Influence of number of layers on thermal properties of nano-structured zirconia film fabricated by EB-PVD method

Byung Koog Jang, Masato Yoshiya, Hideaki Matsubara

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

This work describes the experimental results of thermal conductivity and thermal diffusivity of the multi-layered ZrO 2-4 mol%Y 2O 3 (YSZ) film to develop the low thermal conductive thermal barrier coating. YSZ films with 2-5 layers were deposited on zirconia substrates by Electron Beam-Physical Vapor Deposition (EB-PVD). The YSZ layers consist of porous-columnar grains containing nano-pores. It is noted that multi layers contain residual pores at interface between layers. Density and thermal diffusivity of the multi-layered YSZ film decreased with increasing the number of layers. Consequently, the thermal conductivity of films decreased with increasing the number of layers. The decrease of thermal conductivity in multi layers is caused by increase of total porosity due to increase of the layer-interface pores, resulting the increase of the phonon scattering.

元の言語英語
ページ(範囲)56-60
ページ数5
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
69
発行部数1
DOI
出版物ステータス出版済み - 1 1 2005

Fingerprint

Physical vapor deposition
zirconium oxides
Zirconia
Electron beams
Thermodynamic properties
thermodynamic properties
vapor deposition
electron beams
Thermal conductivity
Thermal diffusivity
yttria-stabilized zirconia
porosity
Phonon scattering
Thermal barrier coatings
thermal conductivity
thermal diffusivity
diffusivity
Porosity
zirconium oxide
Substrates

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

これを引用

Influence of number of layers on thermal properties of nano-structured zirconia film fabricated by EB-PVD method. / Jang, Byung Koog; Yoshiya, Masato; Matsubara, Hideaki.

:: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 巻 69, 番号 1, 01.01.2005, p. 56-60.

研究成果: ジャーナルへの寄稿記事

@article{d759d53b4e1b43a3b0c58ce8130b3c1c,
title = "Influence of number of layers on thermal properties of nano-structured zirconia film fabricated by EB-PVD method",
abstract = "This work describes the experimental results of thermal conductivity and thermal diffusivity of the multi-layered ZrO 2-4 mol{\%}Y 2O 3 (YSZ) film to develop the low thermal conductive thermal barrier coating. YSZ films with 2-5 layers were deposited on zirconia substrates by Electron Beam-Physical Vapor Deposition (EB-PVD). The YSZ layers consist of porous-columnar grains containing nano-pores. It is noted that multi layers contain residual pores at interface between layers. Density and thermal diffusivity of the multi-layered YSZ film decreased with increasing the number of layers. Consequently, the thermal conductivity of films decreased with increasing the number of layers. The decrease of thermal conductivity in multi layers is caused by increase of total porosity due to increase of the layer-interface pores, resulting the increase of the phonon scattering.",
author = "Jang, {Byung Koog} and Masato Yoshiya and Hideaki Matsubara",
year = "2005",
month = "1",
day = "1",
doi = "10.2320/jinstmet.69.56",
language = "English",
volume = "69",
pages = "56--60",
journal = "Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals",
issn = "0021-4876",
publisher = "公益社団法人 日本金属学会",
number = "1",

}

TY - JOUR

T1 - Influence of number of layers on thermal properties of nano-structured zirconia film fabricated by EB-PVD method

AU - Jang, Byung Koog

AU - Yoshiya, Masato

AU - Matsubara, Hideaki

PY - 2005/1/1

Y1 - 2005/1/1

N2 - This work describes the experimental results of thermal conductivity and thermal diffusivity of the multi-layered ZrO 2-4 mol%Y 2O 3 (YSZ) film to develop the low thermal conductive thermal barrier coating. YSZ films with 2-5 layers were deposited on zirconia substrates by Electron Beam-Physical Vapor Deposition (EB-PVD). The YSZ layers consist of porous-columnar grains containing nano-pores. It is noted that multi layers contain residual pores at interface between layers. Density and thermal diffusivity of the multi-layered YSZ film decreased with increasing the number of layers. Consequently, the thermal conductivity of films decreased with increasing the number of layers. The decrease of thermal conductivity in multi layers is caused by increase of total porosity due to increase of the layer-interface pores, resulting the increase of the phonon scattering.

AB - This work describes the experimental results of thermal conductivity and thermal diffusivity of the multi-layered ZrO 2-4 mol%Y 2O 3 (YSZ) film to develop the low thermal conductive thermal barrier coating. YSZ films with 2-5 layers were deposited on zirconia substrates by Electron Beam-Physical Vapor Deposition (EB-PVD). The YSZ layers consist of porous-columnar grains containing nano-pores. It is noted that multi layers contain residual pores at interface between layers. Density and thermal diffusivity of the multi-layered YSZ film decreased with increasing the number of layers. Consequently, the thermal conductivity of films decreased with increasing the number of layers. The decrease of thermal conductivity in multi layers is caused by increase of total porosity due to increase of the layer-interface pores, resulting the increase of the phonon scattering.

UR - http://www.scopus.com/inward/record.url?scp=14844341128&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=14844341128&partnerID=8YFLogxK

U2 - 10.2320/jinstmet.69.56

DO - 10.2320/jinstmet.69.56

M3 - Article

AN - SCOPUS:14844341128

VL - 69

SP - 56

EP - 60

JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

SN - 0021-4876

IS - 1

ER -