Thermal conductivity of zirconia for thermal barrier coatings: A perturbed molecular dynamics study

Masato Yoshiya, Mineaki Matsumoto, Akihiko Harada, Munetaka Takeuchi, Hideaki Matsubara

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Thermal conductivity of pure and Y2O3-doped ZrO 2 was calculated using a perturbed molecular dynamics method in order to analyze phonon scattering mechanism which is responsible for the reduction of thermal conductivity. Although absolute values of thermal conductivity were overestimated due to a simple model used in this study, relative values were in good agreement with experiment, which indicates that phonon scattering due to Y2O3 addition is reproduced well. It is found from quantitative analysis of the phonon scattering using the mean field theory that decrease of the thermal conductivity upon Y2O3 addition is attributed not only to the introduction of O2- vacancies but also to substitution of Y3+ ions for Zr4+ ions.

本文言語English
ページ(範囲)521-524
ページ数4
ジャーナルKey Engineering Materials
317-318
DOI
出版ステータスPublished - 2006

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

フィンガープリント

「Thermal conductivity of zirconia for thermal barrier coatings: A perturbed molecular dynamics study」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル