Thermal emission properties of Al2O3/Er3 Al5O12 eutectic ceramics

Narihito Nakagawa; Hideki Ohtsubo; Yoshiharu Waku; Hiroo Yugami

doi:10.1016/j.jeurceramsoc.2005.01.031

Thermal emission properties of Al₂O₃/Er₃ Al₅O₁₂ eutectic ceramics

Narihito Nakagawa, Hideki Ohtsubo, Yoshiharu Waku, Hiroo Yugami

ENG - Mechanical Systems Engineering

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

79 Citations (Scopus)

Abstract

The mechanical properties and thermal stability of the Al₂ O₃/Er₃Al₅O₁₂ (EAG) eutectic ceramics have been investigated at very high temperature. The emissive properties of this eutectic ceramics have also been measured and its possibilities of application to an emitter have been discussed. The present eutectic ceramic has excellent high-temperature strength characteristics, showing that tensile yielding stress is approximately 300 MPa at 1650 °C and superior thermal stability at 1700 °C in an air atmosphere. The present material shows strong selective emission bands at wavelength 1.5 μm due to Er³⁺ ion. The emission bands of this material are nearly coincident with the sensitive region of GaSb PV cell, therefore, the Al₂O₃/EAG eutectic ceramic can be regarded as one of the promising emitter materials in TPV systems.

Original language	English
Pages (from-to)	1285-1291
Number of pages	7
Journal	Journal of the European Ceramic Society
Volume	25
Issue number	8 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2005.01.031
Publication status	Published - 2005 Jan 1

Keywords

Mechanical properties
Thermophotovoltaic

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Access to Document

10.1016/j.jeurceramsoc.2005.01.031

Cite this

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title = "Thermal emission properties of Al2O3/Er3 Al5O12 eutectic ceramics",

abstract = "The mechanical properties and thermal stability of the Al2 O3/Er3Al5O12 (EAG) eutectic ceramics have been investigated at very high temperature. The emissive properties of this eutectic ceramics have also been measured and its possibilities of application to an emitter have been discussed. The present eutectic ceramic has excellent high-temperature strength characteristics, showing that tensile yielding stress is approximately 300 MPa at 1650 °C and superior thermal stability at 1700 °C in an air atmosphere. The present material shows strong selective emission bands at wavelength 1.5 μm due to Er3+ ion. The emission bands of this material are nearly coincident with the sensitive region of GaSb PV cell, therefore, the Al2O3/EAG eutectic ceramic can be regarded as one of the promising emitter materials in TPV systems.",

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AU - Nakagawa, Narihito

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AU - Waku, Yoshiharu

AU - Yugami, Hiroo

PY - 2005/1/1

Y1 - 2005/1/1

N2 - The mechanical properties and thermal stability of the Al2 O3/Er3Al5O12 (EAG) eutectic ceramics have been investigated at very high temperature. The emissive properties of this eutectic ceramics have also been measured and its possibilities of application to an emitter have been discussed. The present eutectic ceramic has excellent high-temperature strength characteristics, showing that tensile yielding stress is approximately 300 MPa at 1650 °C and superior thermal stability at 1700 °C in an air atmosphere. The present material shows strong selective emission bands at wavelength 1.5 μm due to Er3+ ion. The emission bands of this material are nearly coincident with the sensitive region of GaSb PV cell, therefore, the Al2O3/EAG eutectic ceramic can be regarded as one of the promising emitter materials in TPV systems.

AB - The mechanical properties and thermal stability of the Al2 O3/Er3Al5O12 (EAG) eutectic ceramics have been investigated at very high temperature. The emissive properties of this eutectic ceramics have also been measured and its possibilities of application to an emitter have been discussed. The present eutectic ceramic has excellent high-temperature strength characteristics, showing that tensile yielding stress is approximately 300 MPa at 1650 °C and superior thermal stability at 1700 °C in an air atmosphere. The present material shows strong selective emission bands at wavelength 1.5 μm due to Er3+ ion. The emission bands of this material are nearly coincident with the sensitive region of GaSb PV cell, therefore, the Al2O3/EAG eutectic ceramic can be regarded as one of the promising emitter materials in TPV systems.

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KW - Thermophotovoltaic

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