Article
Materials Science, Ceramics
Lupeng Wu, Le Gu, Ranran Jian
Summary: The study showed that adding graphene during lubrication of Si3N4 ceramic/GCr15 steel components can reduce friction and improve wear resistance. Graphene can act as a protective agent through lubrication mechanism, reducing wear on the rubbing surfaces.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Xiyao Liu, Hao Dong, Zhiwei Lu, Jun'an Zhang, Bo Liu
Summary: In this study, the friction structure of surface microcavities filled with MoS2/NiTi was prepared to improve the tribological properties of bearing steel. MoS2 provides lubrication under lower loads, while NiTi reduces friction by exerting a rolling effect. The synergistic effect of MoS2 and NiTi results in excellent tribological properties of bearing steel in a wide load range.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Zhentao Qi, Hao Liu, Jianzhang Wang, Fengyuan Yan
Summary: This study investigated the tribological properties of PBT nanocomposites enhanced with surface-treated SiO2 aerogel nanoparticles. The results showed that the nanoparticles improved wear-resistance by enhancing transfer behavior, but seawater pressure hindered their transfer due to degradation of adhesion between interfaces.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Hao Liu, Jianzhang Wang, Fengyuan Yan
Summary: In the deep sea environment, the incorporation of PMSQ enhances PBT transfer by forming an initial transfer layer that grows into an optical visible transfer film. However, seawater pressure prolongs the transfer process and decreases adhesion of the transfer film by saturating hydroxyl groups at PMSQ surface and metallic counterface dangling bonds.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
S. Ponomareva, F. Ayela
Summary: The production of graphene nanoplatelets (GNP) through liquid phase exfoliation in an aqueous solution has resulted in the development of a high-performing graphene-based nanofluid, known as graphenofluid, with excellent anticorrosion and lubricating properties. This improvement is attributed to a new exfoliation process using hydrodynamic cavitating 'lab on a chip'. The addition of sodium cholate as a surfactant is responsible for the anticorrosion properties, while the presence of few layer GNP enhances the lubricating properties, especially on rough surfaces.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Polymer Science
Yuxuan Zhou, Bingli Pan, Mengdan Wang, Yuanyuan Feng, Peipei Nie, Xuejian He
Summary: Two zinc-based metal-organic frameworks (Zn-MOFs) with different morphologies were successfully synthesized using a surfactant-mediated method. The addition of a polydopamine (PDA) adhesion layer on the Polytetrafluoroethylene (PTFE) improved bonding strength and allowed for the growth of Zn-MOFs on the PTFE surface. The incorporation of Zn-MOFs reduced the friction coefficient and wear rate of the composites, with ZnMOF2 showing superior performance due to its thin layer structure.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Mechanical
Raimondas Kreivaitis, Milda Gumbyte, Arturas Kupcinskas, Jolanta Treinyte, Albinas Andriusis
Summary: Due to their cost-effectiveness and environmental friendliness, water-based lubricants have advantages over oil-based ones. This study investigates the friction and wear reduction ability of bis(2-hydroxyethyl) ammonium oleate protic ionic liquid (PIL) in a glycerol aqueous lubricating fluid. The results show that the investigated PIL can significantly reduce friction and wear. The most suitable concentration of PIL is 0.5%, where friction and wear are reduced 2.6 and 15.8 times, respectively. Further research could focus on higher load and speed applications.
Review
Polymer Science
Xiaoyan Liu, Per M. Claesson
Summary: This review summarizes recent experimental investigations of interfacial lubrication properties of surfaces coated with bottlebrush bio-lubricants and bioinspired bottlebrush polymers. It also discusses recent advances in understanding intermolecular synergy in aqueous lubrication.
Article
Engineering, Mechanical
Xin Hou, Pengpeng Bai, Jingyang Li, Yuanzhe Li, Hui Cao, Xiangli Wen, Yonggang Meng, Liran Ma, Yu Tian
Summary: In this study, PEEK/MoS2 composites were prepared to improve the anti-wear performance of PEEK in aqueous boundary lubrication. The COF and wear rate of PEEK composite with 0.25 wt% MoS2 were significantly reduced, and a COF of less than 0.05 was achieved for the first time. The anti-wear performance of the PEEK/MoS2 composite was found to be better than that of PEEK/CF and Thordon composites, making it a potential material for underwater equipment.
