Friction最新文献_第5页

L*—An index for evaluating long range performance of autonomous underwater vehicles (AUVs) L*-用于评估自动潜航器（AUV）远距离性能的指数

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-20 DOI: 10.1007/s40544-023-0842-7

Manfu Zhu, Liran Ma, Jianbin Luo

{"title":"L*—An index for evaluating long range performance of autonomous underwater vehicles (AUVs)","authors":"Manfu Zhu, Liran Ma, Jianbin Luo","doi":"10.1007/s40544-023-0842-7","DOIUrl":"https://doi.org/10.1007/s40544-023-0842-7","url":null,"abstract":"Autonomous underwater vehicles (AUVs) have various applications in both military and civilian fields. A wider operation area and more complex tasks require better overall range performance of AUVs. However, until recently, there have been few unified criteria for evaluating the range performance of AUVs. In the present work, a unified range index, i.e., L*, considering the cruising speed, the sailing distance, and the volume of an AUV, is proposed for the first time, which can overcome the shortcomings of previous criteria using merely one single parameter, and provide a uniform criterion for the overall range performance of various AUVs. After constructing the expression of the L* index, the relevant data of 49 AUVs from 12 countries worldwide have been collected, and the characteristics of the L* range index in different countries and different categories were compared and discussed. Furthermore, by analyzing the complex factors affecting the range index, methods to enhance the L* range index value, such as efficiency enhancement and drag reduction, have been introduced and discussed. Under this condition, the work proposes a unified and scientific criterion for evaluating the range performance of AUVs for the first time, provides valuable theoretical insight for the development of AUVs with higher performance, and then arouses more attention to the application of the cutting-edge superlubricity technology to the field of underwater vehicles, which might greatly help to accelerate the coming of the era of the superlubricitive engineering.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":"34 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141737066","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

Study on the influence of food emulsion components on its lubrication characteristics and smooth perception 食品乳液成分对其润滑特性和顺滑感的影响研究

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-16 DOI: 10.1007/s40544-024-0894-3

Shanhua Qian, Liang Wang, Ziyan Zheng, Qichen Tang, Da Bian

{"title":"Study on the influence of food emulsion components on its lubrication characteristics and smooth perception","authors":"Shanhua Qian, Liang Wang, Ziyan Zheng, Qichen Tang, Da Bian","doi":"10.1007/s40544-024-0894-3","DOIUrl":"https://doi.org/10.1007/s40544-024-0894-3","url":null,"abstract":"Due to the increasing risk of obesity and cardiovascular diseases caused by high-fat diets, low-fat foods have become a priority demand for consumers’ health. However, the smoothness perception and scientific assessment methods of the existing low-fat foods should be improved. In this study, three food emulsions were prepared, and their lubrication characteristics, sensory evaluation of smoothness, and electroencephalogram (EEG) signals were assessed to preliminarily investigate the effects of food emulsion components on their above characteristics. The results showed that fat substitute (FSU) and fat could significantly reduce coefficient of friction (CoF) of the food emulsions, with average CoF reduced by 28% and 63% compared to the original food emulsions. In addition, fat-enriched food emulsions continued to exhibit excellent lubrication characteristics after adding artificial saliva, with an average CoF reduced by 31.1% compared to that of the food emulsions without artificial saliva. Both FSU and fat improved the smoothness of food emulsions, and the lubricating properties of fat were more pronounced, with fat-enriched food emulsion which could provide a substantial improvement in smoothness compared to the fat-free food emulsion. Comparison of subjects’ EEG signals revealed that food emulsion with lower CoF and higher smoothness triggered higher P3 amplitudes and longer latencies. These findings provide better insights into the scientific evaluation of food texture and the development of low-fat foods.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"29 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141625105","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

C@Ag core–shell structure as lubricating additives towards high efficient lubrication 作为润滑添加剂的 C@Ag 核壳结构可实现高效润滑

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-11 DOI: 10.1007/s40544-023-0851-6

