Influence of temperature on thermophysical properties of EB-PVD porous coatings and dense ceramics of 4 mol% Y2O3-stabilized ZrO2

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Abstract

This work describes the experimental results of thermal diffusivities, thermal conductivities, and thermal resistivities of single coatings, double coatings, and sintered ceramics of 4 mol% Y2O3-stabilized ZrO2 in a temperature range from room temperature to 1000 °C. The fractured surface of the coated samples revealed a columnar microstructure. The thermal conductivities and thermal diffusivities of both EB-PVD coatings and sintered ceramics decreased with increasing temperature. The thermal diffusivities and thermal conductivities of double-layer coatings were lower than those of single-layer coatings and sintered ceramics at a given temperature.

Original languageEnglish
Pages (from-to)806-809
Number of pages4
JournalJournal of Alloys and Compounds
Volume480
Issue number2
DOIs
Publication statusPublished - Jul 8 2009

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Physical vapor deposition
Thermodynamic properties
Thermal diffusivity
Thermal conductivity
Coatings
Temperature
Microstructure

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "This work describes the experimental results of thermal diffusivities, thermal conductivities, and thermal resistivities of single coatings, double coatings, and sintered ceramics of 4 mol{\%} Y2O3-stabilized ZrO2 in a temperature range from room temperature to 1000 °C. The fractured surface of the coated samples revealed a columnar microstructure. The thermal conductivities and thermal diffusivities of both EB-PVD coatings and sintered ceramics decreased with increasing temperature. The thermal diffusivities and thermal conductivities of double-layer coatings were lower than those of single-layer coatings and sintered ceramics at a given temperature.",
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N2 - This work describes the experimental results of thermal diffusivities, thermal conductivities, and thermal resistivities of single coatings, double coatings, and sintered ceramics of 4 mol% Y2O3-stabilized ZrO2 in a temperature range from room temperature to 1000 °C. The fractured surface of the coated samples revealed a columnar microstructure. The thermal conductivities and thermal diffusivities of both EB-PVD coatings and sintered ceramics decreased with increasing temperature. The thermal diffusivities and thermal conductivities of double-layer coatings were lower than those of single-layer coatings and sintered ceramics at a given temperature.

AB - This work describes the experimental results of thermal diffusivities, thermal conductivities, and thermal resistivities of single coatings, double coatings, and sintered ceramics of 4 mol% Y2O3-stabilized ZrO2 in a temperature range from room temperature to 1000 °C. The fractured surface of the coated samples revealed a columnar microstructure. The thermal conductivities and thermal diffusivities of both EB-PVD coatings and sintered ceramics decreased with increasing temperature. The thermal diffusivities and thermal conductivities of double-layer coatings were lower than those of single-layer coatings and sintered ceramics at a given temperature.

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