Thermal conductivity and thermal cycle life of La2O3 and HfO2 doped ZrO2-Y2O3 coatings produced by EB-PVD

Mineaki Matsumoto; Takeharu Kato; Norio Yamaguchi; Daisaku Yokoe; Hideaki Matsubara

doi:10.1016/j.surfcoat.2009.01.033

Thermal conductivity and thermal cycle life of La₂O₃ and HfO₂ doped ZrO₂-Y₂O₃ coatings produced by EB-PVD

Mineaki Matsumoto, Takeharu Kato, Norio Yamaguchi, Daisaku Yokoe, Hideaki Matsubara

ENV - Environmental Studies for Advanced Society

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

35 Citations (Scopus)

Abstract

The effects of La₂O₃ and HfO₂ addition on thermal conductivity and thermal cycle life of EB-PVD YSZ coatings were investigated. La₂O₃ and HfO₂ were selected as additives, because they significantly suppress the sintering of YSZ. The developed coating showed low thermal conductivity as well as high resistance to sintering. Burner rig tests confirmed that the developed coating have a superior thermal insulating effect and have a longer life than that of a coating with conventional composition.

Original language	English
Pages (from-to)	2835-2840
Number of pages	6
Journal	Surface and Coatings Technology
Volume	203
Issue number	19
DOIs	https://doi.org/10.1016/j.surfcoat.2009.01.033
Publication status	Published - 2009 Jun 25

Keywords

EB-PVD
HfO
LaO
Precipitates
Sintering
Thermal barrier coatings
Thermal conductivity

ASJC Scopus subject areas

Chemistry(all)
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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title = "Thermal conductivity and thermal cycle life of La2O3 and HfO2 doped ZrO2-Y2O3 coatings produced by EB-PVD",

abstract = "The effects of La2O3 and HfO2 addition on thermal conductivity and thermal cycle life of EB-PVD YSZ coatings were investigated. La2O3 and HfO2 were selected as additives, because they significantly suppress the sintering of YSZ. The developed coating showed low thermal conductivity as well as high resistance to sintering. Burner rig tests confirmed that the developed coating have a superior thermal insulating effect and have a longer life than that of a coating with conventional composition.",

keywords = "EB-PVD, HfO, LaO, Precipitates, Sintering, Thermal barrier coatings, Thermal conductivity",

author = "Mineaki Matsumoto and Takeharu Kato and Norio Yamaguchi and Daisaku Yokoe and Hideaki Matsubara",

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T1 - Thermal conductivity and thermal cycle life of La2O3 and HfO2 doped ZrO2-Y2O3 coatings produced by EB-PVD

AU - Matsumoto, Mineaki

AU - Kato, Takeharu

AU - Yamaguchi, Norio

AU - Yokoe, Daisaku

AU - Matsubara, Hideaki

PY - 2009/6/25

Y1 - 2009/6/25

N2 - The effects of La2O3 and HfO2 addition on thermal conductivity and thermal cycle life of EB-PVD YSZ coatings were investigated. La2O3 and HfO2 were selected as additives, because they significantly suppress the sintering of YSZ. The developed coating showed low thermal conductivity as well as high resistance to sintering. Burner rig tests confirmed that the developed coating have a superior thermal insulating effect and have a longer life than that of a coating with conventional composition.

AB - The effects of La2O3 and HfO2 addition on thermal conductivity and thermal cycle life of EB-PVD YSZ coatings were investigated. La2O3 and HfO2 were selected as additives, because they significantly suppress the sintering of YSZ. The developed coating showed low thermal conductivity as well as high resistance to sintering. Burner rig tests confirmed that the developed coating have a superior thermal insulating effect and have a longer life than that of a coating with conventional composition.

KW - EB-PVD

KW - HfO

KW - LaO

KW - Precipitates

KW - Sintering

KW - Thermal barrier coatings

KW - Thermal conductivity

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