Dong Ao, Xiaoqiang Fan, Minhao Zhu

{"title":"C@Ag core–shell structure as lubricating additives towards high efficient lubrication","authors":"Dong Ao, Xiaoqiang Fan, Minhao Zhu","doi":"10.1007/s40544-023-0851-6","DOIUrl":"https://doi.org/10.1007/s40544-023-0851-6","url":null,"abstract":"Efficient cooperative lubrication can be achieved via the introduction of core–shell structure lubricant additives with hard core and soft shell, for obtaining the expected anti-wear performance from the structural changes in the friction process. In this study, C@Ag microspheres with a core–shell structure were prepared by the redox method with carbon spheres as the core and Ag nanoparticles as the shell. Their tribological behaviors as base oil (G1830) additive with different concentrations were investigated in detail. Compared with base oil, the addition of C@Ag particles at 0.5 wt% can reduce the coefficient of friction (COF) and wear volume (Wv) up to 15.5% and 88%, respectively. More importantly, C@Ag particles provide superior lubrication performance to single additive (like carbon sphere (CS) and Ag nanoparticle). C@Ag core–shell particles contribute to the formation of tribo-film by melt bonding of flexible Ag and carbon sphere (CS) toward excellent self-repair performance and high-efficiency lubrication. Hence, core–shell structural nanoparticles with hard-core and soft-shell hold bright future for high-performance lubrication application.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"33 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584337","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

Structural superlubricity at homogenous interface of penta-graphene 五石墨烯均质界面的结构超润滑性

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-11 DOI: 10.1007/s40544-023-0852-5

Xinqi Zhang, Jiayi Fan, Zichun Cui, Tengfei Cao, Junqin Shi, Feng Zhou, Weimin Liu, Xiaoli Fan

{"title":"Structural superlubricity at homogenous interface of penta-graphene","authors":"Xinqi Zhang, Jiayi Fan, Zichun Cui, Tengfei Cao, Junqin Shi, Feng Zhou, Weimin Liu, Xiaoli Fan","doi":"10.1007/s40544-023-0852-5","DOIUrl":"https://doi.org/10.1007/s40544-023-0852-5","url":null,"abstract":"Two-dimensional (2D) van der Waals layered materials have been widely used as lubricant. Penta-graphene (PG), a 2D carbon allotrope exclusively composed of irregular carbon pentagons has recently been predicted to have superlubricating property. In the present study, by combining the molecular dynamics simulation and first-principles calculations, we investigated the frictional property of PG in both commensurate and incommensurate contacts. Our calculations show the ultra-low friction at the interface of relatively rotated bilayer PG with twist angles of more than 10° away from the commensurate configuration. Meanwhile, our calculations demonstrate the isotropy of the ultra-low friction at the interface of incommensurate contact, in contrast to the anisotropic of the commensurate contacting interface. Additionally, the evolution of friction force and the fluctuation of potential energy along sliding path correlate closely with the interface’s structure. The energetics and charge density explain the difference between the friction at the interfaces of the commensurate and incommensurate contacts. Not only that, we found the correlation between the intrinsic structural feature and interlayer binding energy. Importantly, our findings on the retainment of the ultra-low friction under work conditions indicates that the superlubricating state of PG has good practical adaptability.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"151 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584349","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

Enhancement of mechanical and tribological performance of Ti–6Al–4V alloy by laser surface alloying with Inconel 625 and SiC precursor materials 通过激光表面合金化铬镍铁合金 625 和碳化硅前驱体材料提高 Ti-6Al-4V 合金的机械和摩擦学性能

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-11 DOI: 10.1007/s40544-024-0878-3

Hao-Ran Cheng, Ki-Hoon Shin, Hong Seok Kim

{"title":"Enhancement of mechanical and tribological performance of Ti–6Al–4V alloy by laser surface alloying with Inconel 625 and SiC precursor materials","authors":"Hao-Ran Cheng, Ki-Hoon Shin, Hong Seok Kim","doi":"10.1007/s40544-024-0878-3","DOIUrl":"https://doi.org/10.1007/s40544-024-0878-3","url":null,"abstract":"This study focused on producing metal matrix composite (MMC) coatings on Ti–6Al–4V alloy through laser surface alloying using a novel combination of Inconel 625 and SiC precursor materials. Various ratios of alloying powders were examined to evaluate surface properties such as microhardness, wear resistance, and friction coefficient, along with analyzing the phase composition and microstructure of the coatings. The in situ synthesized MMC coatings exhibited the presence of α-Ti, NiTi, NiTi2, and TiC phases. Additionally, Ti5Si3 and α-Ti/Ti5Si3 eutectic structures were observed when the SiC content exceeded 20%. In comparison to the titanium substrate, the MMC coating significantly enhanced microhardness by over threefold and reduced wear by 95%. However, it was crucial to carefully select the appropriate combination of alloying powders to avoid a substantial decrease in friction performance and excessive formation of cracks. Through a comparative analysis of experimental results, the optimal precursor material composition was identified as 85% Inconel 625 and 15% SiC. This study demonstrated the effective utilization of Inconel 625 and SiC alloying materials to enhance the surface properties of titanium alloys, thereby expanding their application in challenging environments.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":"64 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584350","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

