Sandra Gajević¹, Slavica Miladinović¹, Jelena Jovanović¹, Onur Güler², Serdar Özkaya², Blaža Stojanović^1,*

CMC-Computers, Materials & Continua, Vol.84, No.3, pp. 4341-4361, 2025, DOI:10.32604/cmc.2025.065645 - 30 July 2025

Abstract This paper presents an investigation of the tribological performance of AA2024–B₄C composites, with a specific focus on the influence of reinforcement and processing parameters. In this study three input parameters were varied: B₄C weight percentage, milling time, and normal load, to evaluate their effects on two output parameters: wear loss and the coefficient of friction. AA2024 alloy was used as the matrix alloy, while B₄C particles were used as reinforcement. Due to the high hardness and wear resistance of B₄C, the optimized composite shows strong potential for use in aerospace structural elements and automotive brake components. The… More >

X. Y. Gao^*, P. Lu, Z. M. Xu, G. G. Tang

Chalcogenide Letters, Vol.21, No.5, pp. 395-405, 2024, DOI:10.15251/CL.2024.215.395

Abstract g-C₃N₄ has a strong C-N covalent bond within the monolayer and a weak van der Waals force between the lamels, which enables it to have similar lubrication properties to other two-dimensional layered materials. In this study, a new type of g-C₃N₄/MoS₂/ZnS heterogeneous nanocomposites was prepared by a one-step hydrothermal method XRD, SEM, FI-IR, and other methods were used to systematically study it. Furthermore, a ball-on-disk tribometer extensively examined the tribological behavior of g-C₃N₄/MoS₂/ZnS heterojunction in pure oil. The relationship between applied load and rotational speed on performance is also revealed. Compared with g-C₃N₄ and g-C₃N₄/MoS₂ nanocomposites, g-C₃N₄/MoS₂/ZnS has More >

E. Lu^*, M. Q. Wu, L. L. Dai, X. Y. Xu

Chalcogenide Letters, Vol.20, No.7, pp. 469-476, 2023, DOI:10.15251/CL.2023.207.469

Abstract This study used a simple one-step hydrothermal method to synthesize the MoS₂/GR composites with a new morphology composed of graphene nanotubes and ultra-thin molybdenum disulfide with the help of sodium chloride. The composites were characterized by XRD, XPS, SEM, TEM, and a series of characterization methods. Meanwhile, the tribological properties of the composites were studied. The results show that the addition of 1% MoS₂/GR composite nanotubes has excellent tribological properties. In addition, the structure and excellent tribological properties of MoS₂-C- nanocomposite lubrication materials will be conducive to designing new nanomaterials with 2D/3D structures, enhancing the anti-friction and More >

T. X. Liu^a, C. A. Guo^a,*, F. S. Lu^b, X. Y. Zhang^a,c, L. Zhang^b, Z. J. Wang^a, Z. Y. Xu^a, G. L. Zhu^a

Chalcogenide Letters, Vol.20, No.10, pp. 741-749, 2023, DOI:10.15251/CL.2023.2010.741

Abstract Electrospark deposition coatings were prepared with different deposition voltage on CrNi3MoVA steel substrates by using a W-WS₂ sintered electrode and their tribological properties were investigated. The microhardness, roughness and tribological properties of the coatings were tested by using Vickers hardness tester, confocal laser scanning microscope and tribometer, and the morphologies, composition and phase structure were obtained by utilizing scanning electron microscopy (SEM), energy dispersive X-ray spectrum (EDS) and X-ray diffraction(XRD). The results showed that with the increase of deposition voltage, the hardness and roughness of the coatings increase. The coatings remarkably increase the tribological properties of More >

Na Yao^1,2, Haiyang Ding^1,2,*, Mei Li², Pengcheng Wang³, Shouhai Li^1,2, Lina Xu², Xiaohua Yang²

Journal of Renewable Materials, Vol.11, No.3, pp. 1367-1381, 2023, DOI:10.32604/jrm.2022.023411 - 31 October 2022

Abstract A tung oil-based boron-nitrogen coordination polymer (TWE-BN) was specially designed and synthesized as a highly efficient water-based lubricant additive, which has been beneficial to both energy conservation and conducive to environmental protection. Its hydrolysis stability and tribological properties in water were investigated. To better research the lubricating properties, and thus to understand the interaction between the surface and the lubricating additives. Herein, both experimental and theoretical computations based on density functional theory (DFT) were performed. The addition of TWE-BN reduces the water friction coefficient and wear scar diameter, and the maximum non-seizure load increased from More > Graphic Abstract

Xin Feng, Yichao Hu, Zhengfeng Cao, Yanqiu Xia*

Journal of Renewable Materials, Vol.7, No.5, pp. 441-449, 2019, DOI:10.32604/jrm.2019.04881

Abstract Three kinds of crop leaf-surface waxes were extracted from wheat, corn and broomcorn leaves, respectively. The crop leaf-surface waxes as lubricant additives were added to synthetic ester and the friction and wear properties of prepared lubricants for steel-aluminum and steel-copper friction pair were investigated in detail. The scanning electron microscopy (SEM) and secondary ion mass spectrometry (SIMS) were employed to explore the friction mechanisms. The results show that crop leaf-surface waxes could successfully reduce the friction and wear of steel-aluminum and steel-copper sliding friction pairs as compared with pure synthetic ester. For example, when the More >