Article
Materials Science, Multidisciplinary
Hongyi Song, Shuhai Zhao, Peiyan Chen, Yongjin Mai
Summary: In this study, copper ions were incorporated into GO nanosheet coatings to enhance their performance as solid lubricants. The modified coatings showed improved durability and low friction coefficient, making them suitable for various mechanical engineering applications.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Engineering, Mechanical
Viktor Molnar
Summary: This study analyzed the tribology-related 3D topography parameters of hard-machined surfaces. Response function, correlation, and relative deviation analyses were conducted to create tribology maps for the selection of optimal cutting parameter values.
Article
Chemistry, Physical
Yu Yang, Mingrui Yu, Frederik Boeke, Qin Qin, Rene Huebner, Steffen Knust, Sabrina Schwiderek, Guido Grundmeier, Horst Fischer, Adrian Keller
Summary: The study demonstrates that nanoscale surface features have a significant impact on protein adsorption, showing high protein- and material-specificity. Different proteins of varying sizes and charges exhibit distinct behaviors in adsorption on different surfaces.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Philipp G. Grutzmacher, Sebastian Suarez, Aura Tolosa, Carsten Gachot, Guichen Song, Bo Wang, Volker Presser, Frank Muecklich, Babak Anasori, Andreas Rosenkranz
Summary: MXenes exhibit superior lubrication performance, outperforming other 2D nanomaterials by increasing their wear life by 200% and showing an extremely low wear rate under high pressure.
Article
Engineering, Mechanical
Marta Bogdan-Chudy, Piotr Nieslony, Munish Kumar Gupta, Szymon Wojciechowski, Radoslaw W. Maruda, Jozef Gawlik, Grzegorz M. Krolczyk
Summary: The study focused on the tribological, thermal, and wear behavior of Ti6Al4V alloy against a carbide pin, with minimal effect of sliding distance on friction coefficient value and significant influence of sliding distance on wear surface generation. The results confirmed a satisfactory range of friction coefficient values and highlighted the importance of examining wear surface micrographs in understanding wear behavior.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Chemistry, Physical
Kamil Czapla, Krzysztof Zaba, Marcin Kot, Ilona Nejman, Marcin Madej, Tomasz Trzepiecinski
Summary: This study aims to investigate the impact of annealing and varnishing variants on the strength and structural properties of packaging closure materials. Through friction testing and analysis of different materials, differences in coating adhesion and favorable friction conditions of certain coatings were discovered.
Article
Engineering, Mechanical
E. Laolu-Balogun, S. Owen, T. Booth, G. Pattinson, P. H. Shipway, K. T. Voisey
Summary: This study reveals that the Cu-Ni-In under-layer coating significantly improves the fretting performance of the polymer-bonded MoS2-based dry film lubricant. By increasing the surface roughness of the Cu-Ni-In layer, the lifetime of the lubricant more than doubled compared to the Ti-6Al-4 V substrate with similar surface topographies.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Jiaxing Wu, Jianxin Deng, Mingyuan Wang, Zhihui Zhang, Ran Wang, Yang Lu, Yichen Bao, Runzhou Tian
Summary: Ultrasonic surface rolling processing (USRP) is used to create textures on GCr15 substrates, and a PTFE-PPS/SiO2 coating is applied to enhance the friction and wear properties. The synergistic effect between the USRP textures and the coating is investigated, with the results showing that the linear texture with two processing times and the PTFE-PPS/SiO2 coating achieve the best performance. The shape and processing times of the textures, as well as the adhesion with the coating, are found to be important factors affecting the synergistic improvement.
ADVANCED ENGINEERING MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yanfei Liu, Shengtao Yu, Qiuyu Shi, Xiangyu Ge, Wenzhong Wang
Summary: Friction and wear can cause energy loss and machine failure, but researchers have found that using multilayer coatings can improve performance and durability through advanced lubrication technologies. This paper reviews the design concept and properties of different types of multilayer coatings, and discusses the functional mechanisms of multilayer structures in detail.
Article
Engineering, Mechanical
Di Wang, Song-sheng Lin, Jin-de Lu, Shu-qi Huang, Zhi-fu Yin, Hong-zhi Yang, Pei-ying Bian, Yun-liang Zhang, Ming-jiang Dai, Ke-song Zhou
Summary: In this study, a 16 μm CrN/CrAlN multilayer coating is prepared on the titanium alloy surface via arc ion plating, and the high-temperature wear performance and mechanism after coating are investigated. The results indicate that the friction coefficient of the coating decreases with increasing temperature, and the wear rate increases as the temperature rises.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Biochemistry & Molecular Biology
Romain Bagnol, Claudia Siverino, Vincent Barnier, Liam O'Mahony, Dirk W. Grijpma, David Eglin, T. Fintan Moriarty
Summary: In this study, a negatively charged exopolysaccharide from Bifidobacterium longum (EPS624) was used in multilayered polyelectrolyte coatings with positively charged chitosan, and its immunoregulatory and cytocompatible properties were investigated. The results showed that the polyelectrolyte coatings exhibited excellent cytocompatibility and stable immunoregulatory effects, making them suitable for biomedical engineering applications.
