Article
Materials Science, Multidisciplinary
Manish Kumar, Rajnesh Tyagi
Summary: This study investigates the effect of density, shape of dimples, and sliding speed on the tribological performance of laser textured bearing steel under single drop lubrication. The results suggest that a lower density of bi-triangular dimples performed better in terms of reduced coefficient of friction and wear rate as compared to circular dimples or bi-triangular dimples with 20% density.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Engineering, Mechanical
Jian Ma, Peng Yi, Hongyu Jia, Yongliang Jiang, Jiawei Sun, Xianghua Zhan, Yancong Liu
Summary: This study combines friction experiments and finite element analysis to investigate the tribological properties and oil retention mechanism of sinusoidal textured surfaces. The results show that the sinusoidal texture can improve tribological performance, with ST-3 (width-to-depth ratio of 1.35) exhibiting optimal oil retention properties and significantly reducing wear and friction coefficient.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Multidisciplinary Sciences
Risheng Long, Chao Zhao, Yimin Zhang, Yibing Wang, Yueyong Wang
Summary: The study reveals the significant influence of the symmetry of vein-bionic textures and the number of secondary veins on the friction and wear properties of vein-bionic textured CRTBs under starved lubrication. Compared to the smooth group, the COFs and mass losses of vein-bionic textured bearings are all reduced. Among all groups, the tribological performance of bearings inspired by Ash is the best, with a wear loss reduced by 16.23% and a COF reduced by 15.79%.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Mechanical
Youqiang Xing, Mingyu Zhu, Ze Wu, Zhao Li, Shuowei Bai, Kedong Zhang, Lei Liu
Summary: Bionic shark-skin textures and DLC coatings were applied on Si3N4/TiC ceramic and their high-temperature tribological properties were evaluated using a ball-on-disk tribometer. Results showed that the TC sample had the lowest friction coefficient at temperatures below 300 degrees C. As the temperature increased to 500 degrees C, the friction coefficient of all samples initially decreased and then increased, with the smooth sample (SS) having a lower friction coefficient compared to the other samples (TS and TC) during the relatively steady stage. The mechanism was also discussed.
TRIBOLOGY INTERNATIONAL
(2023)
Review
Chemistry, Physical
Pawel Pawlus, Rafal Reizer, Wieslaw Zelasko
Summary: Two-process random textures have better functional properties than one-process surfaces, but there is limited knowledge about their measurement, modeling, and behavior. These surfaces are highly sensitive to measurement errors and difficult to model. This paper presents the measurement, characterization, and modeling of two-process textures, analyzing their impact on contact mechanics, friction, and wear.
Article
Engineering, Mechanical
Xiang Lin, Jinbang Li, Shuli Xie, Renliang Xia, Jinyang Liu, Limin Luo
Summary: In this study, micro-grooves were fabricated on 40CrNiMoA steel discs by laser texturing to improve its tribological properties and prolong its service life. The results show that the groove texture effectively enhances the tribological performance of the steel. However, increasing the groove width may lead to higher contact stress, resulting in increased friction and wear.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2022)
Article
Engineering, Mechanical
Yuhang Wu, Conglin Dong, Chengqing Yuan, Xiuqin Bai, Liyuan Zhang, Ye Tian
Summary: The study investigated a novel composite material composed of HDPE and MWCNTs and its impact on frictional properties under water-lubricated conditions. The results showed that MWCNTs significantly enhanced the mechanical properties of HDPE, reducing friction coefficients and wear volumes, with the modification of 7.5 wt% MWCNTs showing the best performance.
Article
Engineering, Mechanical
Xudong Zhao, Yimin Zhang
Summary: This study evaluates the ability of textured rolling bearings to capture and store contaminants in a lubricant-contaminated state. The results show that adding texture to the shaft washer raceway improves friction reduction and dynamic performance, as well as suppressing vibration energy in the medium and high frequency bands. The effectiveness of capturing contaminants is influenced by the diameter and area density of the pits.
