Recent Progress in the Study of Thermal Properties and Tribological Behaviors of Hexagonal Boron Nitride-Reinforced Composites

Khalaj, Maryam; Golkhatmi, Sanaz Zarabi; Alem, Sayed Ali Ahmad; Baghchesaraee, Kahila; Azar, Mahdi Hasanzadeh; Angizi, Shayan

doi:10.3390/jcs4030116

Cited by 27 publications

(9 citation statements)

References 180 publications

(296 reference statements)

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“…The presence of flattened and scaled debris may also imply the occurrence of an adhesive mechanism. Cu-WS 2 -IF (Figure 9B) exhibits a smoother and more homogenous tribo-layer, thanks to the synergic effect of WS 2 and IF nanoparticles that permits to avoid an accentuated debris formation due to the counter ball sliding [56]. As already noticed by the optical microscopy (Figure 8D), the worn surface of Cu-WS 2 -IF-GNP (Figure 9C) is more jagged and debris-rich, confirming a possible thirdbody mechanism that periodically enlarges the wear track and favors the accumulation of removed material.…”

Section: Wear Testmentioning

confidence: 99%

Employment of Micro- and Nano-WS2 Structures to Enhance the Tribological Properties of Copper Matrix Composites

et al. 2021

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Friction and wear are responsible for around 23% of the energy consumption in transportation, manufacturing, power generation, and residential sectors. Employed components are exposed to a wide range of operational conditions, therefore a suitable material design is fundamental to decreasing tribological issues, energy consumption, costs, and environmental impact. This study aims to analyze the effect of different solid lubricants on the suitability of copper matrix composites (CuMCs) as a potential solution to reduce the depletion of sliding electrical contacts working under extreme conditions. CuMCs samples are produced by cold-pressing and sintering to merge a high electrical conductivity with the lubricant effect supplied by different species, namely tungsten disulfide micro-powder (WS2), inorganic fullerene-like (IF) tungsten disulfide nanoparticles, and graphene nanoplatelets (GNP). The crystalline structure of the pristine and composite materials is characterized via XRD. The electrical tests show a small decrease of conductivity compared to pure copper, due to the insulating effect of WS2; however, the measured values are still adequate for conduction purposes. Micro-scratch and wear tests highlight the positive effect of the combination of WS2 structures and GNP. The friction coefficient reduction leads to the possibility of extending the lifetime of the components.

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Section: Wear Testmentioning

confidence: 99%

Employment of Micro- and Nano-WS2 Structures to Enhance the Tribological Properties of Copper Matrix Composites

et al. 2021

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“…2D hexagonal boron nitride (h-BN) has also recently become a highly demanded energy materials functioning in many applications, from electrodes and electrolytes in batteries to membranes or catalysts in fuel cell units [7,8]. A recent wave of research on 2D h-BN-based energy applications, shown in Figure 1a,b, originates from the synergistic impacts of high thermal and chemical stabilities, superior thermal conductivity, and the electrically insulative nature of 2D h-BN [8][9][10]. The term h-BN refers to a layered nanomorphology of boron (B) and nitrogen (N) atoms in a sp 2 hybridized honeycomb-shaped lattice [11,12].…”

Section: Introductionmentioning

confidence: 99%

Towards Integration of Two-Dimensional Hexagonal Boron Nitride (2D h-BN) in Energy Conversion and Storage Devices

2022

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The prominence of two-dimensional hexagonal boron nitride (2D h-BN) nanomaterials in the energy industry has recently grown rapidly due to their broad applications in newly developed energy systems. This was necessitated as a response to the demand for mechanically and chemically stable platforms with superior thermal conductivity for incorporation in next-generation energy devices. Conventionally, the electrical insulation and surface inertness of 2D h-BN limited their large integration in the energy industry. However, progress on surface modification, doping, tailoring the edge chemistry, and hybridization with other nanomaterials paved the way to go beyond those conventional characteristics. The current application range, from various energy conversion methods (e.g., thermoelectrics) to energy storage (e.g., batteries), demonstrates the versatility of 2D h-BN nanomaterials for the future energy industry. In this review, the most recent research breakthroughs on 2D h-BN nanomaterials used in energy-based applications are discussed, and future opportunities and challenges are assessed.

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“…The calculated wear coefficients ranged from 0.1 to 0.4. According to the classification of the wear condition as a function of wear coefficient [76,77], they correspond to unlubricated sliding and wear by hard particles, i.e., the severe wear and abrasive mechanisms. The specific wear rate range, 0.5-1.9, confirmed the mechanism [78].…”

Section: Confocal Laser Scanning Microscopymentioning

confidence: 99%

Physico-Mechanical Properties of Metal Matrix Self-Lubricating Composites Reinforced with Traditional and Nanometric Particles

et al. 2022

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Innovative nanostructured materials offer the possibility of enhancing the tribological performance of traditional materials like graphite and molybdenum disulfide (MoS2). In this study, the scratch resistance of two different copper powders, dendritic and spherical, and their composites with traditional MoS2, nanometric MoS2, and graphene nanoplatelets was investigated. Metal powder metallurgy was employed to produce composite materials with 5 wt% and 10 wt% of each solid lubricant. A ball milling step was employed to grind and mix the matrix copper powder with the lubricants. The use of a cold press combined with the sintering in inert atmosphere at 550 °C limited the oxidation of the copper and the degradation of the solid lubricants. The so-produced materials were characterized through a variety of techniques such as micro-indentation hardness, electrical resistivity, contact angle wettability, X-ray diffraction, Raman scattering, and scanning electron microscopy. Moreover, micro-scratch tests were performed on both pure copper and composite materials for comparing the apparent scratch hardness and friction coefficients. The scratches were examined with confocal laser scanning microscopy (CLSM), to identify the evolution of the damage mechanisms during the formation of the groove. The results highlighted the important difference between the dendritic and spherical copper powders and demonstrated a way to improve wear behavior thanks to the use of nanometric powders as solid lubricants.

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Recent Progress in the Study of Thermal Properties and Tribological Behaviors of Hexagonal Boron Nitride-Reinforced Composites

Cited by 27 publications

References 180 publications

Employment of Micro- and Nano-WS2 Structures to Enhance the Tribological Properties of Copper Matrix Composites

Employment of Micro- and Nano-WS2 Structures to Enhance the Tribological Properties of Copper Matrix Composites

Towards Integration of Two-Dimensional Hexagonal Boron Nitride (2D h-BN) in Energy Conversion and Storage Devices

Physico-Mechanical Properties of Metal Matrix Self-Lubricating Composites Reinforced with Traditional and Nanometric Particles

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