Article
Materials Science, Ceramics
Shuai Cui, Haimin Zhai, Wensheng Li, Xiangjuan Fan, Xuqiang Li, Weichao Ning, Dangsheng Xiong
Summary: Fe-based amorphous coatings were successfully prepared on Q235 steel by detonation spray, and the wear mechanism and performance of the coatings were significantly influenced by the oxygen-fuel ratio. Coating B exhibited good wear resistance and the wear mechanism changed with sliding speed.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Engineering, Multidisciplinary
Ersin Cakir, Recai Fatih Tunay
Summary: Tamping machines are crucial for packing track ballast under railway tracks, especially when using concrete sleepers, and they also correct the alignment of the rails to reduce mechanical strain. Experimental study examined the tribological properties of tamping machine bearing systems and compared the results with aluminum bronze.
TEHNICKI VJESNIK-TECHNICAL GAZETTE
(2021)
Article
Engineering, Mechanical
Reza Tima, Farzad Mahboubi
Summary: The effect of heat treatment and plasma nitriding post-processes on medium and high boron electroless nickel coatings was investigated, showing that plasma nitrided coatings had significantly higher microhardness and improved tribological behavior compared to heat treated ones.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Mechanical
D. W. Wang, F. Q. Li, X. Chen, Z. Y. Xiang, F. Zhao
Summary: A simple and effective method is used to construct graphene coating on brass surface, and the effect of electric currents on tribological performances are studied. Larger current can reduce the friction co-efficient and contact resistance, and suppress the generation of friction-induced vibration. Surface analysis shows that the graphene coating is seriously damaged at a low current input, resulting in an increase of friction coefficient and generation of vibration. Numerical analysis suggests that larger current can help reduce the contact pressure and improve wear, as well as expand the graphene coating, leading to better contact and exploitation of its properties.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Coatings & Films
Veronica Testa, Stefania Morelli, Giovanni Bolelli, Luca Lusvarghi, Stefan Bjorklund, Shrikant Joshi
Summary: Adding TiC reinforcement to Tribaloy-400 based coatings can enhance hardness and wear resistance, with the coating containing approximately 25% TiC showing the best performance. The behavior of the coatings is temperature-dependent, with the formation of an oxide-based tribofilm at high temperatures significantly reducing wear rates.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Anderson G. M. Pukasiewicz, Willian R. de Oliveira, Rodolpho F. Vaz, Gelson B. de Souza, Francisco C. Serbena, Sergi Dosta, Irene G. Cano
Summary: The FeMnCrSi alloy deposited by Cold Gas Spray (CGS) process using N2 working gas at 1000 degrees C showed higher hardness, elastic modulus, cavitation resistance, and sliding wear resistance compared to deposition at 900 and 1100 degrees C. Samples sprayed with N2 at 1000 degrees C and He at 600 degrees C demonstrated higher compressive residual stress and flatness ratio as well. Tests were conducted on CGS sprayed 316 L stainless steel as a benchmark material.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Laurent Aubanel, Francesco Delloro
Summary: This study investigates a composite coating obtained by cold spray for its potential application in automotive internal combustion engines. The coating consists of a 410 L matrix and M2 tool steel reinforcements. The study examines the microstructure, mechanical properties, topography, and tribological behavior of the coatings and proposes the use of surface textures with protuberances for lubricated contacts.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Dichu Xu, Terry Harvey, Janire Martinez, Eider Begiristain, Cristina Dominguez-Trujillo, Laura Sanchez-Abella, Martin Browne, Richard B. Cook
Summary: Hydrophilic hydrogel coatings can improve the tribological and antifouling properties of biomedical device surfaces. The effect of crosslinking on the ability of hydrogels to form coatings on XLPE substrates and the mechanics and tribological performance of the coated substrates are not fully understood. This study deposited PEG hydrogels of different crosslinking levels onto XLPE substrates and assessed their wear performance and friction evolution. The 10% cross-linker hydrogel coating exhibited the lowest friction and wear among all the coatings tested.
