Microstructural, mechanical and friction properties of nano-graphite and h-BN added TiC-based composites

Nguyen, Van‐Huy; Delbari, Seyed Ali; Namini, Abbas Sabahi; Babapoor, Aziz; Le, Quyet Van; Jang, Ho Won; Shokouhimehr, Mohammadreza; Asl, Mehdi Shahedi; Mohammadi, Mohsen

doi:10.1016/j.ceramint.2020.08.068

Cited by 23 publications

(1 citation statement)

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“…It can also enhance the unconfined compressive strength and shear strength of the compacted clay [58], as well as yield strength and hardness of alloy [59]. Carbon nanomaterials, such as graphite nanoparticles (GN), have been used to enhance mechanical properties of composites, due to their unique small size effect, surface effect, and other nanomaterial effects [60][61][62]. For example, graphene nanoplatelets (GNP) were found to be able to increase the Young's modulus, tensile yield strength, and tensile breaking strength and reduce tensile elongation at break of composite materials [63].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Microscopic Properties of Graphite/Laterite Nanocomposites

Gao

Zhang³

et al. 2021

Advances in Materials Science and Engineering

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The effectiveness and improvement mechanism of graphite nanoparticles (GN) in strength properties and microstructure characteristics of regional laterite were analysed in this study. Dry density was also taken into consideration, and the effects of graphite nanoparticle (GN) content and dry density were mainly addressed. Triaxial tests, consolidation tests, and penetration tests were used to analyse the effectiveness of different dry densities and graphite nanoparticle mass ratios on the properties of laterite; microscopic methods such as scanning electron microscopy (SEM) tests were used to analyse the improvement mechanism. The results show that the increase in dry density can make the laterite more compact. The large specific surface area and nanoeffects of the graphite nanoparticles (GN) induce the attraction between soil particles after mixing, both of which make the laterite’s shear strength; compression index and impermeability have been enhanced to varying degrees. The microscopic tests showed that, as the content of graphite nanoparticles (GN) continues to increase, when it exceeds 1.0%, the attraction between soil particles increases and coarse particles are formed, which leads to the increase of the pores of the soil. In addition, the graphite nanoparticles have a certain degree of lubricity, a high amount of graphite nanoparticles enters the laterite soil layer, increasing the distance and gap between the layers, making it easy to separate the coarse particles from the coarse particles, and the strength increase is reduced. However, it is still stronger than that of the plain laterite.

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