Article
Materials Science, Multidisciplinary
Jack Harrison, Hariom Jani, Paolo G. Radaelli
Summary: This study explores topological structures in A-type antiferromagnets, focusing on the candidate material α-Fe2O3 for antiferromagnetic spintronics. By utilizing interfacial Dzyaloshinskii-Moriya interaction, the researchers stabilize a variety of topological textures, including previously undiscovered AFM skyrmions, and provide a scaling model for texture sizes based on simple dimensional analysis.
Article
Engineering, Chemical
Bo Xu, Bifeng Yin, Hekun Jia, Xijun Hua, Mingliang Wei
Summary: Based on the characteristics of engine working conditions, the effects of three different cylinder liner surface topographies on the tribological performance of production piston ring pack were researched. The results showed that the liner textures have different effects on different types of piston rings, improving efficiency and stability, and providing resistance to surface wear caused by abrasion.
LUBRICATION SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Pavankumar Gurav, A. Bharatish, G. R. Rajkumar, H. N. Narasimha Murthy, Subbaraya Mohankumar
Summary: This study investigates the effect of laser elliptical surface textures on the friction and wear performance of nickel aluminum bronze (NAB). The results show that the appropriate texture density, load, and sliding velocity can significantly reduce the coefficient of friction and specific wear rate of NAB.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Engineering, Mechanical
Reza Gheisari, Mariela Vazquez, Vasilis Tsigkis, Ali Erdemir, Karen L. Wooley, Andreas A. Polycarpou
Summary: In order to solve the wear problem in polymer dry sliding applications, we introduced a novel additive, microencapsulated phase change material (MPCM), into an advanced polymeric coating. The research found that the MPCM-filled composite exhibited unique tribological behavior, manifested as zero wear and a super-low coefficient of friction (COF) of 0.05. Under the experimental conditions examined, the developed composite outperformed the state-of-the-art polytetrafluoroethylene (PTFE)-filled coatings.
Article
Chemistry, Multidisciplinary
Tao Bai, Zhou Liu, Zeguang Pei, Wenqi Fang, Yuan Ma
Summary: In this study, a chemical graft method was used to connect modified graphene oxide and Fe3O4, producing GO@Fe3O4/WPU composite coating with excellent tribological properties. The aligned composite coating prepared in a magnetic field showed the lowest friction coefficient and wear rate, forming a uniform and continuous transfer film on the friction counterpair to avoid direct friction between the counterpair and the coating.
Article
Engineering, Mechanical
Anna Buling, Joerg Zerrer
Summary: Facing the demands of various industries, lightweight and tailored surface technology such as plasma-electrolytical oxidation (PEO) provides a promising solution to reduce wear and frictional energy losses. However, PEO is still limited in industrial applications due to high cost and applicability only on small parts. The CERANOD (R) PEO surfaces have been on the market for over 20 years, offering high corrosion and wear protection for lightweight metals under harsh conditions. By combining PEO surfaces with polymers like doped PEEK, low friction and wear can be achieved without additional lubricants. This study presents laboratory tribological and wear test results, as well as SEM and EDS findings for different CERANOD (R) surface solutions, supporting their application in saving energy and resources for clients in various industries.
Article
Engineering, Mechanical
Ming LUO, Siyu HUANG, Ziyan MAN, Julie M. CAIRNEY, Li CHANG
Summary: In this study, short carbon fiber-reinforced nylon composites were printed using FDM, and their friction and wear behavior were systematically investigated under different sliding conditions. The results showed that the addition of short fibers improved the friction and wear performance of the printed materials. Under water-lubricated conditions, the printed composites exhibited a low and stable friction coefficient. However, the wear rate of the printed specimens could be higher under low loads. Furthermore, surface textures were found to enhance the wear resistance of the printed materials under dry sliding conditions.