Article
Chemistry, Applied
Guojing Chen, Shuai Jiang, Yufei Huang, Haosheng Pang, Xuan Yin, Chunpeng Chai
Summary: Ti3C2Tx MXene can improve the wear resistance of polyimide (PI) matrix under complex working conditions. The Ti3C2Tx/PI composites have excellent frictional properties and form a transfer film during friction, which prevents further wear of the material. Therefore, two-dimensional MXene has the potential to be used in friction-protective layers.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Materials Science, Multidisciplinary
Junde Guo, Yingxiang Zhao, Biao Sun, Puchao Wang, Zhijie Wang, Hao Dong
Summary: Nano-copper particles used as lubricating oil additives have good anti-friction and anti-wear effects, but tend to aggregate in application. Regulating the size effect and surface properties of nanoparticles plays an important role in compensating for manufacturing precision accuracy.
Article
Engineering, Multidisciplinary
Yang DongSheng, Chen WenYuan, Chen Jiao, Sun QiChun, Tan Hui, Cheng Jun
Summary: This study demonstrates that Ga-based liquid metal (GLM) can serve as a promising extreme pressure lubricant for steel-ceramic sliding pairs, forming a Ga-rich metallic tribofilm that provides good lubricity and bearing capability. The lubrication performance of GLM strongly depends on its composition and the contacting materials, with ternary Ga-In-Sn alloy showing superior lubrication compared to binary Ga-In alloy.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Le Van Sang
Summary: This study designs graphene nanoparticles using molecular dynamics and investigates their lubricity. The nanoparticles show stable lubrication at extremely high pressure and temperature, with ultralow friction coefficients between the diamond slab and the nanoparticles.
Article
Engineering, Mechanical
Jianhui Yuan, Yangguang Yao, Mingxiang Zhuang, Yeyuan Du, Liang Wang, Zhishui Yu
Summary: High manganese steel components coated with NiCr/TiC or NiCr/TiC-Cu-WS2 using laser cladding technology exhibit improved hardness and wear resistance. The addition of Cu reduces wear loss, while the synergistic lubrication of Cu, CrS, and WS2 significantly enhances wear resistance. Overall, laser clad self-lubricating anti-wear coatings show promising tribological performance.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Jiakun Wu, Haikuo. Wang, Chao Wang, Zhicai Zhang, Yao Tang, Zhiqiang Hou, Shun Wan, Dazhuan Wu, Zhongjun Tan, Xiaoping Ouyang
Summary: In this paper, Al2O3-cBN-hBN self-lubricating material was designed and the mechanical and thermal properties of the composites were improved by adding cBN particles. However, excessive volume fraction of cBN can lead to a truss effect that reduces pressure transfer efficiency. Different hBN content can change the wear mechanism, and the large modulus difference between cBN and hBN enhances the release efficiency of hBN particles.
MATERIALS & DESIGN
(2022)
Article
Engineering, Mechanical
Busra Duran, Jerome Cavoret, David Philippon, Fabrice Ville, Arnaud Ruellan, Frank Berens
Summary: This study analyzes the changes in the physicochemical properties and tribological performances of gear transmission oils during field operation, finding differences from traditional engine oils.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Baocheng Liu, Hongsheng Chen, Jun Zhou, Jing Wang, Wenxian Wang, Xiaochun Chen, Sanxiao Xi
Summary: This study used fast hot pressing sintering to fabricate WC/AlCoCrFeNi2.1 metal matrix composites (MMCs). It was found that the addition of reinforced particles increased the microhardness, nanoindentation and wear resistance of the MMCs. During frictional processes, an oxide film formed, providing material protection, enhancing stability and reducing friction-induced losses.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Pradip Kumar Verma, Alok Singh
Summary: This study investigates the mechanical properties and wear resistance of CoMoMnNiV high entropy alloy reinforced aluminium matrix composite processed through stir-squeeze casting assisted with an ultrasonic transducer. The results show significant improvements in mechanical properties and wear resistance, with the composite containing 8 wt% HEA demonstrating the highest resistance to wear. Optical microscopy, SEM, and an optical profilometer were used for a thorough examination of the microstructure and worn surface.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Zhenghai Yang, Yingjian Song, Jinlong Jiao, Wenbo Li, Bao Shangguan, Yongzhen Zhang
Summary: This study investigated the friction, wear properties, and current-carrying properties of copper-graphite composites paired with brass C28000. The results showed that the current-carrying properties of the composite materials were excellent, but their wear rate was the main limiting factor. Furthermore, an increase in the thickness of the graphite layer led to an improvement in the uniformity of damage.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Moustafa Mahmoud Yousry Zaghloul, Karen Steel, Martin Veidt, Michael T. Heitzmann
Summary: This research evaluates and compares the impact of different material types on the tribological characteristics of Polyamide 6 composites, and finds that glass fiber-reinforced Polyamide 6 exhibits better friction and wear performance under high-pressure velocity factors.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Shaoqing Qin, Lida Zhu
