Internal friction characterization of graphite

Wei, Jian; Huang, Tian Cheng; Zhao, Lei; Yu, Jiachen; Xie, Weifeng; Li, G. M.

doi:10.1007/s10853-008-2824-6

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…During the numerical calculations, the values of β and 0 θ are 0.834 and 0.192π, respectively, and other values of parameters in constitutive equations can be found in Refs. [2] and [11]. Obviously, the stress-strain curves keep a good agreement with experimental points.…”

Section: Resultssupporting

confidence: 78%

Constitutive Modeling of Nanocrystalline Materials with Shear Band

Zhou

Zhang

Wang

2011

AMR

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In hardening stage, a model was used to study the plastic deformation behaviors of nanocrystalline materials. The material was considered as a composite of grain interior phase and grain boundary (GB) phase. The constitutive equations of the two phases were determined in term of their main deformation mechanisms. In softening stage, a shear band deformation mechanism and the corresponding constitutive relation were presented. Calculation results have shown that the predications fit well with experimental data. The investigation using the ﬁnite-element method (FEM) provided a direct insight into quantifying shear localization effect in nanocrystalline materials.

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Section: Resultssupporting

confidence: 78%

Constitutive Modeling of Nanocrystalline Materials with Shear Band

Zhou

Zhang

Wang

2011

AMR

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“…Most plausibly, this mechanism is the sliding of the individual layers of the 2D materials along each other. The value U ≈ 16 kJ/mol is remarkably low, nearly by an order of magnitude lower than in bulk graphite [44], or graphite-reinforced metal-matrix composites [45]. For graphene and hexagonal boron nitride, the available literature data on friction are mostly from moleculardynamics calculations [18,26,46], and do not include any estimates of the activation energy.…”

Section: U [Kj/mol]mentioning

confidence: 99%

Ultrasonic Characterization of Nanoparticle-Based Ceramics Fabricated by Spark-Plasma Sintering

et al. 2021

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Resonant ultrasound spectroscopy was used to determine elastic constants and internal friction parameters of bulk nanoparticle-based ceramic materials compacted by spark plasma sintering. Boron nitride-based and boron carbon nitride-based materials were studied, and the results were compared with similar bulk materials prepared from graphene nanoplatelets. The results showed that such nanoparticle-based materials can be strongly anisotropic, and can have very different elastic constants depending on the nanoparticles used. From the temperature dependence of the internal friction parameters, the activation energy for sliding of the individual monolayers along each other was determined for each material. Very similar values of the activation energy were obtained for boron nitride, boron carbon nitride, and graphene, ranging from 15 to 17 kJ/mol.

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