Review
Chemistry, Physical
Changzhi Zhou, Zhangpeng Li, Shuwen Liu, Tianrong Zhan, Wenqiang Li, Jinqing Wang
Summary: Layered double hydroxide (LDH) has great potential in the field of lubrication due to its unique structure and adjustable properties. This review presents various methods to improve the anti-friction, anti-wear, and lubrication performance of LDH materials, and summarizes the specific applications of LDH in different lubrication scenarios.
APPLIED CLAY SCIENCE
(2022)
Article
Engineering, Mechanical
Wen Hao Kan, Huizhi Peng, Samuel Lim, Yuman Zhu, Kun Zhang, Aijun Huang
Summary: The sliding behavior of titanium alloys processed by laser powder bed fusion and conventionally-processed alloys was examined. Different microstructures were observed in these samples. When sliding against steel, oxidative, abrasive, and adhesive wear always occurred. However, wear rates were similar regardless of friction and hardness if material removal mainly occurred through abrasion or adhesion. Martensitic phases decomposed during sliding while nano-crystalline grains enhanced oxidative wear and reduced friction. By promoting oxidative wear over abrasive or adhesive wear, wear rates and friction can be substantially reduced with a stable nanocrystalline microstructure that provides ultrahigh hardness.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
P. Pereira, L. M. Vilhena, J. Sacramento, A. M. R. Senos, L. F. Malheiros, A. Ramalho
Summary: WC-based composites are widely used in mechanical applications due to their excellent wear and corrosion resistance. However, the use of cobalt as a binder poses supply risk and economic concerns. This study focuses on developing new cemented carbide grades to substitute cobalt binder and investigates their mechanical and tribological properties through wear tests and scratch tests.
Article
Materials Science, Coatings & Films
Rahul Jude Alroy, M. Kamaraj, G. Sivakumar
Summary: In this study, fine and coarse Cr3C2-25NiCr particles were sprayed using HVAF and oxygen-augmented HVAF(O) modes. Heat treatment was conducted to enhance the microstructural features and mechanical properties of the coatings. The phase composition, microstructural features, and mechanical properties of the as-deposited and heat-treated coatings were extensively examined. Subsequently, a high-load sliding test was performed to assess the influence of processing conditions and heat treatment on the sliding wear performance of Cr3C2-25NiCr coatings. Detailed post-wear analyses were then conducted to analyze the wear rate/mechanism. The results demonstrated that the appropriate choice of process parameters and heat treatment conditions improved the sliding wear performance of Cr3C2-25NiCr coatings.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Satyapal Mahade, Antonio Mulone, Stefan Bjorklund, Uta Klement, Shrikant Joshi
Summary: Graphene in coatings can enhance tribological performance, with graphene nano-platelets (GNP) incorporated in alumina coating showing lower CoF and wear rate, higher fracture toughness, and good microstructural integrity compared to monolithic alumina coating. The results suggest the potential of GNP to improve wear resistance in coating systems.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Mechanical
Longjiang Peng, Jian Li, Meng Zhang, Huaijun Lin, Zu Li, Wei Li
Summary: This study characterized the tribological behaviors of a Zr-based BMG material against GCr15 steel balls under different loads and frequencies. It was found that high coefficient of friction (COF) was observed under low load and high frequency, while low COF was observed under high loads or at low frequencies. The specific wear rate increased with both load and frequency, with frequency playing a more crucial role. Transition of wear mechanisms from oxidative wear and abrasive wear to adhesive wear was detected with increasing load and frequency, and the role of plastic deformation of BMG was illustrated. This study helps to understand the tribological properties of Zr-based BMGs under sliding conditions.
Article
Materials Science, Characterization & Testing
Halil Kilic, Cenk Misirli, Ibrahim Mutlu
Summary: The comparative research on the Mo/NiCrBSi coated automobile brake disc showed that the coating has good bonding strength, comparable coefficient of friction, and lower wear compared to the reference disc. The addition of ductile phases in the coating was found to effectively reduce the coefficient of friction to an acceptable degree while improving wear resistance.