Summary: In this paper, the surface and subsurface damage of laser assisted grinding CrCoNi medium entropy alloys were investigated using molecular dynamics simulations. The results showed that the application of laser energy can reduce cutting forces and minimize subsurface damage.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Kaikui Zheng, Youxi Lin, Tingzheng Lai, Chenghui Gao, Ming Liu, Zhiying Ren
Summary: The study investigated the use of waste foundry resin-bonded sand as a substitute for copper in resin-based brake material. It found that the waste sand was more favorable for improving the overall friction and wear properties of the material compared to copper. Waste sand benefited the material by forming a friction layer, leading to increased friction coefficient and stability. Brake material with 10-15% waste sand showed excellent heat-fade resistance.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Dayang Li, Fanhao Zhou, Yutong Gao, Kun Yang, Huimin Gao
Summary: This article introduces a continuous prediction model based on deep learning for predicting the power output of steam turbines. The model uses long short term memory (LSTM) method to develop a trend prediction model and optimizes the prediction model through feature selection method. Experimental results show that the model outperforms other models in terms of prediction performance.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Tomohiro Toyoda, Ryo Yasuike, Toshihiro Noda
Summary: In this study, a elasto-plastic constitutive model of friction incorporating the concept of superloading surface was developed based on the subloading friction model. The proposed model achieves a smooth transition of friction by describing the evolution rule of structure, treating the state with static friction coefficient larger than kinetic friction coefficient as the bulkiness of structure. The positive definiteness of the plastic multiplier, loading condition, and material parameters were derived, and the validity of the proposed model in accordance with the subloading-friction model was confirmed through a stick-slip simulation of a mass-spring system.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
P. Balaji, B. Surya Rajan, K. Sathickbasha, P. Baskara Sethupathi, Deviga Magadevan
Summary: This study emphasizes the importance of using a variety of solid lubricants with different oxidation temperature regimes to enhance the tribological performance of brake pads.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Jian Ma, Yancong Liu, Javad Mostaghimi, Na Zhang
Summary: This paper investigates the influence of preparation strategies on the lubrication properties of surface textures. Three laser scanning strategies are proposed to achieve a sinusoidal textured surface, and the evolution of surface structure and chemical composition is discussed. The findings show that ridge structures enhance anti-wear properties but also increase the friction coefficient. However, the oil cover preparation method prevents the formation of ridges and improves wettability.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Mohammad Roostaei, Arvin Taghizadeh Tabrizi, Hossein Aghajani
Summary: In this research, the Al2O3/MoS2 nanocomposite coating layer was successfully applied on the surface of Ti-6Al-4 V alloy. The relation between the surface characteristics and wear resistance of the coating was studied using atomic force microscopy analysis and pin-on-disk wear test method. The results showed that the nanocomposite coating significantly reduced the wear rate and provided an equation to calculate the Lancaster coefficient.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Musa Bilgin, Sener Karabulut, Halil Karakoc, Yunus Kayir, Murat Sarikaya
Summary: This study investigates various methods to improve the machinability efficiency of Inconel 718 alloy while considering their effect on microstructural properties. The results show that hot+PMQL, hot+SiCNMQL, and hot+Al2O3-NMQL contribute significantly to the improvement of machinability characteristics. The EBSD analysis also reveals that a limited area is affected by heat in the hot machining environment and that the removal of the heated layer during milling process helps preserve the microstructure.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Q. Gao, Y. Fan, Y. G. Wu, J. L. Liu, J. Wang, L. Li
Summary: Fretting wear significantly affects the hysteresis behavior of the contact surface and leads to joint degradation. This study investigates the influence of harmonic normal force on the evolution of interface morphology and contact parameters with fretting wear. The results show that the harmonic normal force can significantly influence the hysteresis loop and the energy dissipation distribution on the contact surface.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Benjamin Weiland, Floriane Leclinche, Anis Kaci, Brigitte Camillieri, Betty Lemaire-Semail, Marie -Ange Bueno
Summary: This study presents a systematic approach to generating control signals for a tactile simulator that simulate the touch of textile fabrics. By using a friction modulation tactile surface and acquiring forces from real surfaces with artificial finger mimicking fingerprints, control signals are generated and processed in the frequency domain before sending them to the tactile stimulator. The study focuses on the potential benefits of incorporating fingerprint information in fabric simulations to achieve a more realistic tactile perception. A sensory analysis with 36 participants using the generated control signals showed better discrimination without fingerprint information.
TRIBOLOGY INTERNATIONAL
(2024)