Article
Engineering, Chemical
Zhengchao Xi, Jianbo Sun, Lei Chen, Haixia Cui, Yanjun Ma, Huidi Zhou, Jianmin Chen
Summary: Natural serpentine powders were incorporated into phosphate-bonded solid coatings to enhance anti-wear performance. Through experiments, it was found that the optimal incorporation of natural serpentine in phosphate coatings was 10 wt.%, resulting in significantly elevated anti-wear performance. Furthermore, under harsher friction conditions, the strengthening effect of natural serpentine on the tribological performance of phosphate composite coatings was further stimulated.
Article
Engineering, Mechanical
Panahsadat Fasihi, Olivia Kendall, Ralph Abrahams, Peter Mutton, Quan Lai, Cong Qiu, Wenyi Yan
Summary: The study found that graphite-based solid lubricants are effective at reducing friction coefficients, enhancing wear resistance, and extending component lifespan under high creep conditions. Meanwhile, MoS2-based lubricants did not effectively reduce friction coefficients at high creepages and resulted in significant wear.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xiaolong Lu, Cunxiu Zhang, Xiao Zhang, Xinjian Cao, Jian Kang, Xudong Sui, Junying Hao, Weimin Liu
Summary: By controlling the substrate bias, (CrAlTiNbV)Nx coatings can exhibit different crystal structures and properties. Optimum conditions for achieving the lowest friction coefficient and wear rate in aviation lubricant were found to be at substrate biases of -96 V and -126 V, respectively.
CERAMICS INTERNATIONAL
(2021)
Article
Biochemistry & Molecular Biology
Lauren M. Ward, Barbara G. Fickling, Steven T. Weinman
Summary: A line-and-groove nanopattern applied to a nanofiltration membrane did not reduce concentration polarization as expected but instead increased it. Further studies on different pattern shapes and sizes are needed to understand the influence of pattern size and shape on concentration polarization.
Article
Engineering, Mechanical
Yankui Song, Ke Xiao, Guo Xiang
Summary: The novelty of this study lies in constructing an Entropy-based wear and fluid-solid-thermal (FST) coupled model for journal bearings, and revealing the transient interaction behavior between wear evolution and FST evolution during repeated starting and stopping. The wear rate is measured experimentally, and the contact temperature, friction coefficient and normal contact force are obtained from the validated FST model. Wear tests and numerical calculations are conducted to validate the predicted wear rate and investigate the time-varying wear and FST evolution of journal bearings.
Article
Engineering, Mechanical
Xin-long Liu, Xin Guan, Yuan Zhong, Qian Xiao, Yong Cao, Wu-lue Zhang, Song Zhang, Yi-ting Zheng, Ming-sheng Gao, Dao-yun Chen, Wen-bin Yang
Summary: Gaps in the conductor rail joints of intercity trains have an impact on current transmission and the wear of carbon skateboards. These gaps decrease the coefficient of friction, increase electrical contact resistance, and affect the wear rate of carbon skateboards.
Article
Engineering, Mechanical
Yuhang Wu, Conglin Dong, Xiuqin Bai, Chengqing Yuan
Summary: The study developed a new composite material by incorporating hexagonal boron nitride (h-BN) particles into a thermoplastic polyurethane (TPU) matrix, which exhibited excellent self-lubricating properties and reduced frictional excitation forces. The addition of h-BN particles effectively reduced the coefficient of friction, decreased fluctuation amplitude, enhanced wear resistance, and attenuated vibration behaviors.
Article
Engineering, Mechanical
Tiancheng Ouyang, Xiuyang Sun, Wentao Tang, Yinxuan Li, Zhi Qun Tian, Yanzhou Li
Summary: By adding nitrogen-doped graphene and C60 nanoparticles to the lubricant, a highly efficient nano-lubricant with vibration and noise reduction properties is synthesized.
Article
Engineering, Mechanical
Xin Zhuo, Jun Cao, Haibo Huang, Li Liu, Xinkun Suo, Peiqing Ye, Zeshan Abbas
Summary: A polymer coating prepared by liquid spraying technology on the surface of 20CrMo steel demonstrates good tribological and anti-cavitation erosive properties. It can effectively replace CuPb24Sn copper alloy in valve plates for pumps under different lubrication conditions. The coating exhibits adhesive wear and reduces frictional loss, and mainly shows abrasive wear under complex working conditions. Its lipophilicity, high hardness to elastic modulus ratio, and corrosion resistance are the main influencing factors for its performance.
