Thermal conductivity of EB-PVD ZrO2-4 mol% Y2O 3 films using the laser flash method

Byungkoog Jang, Yoshio Sakka, Norio Yamaguchi, Hideaki Matsubara, Hyung Tae Kim

研究成果: ジャーナルへの寄稿記事

16 引用 (Scopus)

抄録

The variation in thermal conductivity and thermal diffusivity of ZrO 2-4 mol% Y2O3 coatings deposited onto Inconel substrates by EB-PVD is examined as a function of coating thickness using the laser flash method. The coatings are found to consist of columnar grains with a feather-like microstructure. The thermal conductivities of the coatings are calculated using two methods: the first involves separating the coating from the substrate and measuring the thermal diffusivity directly; the second uses thermal diffusion results from coatings still attached to the substrate and is based on the response function method. The results of both methods are in excellent agreement, and show that the thermal conductivities of the coatings increase with increasing coating thickness. The results also confirm that the double layer method can be used successfully to calculate the thermal conductivities of thin film coatings.

元の言語英語
ページ(範囲)1045-1049
ページ数5
ジャーナルJournal of Alloys and Compounds
509
発行部数3
DOI
出版物ステータス出版済み - 1 21 2011

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Physical vapor deposition
Thermal conductivity
Coatings
Lasers
Thermal diffusivity
Substrates
Thermal diffusion
Thin films
Microstructure

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

これを引用

Thermal conductivity of EB-PVD ZrO2-4 mol% Y2O 3 films using the laser flash method. / Jang, Byungkoog; Sakka, Yoshio; Yamaguchi, Norio; Matsubara, Hideaki; Kim, Hyung Tae.

:: Journal of Alloys and Compounds, 巻 509, 番号 3, 21.01.2011, p. 1045-1049.

研究成果: ジャーナルへの寄稿記事

Jang, Byungkoog ; Sakka, Yoshio ; Yamaguchi, Norio ; Matsubara, Hideaki ; Kim, Hyung Tae. / Thermal conductivity of EB-PVD ZrO2-4 mol% Y2O 3 films using the laser flash method. :: Journal of Alloys and Compounds. 2011 ; 巻 509, 番号 3. pp. 1045-1049.
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