Article
Materials Science, Multidisciplinary
Zheng-yang Li, Zhen-bing Cai, Teng Zhou, Xue-jun Cui, Min-hao Zhu
Summary: This study investigates the impact response, energy absorption, and damage characteristics of a new bionic composite coating (BCC) in low-speed impact conditions. The results show that the BCC has lower peak force and higher energy absorption, indicating its effectiveness in resisting impact and reducing damage.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Engineering, Mechanical
Yanping Ren, Pengfei Wang, Zhenbing Cai, Jifan He, Jinsheng Lu, Jinfang Peng, Xiaojun Xu, Minhao Zhu
Summary: This study investigates the impact wear behavior of a deep plasma nitrided layer and its substrate. The results show that the nitrided layer exhibits lower energy absorption ratio and better impact resistance than the untreated specimens, with different wear mechanisms.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Metallurgy & Metallurgical Engineering
Jun-xiu Chen, Yang Yang, Iniobong P. Etim, Li -li Tan, Ke Yang, R. D. K. Misra, Jian-hua Wang, Xu-ping Su
Summary: The addition of nano-Y2O3 to micro-arc oxidation coating on magnesium alloys improves the wear resistance and degradation resistance. The nano-Y2O3 particles stabilize the coating and seal the micro-pores, resulting in improved coating properties. The degradation rate and volume loss of the coating are significantly reduced.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Materials Science, Coatings & Films
Wei Li, Jie Gao, Yong Ma, Ke Zheng, Jiaqi Zhi, Yongbin Xin, Shihong Xie, Shengwang Yu
Summary: Undoped and diamond-doped micro-arc oxidation (MAO) coatings were prepared on Ti6Al4V to improve wear resistance and biocompatibility. The microstructure, wear resistance, corrosion resistance, and cytocompatibility of the coatings were studied and compared. The results showed that diamond-doped MAO coatings had higher wear resistance and similar corrosion resistance compared to undoped coatings and the original substrate. Both types of MAO coatings enhanced the adhesion, spreading, proliferation, and osteogenic differentiation of MC3T3-E1 osteoblasts compared to the original Ti6Al4V substrate.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Junbo Zhou, Lin Zhang, Yuan Ding, Xudong Chen, Zhenbing Cai
Summary: The MoS2/C nanocomposite coatings were deposited on a 304 stainless steel plate by unbalanced magnetron sputtering, with varying carbon contents. The coatings exhibited good impact wear resistance and lower wear depth compared to the substrate, with different dynamic response processes as carbon content increased.
Article
Engineering, Mechanical
Dakshitha Weerasinghe, M. R. Bambach, Damith Mohotti, Hongxu Wang, Paul J. Hazell
Summary: This study investigated the impact response of aramid Twaron CT709 fabrics coated with a rubber spray-on material, and found that the rubber coating can increase the ballistic limit velocity and energy absorption, but at certain impact velocities, the energy absorption is lower.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Materials Science, Coatings & Films
Zongan Luo, Huan Yu, Jinsong Yang, Yingying Feng, Guangming Xie, R. D. K. Misra
Summary: The study focused on the effects of quenching and quenching-tempering processes on the microstructure, hardness, impact toughness, and wear resistance of Fe-based/B4C composite coating on ASTM 1045 steel. The results showed that metallurgical bonding was achieved between the coating and the steel substrate. Quenching and quenching-tempering treatments resulted in changes in the morphology of hard phases and the coating matrix, improving impact toughness and wear resistance. The coordination between the coating matrix and hard phases played a significant role in determining the wear resistance of the coating, with the best wear resistance obtained at QT540 condition.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Shang-Kun Wu, Wei Yang, Wei Gao, Yu-Hong Yao, Yong Zhang, Jian Chen
Summary: The study investigated the fabrication and performance of MAO + Cu composite coatings on 6061 aluminum alloy substrates. The results showed that the composite coatings exhibited good adhesion strength and friction properties.
Article
Engineering, Mechanical
Mahathep Sukpat, Jirapong Kasivitamnuay, Karuna Tuchinda
Summary: This study investigated the impact wear of alloy steel using computational techniques combined with empirical data. The aim was to develop a low-moderate effort approach using limited resources to predict the average impact wear rate of AISI 4140 alloy steel. The wear mechanisms were explored and the prediction results were validated with empirical data.
Article
Materials Science, Coatings & Films
Zhoukun Shi, Liping Xu, Chunming Deng, Min Liu, Hanlin Liao, Geoffrey Darut, Marie-Pierre Planche
Summary: This study investigated the preparation of aluminum bronze coatings on aluminum alloy substrates using the HVOF system to enhance the wear resistance and tribological behavior. Fretting wear tests were conducted at different frequencies, and the worn surface was characterized by SEM and XPS. The results showed that the coefficient of friction increased and then decreased as the frequency increased. The wear mechanism changed from abrasive wear to adhesive wear, and oxidation occurred on the worn tracks, forming oxide films mainly composed of CuO and Cu2O. The aluminum bronze coating exhibited excellent resistance performance even at high frequencies.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Jing Wang, Guangshen Xu, Endong Jia, Ziyue Zhao, Zezhen Wang, Hailin Lu
Summary: Micro arc oxidation (MAO) is a surface treatment technology that utilizes electrolyte to generate ceramic coatings for improved surface characteristics. This paper proposes a novel MAO method that uses a robotic arm to control the movement of the cathode, enabling effective surface treatment on large workpieces and targeted regions.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Huaqiang Zhu, Kailin Long, Fengkun Liu, Xiangdong Su
Summary: Novel Fe2O3/flake & alpha;-Al2O3 pearlescent pigments with a high coating ratio and regular hexagonal shape were successfully prepared by liquid phase deposition for the first time. The effects of pH, FeCl3 dose, sintering temperature, and holding time on the coating ratio of Fe2O3 were systematically studied through the design of an orthogonal test. The results of this research provide an effective way to optimize the coating ratio and process.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Xin Wang, Zengshen Yue, Xiang Xu, Zhongnan Zhao, Haibo Ji, Manyao Zhu, Pengfei Wang, Qiancheng Zhang, Tian Jian Lu
Summary: The ballistic impact resistance of metallic corrugated sandwich panels retrofit-ted with elastomeric coating (polyurea) is investigated. Experimental measurements and numerical simulations are combined to analyze the ballistic impact response, energy absorption mechanisms, and the influence of coating position/thickness and projectile rigidity. The presence of a thick impact-side elastomeric coating helps to enhance the penetration resistance. Polyurea coating is more effective against rigid, flat-ended projectiles. Retrofitting an all-metallic sandwich panel with elastomeric coating broadens its multifunctionality at a minimal increase in cost and mass.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
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
Chemistry, Physical
Yutao Yan, Lifeng Lu, Yuqiu Huo
Summary: Electrodeposition was used to prepare nickel graphene oxide (Ni-GO), nickel silicon carbide (Ni-SiC), and nickel graphene oxide/silicon carbide (Ni-GO/SiC) composite coatings on a 2218 aluminum alloy substrate. The composite coatings exhibited dense and defect-free microstructures, strong bonding with the substrate, and significantly increased microhardness. The friction coefficient and wear rate of the composite coatings were lower compared to the substrate. Among the composite coatings, the Ni-GO/SiC composite coating showed the best overall tribological performance.
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.