1847 ナノポア間隔が熱伝導率に及ぼす影響に関する分子動力学的研究(GO6-6 MD応用・伝熱応用(1),G06 熱工学)

概要

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Hole structures in nanometer scale in the ceramic coating layers are called as nano-pores and they are believed to cause low thermal conductivity of the ceramic coating. However, it is not well understood why and how the nano-pores reduce the thermal conductivity of the materials. In order to elucidate the mechanism of low thermal conductivity caused by nano-pores, thermal conductivity is calculated in a model thin film with and without nano-pores by the molecular dynamics simulations. Configurations and distances between nano-pores were changed as calculation parameters in the present study. The calculation results show that the thermal conductivity of the thin film was actually decreased by nano-pores when the distance between nano-pores was less than l2nm and the thermal conductivity of the thin film was dramatically decreased when the distance between nano-pores was less than 2nm.
一般社団法人日本機械学会の論文
2007-09-07