Towards direct superlubricity and superlow wear via amino modification of polyhydroxy alcohol solutions 通过对聚羟基乙醇溶液进行氨基改性，实现直接超润滑和超低磨损

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-11 DOI: 10.1007/s40544-023-0848-1

Qiang Ma, Chengpeng Yan, Rui Yan, Xin Xu, Haifeng Wang

{"title":"Towards direct superlubricity and superlow wear via amino modification of polyhydroxy alcohol solutions","authors":"Qiang Ma, Chengpeng Yan, Rui Yan, Xin Xu, Haifeng Wang","doi":"10.1007/s40544-023-0848-1","DOIUrl":"https://doi.org/10.1007/s40544-023-0848-1","url":null,"abstract":"Friction remains as the primary mode of energy dissipation and components wear, and achieving superlubricity shows high promise in energy conservation and lifetime wear protection. The results in this work demonstrate that direct superlubricity combined with superlow wear can be realized for steel/Si3N4 contacts on engineering scale when polyhydroxy alcohol solution was selectively modified by amino group. Macroscopic direct superlubricity occurs because 3-amino-1,2-propanediol molecules at the friction interface could be induced to rotate and adsorb vertically on the friction surface, forming in-situ thick and dense molecular films to passivate the asperity contacts. Furthermore, amino modification is also conducive to improving the lubrication state from boundary to mixed lubrication regime by strengthening the intermolecular hydrogen bonding interaction, presenting enhanced load-bearing capability and reduced direct solid asperity contacts. Thus, direct superlow average friction of 0.01 combined with superlow wear are achieved simultaneously. The design principle of direct superlubricity and superlow wear in this work indeed offers an effective strategy to fundamentally improve energy efficiency and provide lifetime wear protection for moving mechanical assemblies.\u0000","PeriodicalId":12442,"journal":{"name":"Friction","volume":"20 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584351","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

Progress on mechanical and tribological characterization of 2D materials by AFM force spectroscopy 利用原子力显微镜力谱对二维材料进行机械和摩擦学表征的研究进展

IF 6.8 1区工程技术

Friction Pub Date : 2024-07-10 DOI: 10.1007/s40544-024-0864-9

Shuai Wu, Jie Gu, Ruiteng Li, Yuening Tang, Lingxiao Gao, Cuihua An, Qibo Deng, Libin Zhao, Ning Hu

{"title":"Progress on mechanical and tribological characterization of 2D materials by AFM force spectroscopy","authors":"Shuai Wu, Jie Gu, Ruiteng Li, Yuening Tang, Lingxiao Gao, Cuihua An, Qibo Deng, Libin Zhao, Ning Hu","doi":"10.1007/s40544-024-0864-9","DOIUrl":"https://doi.org/10.1007/s40544-024-0864-9","url":null,"abstract":"Two-dimensional (2D) materials are potential candidates for electronic devices due to their unique structures and exceptional physical properties, making them a focal point in nanotechnology research. Accurate assessment of the mechanical and tribological properties of 2D materials is imperative to fully exploit their potential across diverse applications. However, their nanoscale thickness and planar nature pose significant challenges in testing and characterizing their mechanical properties. Among the in situ characterization techniques, atomic force microscopy (AFM) has gained widespread applications in exploring the mechanical behaviour of nanomaterials, because of the easy measurement capability of nano force and displacement from the AFM tips. Specifically, AFM-based force spectroscopy is a common approach for studying the mechanical and tribological properties of 2D materials. This review comprehensively details the methods based on normal force spectroscopy, which are utilized to test and characterize the elastic and fracture properties, adhesion, and fatigue of 2D materials. Additionally, the methods using lateral force spectroscopy can characterize the interfacial properties of 2D materials, including surface friction of 2D materials, shear behaviour of interlayers as well as nanoflake-substrate interfaces. The influence of various factors, such as testing methods, external environments, and the properties of test samples, on the measured mechanical properties is also addressed. In the end, the current challenges and issues in AFM-based measurements of mechanical and tribological properties of 2D materials are discussed, which identifies the trend in the combination of multiple methods concerning the future development of the in situ testing techniques.","PeriodicalId":12442,"journal":{"name":"Friction","volume":"74 1","pages":""},"PeriodicalIF":6.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566309","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

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