Comparative study of mechanical and wear behavior of Cu/WS 2 composites fabricated by spark plasma sintering and hot pressing

Wang, Qunchang; Chen, Ming‐Hui; Shan, Zhongmao; Sui, Chengguo; Zhang, Lin; Zhu, Shenglong; Wang, Fuhui

doi:10.1016/j.jmst.2017.06.014

Cited by 59 publications

(26 citation statements)

References 25 publications

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“…During sintering of Cu/WS2 by PECS, non-uniformity in temperature through the sintered body, cause degradation of the solid lubricant, resulting easily in less efficient self-lubrication. Therefore, process parameters require careful optimisation [66]. For example, while WS2 alloyed WC -Ni -Cr composite has inferior friction properties when sintered at 1300 °C, increasing the uniaxial pressure to 250 MPa during pulsed electric current sintering reduces the sintering temperature to 950 °C and the CoF of the composite (against WC -Ni) drops below 0.2 [67].…”

Section: Lamellar Solidsmentioning

confidence: 99%

Al2O3–cBN composites sintered by SPS and HPHT methods

Klimczyk

Cura

Vlaicu

et al. 2016

Journal of the European Ceramic Society

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Section: Lamellar Solidsmentioning

confidence: 99%

Al2O3–cBN composites sintered by SPS and HPHT methods

Klimczyk

Cura

Vlaicu

et al. 2016

Journal of the European Ceramic Society

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“…At higher volumes fraction of CNT, agglomeration areas appear and these weak joint segments reduce mechanical properties. Tungsten disulfide nanoparticles have also been used in recent years to enhance the mechanical and tribological properties of metal matrices such as magnesium [8,9], copper [10] and aluminum [11,12]. Ranjifo et al [11] investigated the effect of adding tungsten disulfide nanoparticles to the aluminum on tribological behavior at ambient temperature and 200°C.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of WS₂/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite

Vaziri

Shokuhfar

Afghahi

2020

Mater. Res. Express

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In this study, a simple, safe and cost-effective method was developed for fabricating the tungsten disulfide/carbon nanotube (WS 2 /CNT) hybrid nanoparticles via chemical vapor deposition (CVD) process. Hybrid nanoparticles used for reinforcing the aluminum matrix. The hybrid nanocomposites were prepared by powder metallurgy processing and consolidated by the Hot-Pressing process. The chemical composition and morphology of the WS 2 /CNT hybrid particles were studied by x-ray diffraction (XRD), filed emission scanning electron microscopy (FESEM), Raman spectra, Fouriertransform infrared spectroscopy (FTIR) and thermo gravimetric analysis (TGA). The results proved that the uniform, pure and tubular WS 2 / CNT hybrid nanoparticles were produced and WS 2 nanoparticles were decorated the CNT surface successfully. Optical microscopy (OM) and FESEM used for characterization of the microstructure of hybrid nanocomposite, indicate a good distribution of hybrid nanoparticles in the aluminum matrix. Maximum values of relative density, hardness and compressive strength were measured for sample with WS 2 /CNT ratio of 1:1. A relative density of more than 99.5% was obtained for this sample. Hardness and compressive strength were improved by 43% and 60% compared with pure aluminum respectively.

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“…A significant reduction in friction and wear rate for Cu/WS 2 composites due to the formation of the beneficial hard phase of W and lubricating phase of Cu 2 S was reported in [ 89 , 90 ]. The inclusion of WS 2 in the Cu matrix demonstrated an improved mechanical and tribological property as compared to the composite with the same concentration of graphite due to the high strength of interfacial bonding between the Cu matrix and WS 2, resulting in a decreased plastic deformation (cracks formation) during sliding passes.…”

Section: Potential High-temperature Solid-lubricantsmentioning

confidence: 99%

Solid Lubrication at High-Temperatures—A Review

et al. 2022

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Understanding the complex nature of wear behavior of materials at high-temperature is of fundamental importance for several engineering applications, including metal processing (cutting, forming, forging), internal combustion engines, etc. At high temperatures (up to 1000 °C), the material removal is majorly governed by the changes in surface reactivity and wear mechanisms. The use of lubricants to minimize friction, wear and flash temperature to prevent seizing is a common approach in engine tribology. However, the degradation of conventional liquid-based lubricants at temperatures beyond 300 °C, in addition to its harmful effects on human and environmental health, is deeply concerning. Solid lubricants are a group of compounds exploiting the benefit of wear diminishing mechanisms over a wide range of operating temperatures. The materials incorporated with solid lubricants are herein called ‘self-lubricating’ materials. Moreover, the possibility to omit the use of conventional liquid-based lubricants is perceived. The objective of the present paper is to review the current state-of-the-art in solid-lubricating materials operating under dry wear conditions. By opening with a brief summary of the understanding of solid lubrication at a high temperature, the article initially describes the recent developments in the field. The mechanisms of formation and the nature of tribo-films (or layers) during high-temperature wear are discussed in detail. The trends and ways of further development of the solid-lubricating materials and their future evolutions are identified.

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Comparative study of mechanical and wear behavior of Cu/WS 2 composites fabricated by spark plasma sintering and hot pressing

Cited by 59 publications

References 25 publications

Al2O3–cBN composites sintered by SPS and HPHT methods

Al2O3–cBN composites sintered by SPS and HPHT methods

Synthesis of WS₂/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite

Solid Lubrication at High-Temperatures—A Review

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Comparative study of mechanical and wear behavior of Cu/WS 2 composites fabricated by spark plasma sintering and hot pressing

Cited by 59 publications

References 25 publications

Al2O3–cBN composites sintered by SPS and HPHT methods

Al2O3–cBN composites sintered by SPS and HPHT methods

Synthesis of WS2/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite

Solid Lubrication at High-Temperatures—A Review

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Product

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Synthesis of WS₂/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite