles in the tribological performance, and the characteristics of the film were temperature-dependent. The XPS and SEM analysis indicated the increase of the PTFE content in the transfer film as the temperature decreased to cryogenic conditions. The coefficient of friction did not follow a linear trend with temperature and was minimum at 110 °C and maximum at −180 °C. ATSP coating showed superior performance with lower friction and unmeasurable wear at all temperatures, whereas PEEK coating exhibited maximum wear at 25 °C followed by −180, and 110 °C.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"101 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141448421","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