Sintering, structure, and mechanical properties of nanophase SiC: A molecular-dynamics and neutron scattering study

Alok Chatterjee; Rajiv K. Kalia; Aiichiro Nakano; Andrey Omeltchenko; Kenji Tsuruta; Priya Vashishta; Chun Keung Loong; Markus Winterer; Sylke Klein

doi:10.1063/1.1289661

Sintering, structure, and mechanical properties of nanophase SiC: A molecular-dynamics and neutron scattering study

Alok Chatterjee, Rajiv K. Kalia, Aiichiro Nakano, Andrey Omeltchenko, Kenji Tsuruta, Priya Vashishta, Chun Keung Loong, Markus Winterer, Sylke Klein

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

Structure, mechanical properties, and sintering of nanostructured SiC (n-SiC) are investigated with neutron scattering and molecular-dynamics (MD) techniques. Both MD and the experiment indicate the onset of sintering around 1500 K. During sintering, the pores shrink while maintaining their morphology: the fractal dimension is ∼ 2 and the surface roughness exponent is ∼0.45. Structural analyses reveal that interfacial regions in n-SiC are disordered with nearly the same number of three- and fourfold coordinated Si atoms. The elastic moduli scale with the density as ∼ρ^μ, where μ = 3.4±0.1.

Original language	English
Pages (from-to)	1132-1134
Number of pages	3
Journal	Applied Physics Letters
Volume	77
Issue number	8
DOIs	https://doi.org/10.1063/1.1289661
Publication status	Published - Aug 21 2000
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Sintering, structure, and mechanical properties of nanophase SiC: A molecular-dynamics and neutron scattering study",

abstract = "Structure, mechanical properties, and sintering of nanostructured SiC (n-SiC) are investigated with neutron scattering and molecular-dynamics (MD) techniques. Both MD and the experiment indicate the onset of sintering around 1500 K. During sintering, the pores shrink while maintaining their morphology: the fractal dimension is ∼ 2 and the surface roughness exponent is ∼0.45. Structural analyses reveal that interfacial regions in n-SiC are disordered with nearly the same number of three- and fourfold coordinated Si atoms. The elastic moduli scale with the density as ∼ρμ, where μ = 3.4±0.1.",

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T1 - Sintering, structure, and mechanical properties of nanophase SiC

T2 - A molecular-dynamics and neutron scattering study

AU - Chatterjee, Alok

AU - Kalia, Rajiv K.

AU - Nakano, Aiichiro

AU - Omeltchenko, Andrey

AU - Tsuruta, Kenji

AU - Vashishta, Priya

AU - Loong, Chun Keung

AU - Winterer, Markus

AU - Klein, Sylke

PY - 2000/8/21

Y1 - 2000/8/21

N2 - Structure, mechanical properties, and sintering of nanostructured SiC (n-SiC) are investigated with neutron scattering and molecular-dynamics (MD) techniques. Both MD and the experiment indicate the onset of sintering around 1500 K. During sintering, the pores shrink while maintaining their morphology: the fractal dimension is ∼ 2 and the surface roughness exponent is ∼0.45. Structural analyses reveal that interfacial regions in n-SiC are disordered with nearly the same number of three- and fourfold coordinated Si atoms. The elastic moduli scale with the density as ∼ρμ, where μ = 3.4±0.1.

AB - Structure, mechanical properties, and sintering of nanostructured SiC (n-SiC) are investigated with neutron scattering and molecular-dynamics (MD) techniques. Both MD and the experiment indicate the onset of sintering around 1500 K. During sintering, the pores shrink while maintaining their morphology: the fractal dimension is ∼ 2 and the surface roughness exponent is ∼0.45. Structural analyses reveal that interfacial regions in n-SiC are disordered with nearly the same number of three- and fourfold coordinated Si atoms. The elastic moduli scale with the density as ∼ρμ, where μ = 3.4±0.1.

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Sintering, structure, and mechanical properties of nanophase SiC: A molecular-dynamics and neutron scattering study

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