Article
Engineering, Mechanical
Md. Aminul Islam, Jiaren (Jimmy) Jiang, Yongsong Xie
Summary: Erosion-corrosion is a major factor in material loss and reduced useful life of hydro-transport equipment. This study evaluates the erosion-corrosion characteristics of different materials and finds that matrix wear affects the degradation of carbides. Sufficient wear and corrosion resistance in the surrounding matrix are important for good erosion-corrosion resistance.
Article
Engineering, Mechanical
Andre Dubois, Oussama Filali, Laurent Dubar
Summary: This study investigates the effect of surface roughness, contact pressure, and lubrication on the onset of galling in aluminum 6082-T6 using a pin-on-plate tribometer. The experimental results show that the roughness and lubricants play a significant role in preventing galling.
Article
Engineering, Mechanical
Jizhan Wu, Peitang Wei, Guoqiang Liu, Difa Chen, Xiuhua Zhang, Taimin Chen, Huaiju Liu
Summary: This study conducted a comprehensive evaluation of the DLC coating treatment on the loading capacity of gears and characterized the surface features and fatigue performance. The results demonstrate that DLC coating significantly improves the hardness and surface residual compressive stress of the gears, as well as enhances their contact fatigue performance.
Article
Engineering, Mechanical
Yangping Liu, Hwaran Lee, Annsley Mace, Jeremy L. Gilbert
Summary: An AFM-based single asperity tribology method was used to investigate the wear performance of carbides and base metal matrix in high carbon CoCrMo alloy. The wear behavior of the two types of carbides was stress-dependent and influenced by chemical composition. Cr-rich carbides exhibited higher wear resistance compared to Mo-rich carbides.
Article
Engineering, Mechanical
Zdenek Riha, Michal Zelenak, Akash Nag, Jakub Poloprudsky, Tomas Kruml, Sergej Hloch
Summary: This study investigates the erosion performances of a high-speed modulated jet (MWJ) and continuous water jet (CWJ). By comparing different nozzles and water jet powers, the effects of modulated and continuous jets on aluminum alloy were studied. The results show that under certain conditions, modulated jet can create deeper and sharper grooves while reducing the impact of lateral flow.
Article
Engineering, Mechanical
Chunyu Yu, Weipu Li, Yang Guo, Xianbin Sun, Fanli Hong, Ning Sun, Qinghai Zhang
Summary: This study explores the relationship between the wear rate of train brake pads and its features, and proposes a method for predicting the wear rate suitable for small sample data. Grey relational analysis and Pearson correlation analysis are used to determine the preferred features that affect the wear rate, and a BOA-BP model is established for prediction. The results show that BOA-BP exhibits better advantages in prediction with small samples.
Article
Engineering, Mechanical
Shan Yin, Xin Zhao, Shuangchao Huang, Zefeng Wen, Xuesong Jin
Summary: This study simulated the rolling contact of a driving wheelset over tangent and curved tracks at a speed up to 500 km/h using an explicit finite element approach to derive creep curves. The comparison between quasi-steady curves and transient curves in the presence of rail corrugation helped to identify cases where traditional theories are inapplicable and where transient effects must be considered. Additionally, the study further analyzed the influence of middle/high-frequency vibrations in the presence of rail corrugation.
Article
Engineering, Mechanical
Jiyao Zhang, Yuanlie Yu, Junlei Tang, Yingying Wang, Honggang Sun, Kaikai Song, Jianhong Gong, Pingping Liu, Xiaoming Liu, Lina Hu, Parthiban Ramasamy, Juergen Eckert
Summary: The influence of high-carbon addition on the microstructure, hardness, and wear behavior of CoCrNi alloy was investigated. It was found that the addition of carbon resulted in the formation of carbide particles, enhancing the hardness and improving the wear resistance. Fracture and detachment of hard carbides during friction introduced additional abrasive particles, transitioning the wear mechanism from adhesive-dominated to abrasive-dominated.
Article
Engineering, Mechanical
Yanfei Liu, Shengtao Yu, Ruize Zhang, Xiangyu Ge, Wenzhong Wang
Summary: This study reports the tribological behavior of nanodiamond plate (NDPL) as a nanoadditive for the first time and compares it with nanodiamond particles (NDPA). The results show that NDPL provides better lubrication performance at higher concentrations, and the sliding between NDPLs and the structural transformation from sp3 to sp2 carbon play a crucial role in lubrication and wear resistance.