Preparation of crystalline ytterbium disilicate environmental barrier coatings using suspension plasma spray

Ho lim Ryu; Sung Min Lee; Yoon Soo Han; Kyun Choi; Gye Seok An; Sahn Nahm; Yoon Suk Oh

doi:10.1016/j.ceramint.2018.12.048

Preparation of crystalline ytterbium disilicate environmental barrier coatings using suspension plasma spray

Ho lim Ryu, Sung Min Lee, Yoon Soo Han, Kyun Choi, Gye Seok An, Sahn Nahm, Yoon Suk Oh

Department of Materials Science and Engineering

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

13 Citations (Scopus)

Abstract

In high-speed modern industries, high-temperature stability of materials is essential. A promising high-temperature material currently attracting attention is silicon carbide (SiC)-based ceramic matrix composites (CMC). However, a disadvantage of these materials is their reduced lifetime in an oxidizing atmosphere. To overcome this, environmental barrier coating can be employed. In this study, we aimed to fabricate an environmental barrier coating using suspension plasma spray with Yb₂Si₂O₇, which exhibits excellent oxidation resistance and a similar thermal expansion coefficient to SiC. To prepare the crystalline Yb₂Si₂O₇ coating layer, the gas concentration of the plasma spray was adjusted, and then the suspension manufacturing solvent was adjusted and sprayed. The prepared coating samples were analyzed by X-ray diffraction, scanning electron microscope, transmission electron microscopes, and energy dispersive X-ray spectroscopy to determine phase and microstructure changes. Highly crystalline ytterbium disilicate was observed at low plasma enthalpy with no hydrogen and 20% addition of water.

Original language	English
Pages (from-to)	5801-5807
Number of pages	7
Journal	Ceramics International
Volume	45
Issue number	5
DOIs	https://doi.org/10.1016/j.ceramint.2018.12.048
Publication status	Published - 2019 Apr 1

Bibliographical note

Funding Information:
This work was supported by the research fund of the Strategic Core Material Technology Development Project ( # 10065691 ) of the Ministry of Trade, Industry and Energy , Rep. of Korea.

Publisher Copyright:
© 2018 Elsevier Ltd and Techna Group S.r.l.

Keywords

Ceramic matrix composite
Environmental barrier coatings
Silicon carbide
Suspension plasma spray

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2018.12.048

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title = "Preparation of crystalline ytterbium disilicate environmental barrier coatings using suspension plasma spray",

abstract = "In high-speed modern industries, high-temperature stability of materials is essential. A promising high-temperature material currently attracting attention is silicon carbide (SiC)-based ceramic matrix composites (CMC). However, a disadvantage of these materials is their reduced lifetime in an oxidizing atmosphere. To overcome this, environmental barrier coating can be employed. In this study, we aimed to fabricate an environmental barrier coating using suspension plasma spray with Yb2Si2O7, which exhibits excellent oxidation resistance and a similar thermal expansion coefficient to SiC. To prepare the crystalline Yb2Si2O7 coating layer, the gas concentration of the plasma spray was adjusted, and then the suspension manufacturing solvent was adjusted and sprayed. The prepared coating samples were analyzed by X-ray diffraction, scanning electron microscope, transmission electron microscopes, and energy dispersive X-ray spectroscopy to determine phase and microstructure changes. Highly crystalline ytterbium disilicate was observed at low plasma enthalpy with no hydrogen and 20% addition of water.",

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author = "Ryu, {Ho lim} and Lee, {Sung Min} and Han, {Yoon Soo} and Kyun Choi and An, {Gye Seok} and Sahn Nahm and Oh, {Yoon Suk}",

note = "Funding Information: This work was supported by the research fund of the Strategic Core Material Technology Development Project ( # 10065691 ) of the Ministry of Trade, Industry and Energy , Rep. of Korea. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

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AU - Ryu, Ho lim

AU - Lee, Sung Min

AU - Han, Yoon Soo

AU - Choi, Kyun

AU - An, Gye Seok

AU - Nahm, Sahn

AU - Oh, Yoon Suk

N1 - Funding Information: This work was supported by the research fund of the Strategic Core Material Technology Development Project ( # 10065691 ) of the Ministry of Trade, Industry and Energy , Rep. of Korea. Publisher Copyright: © 2018 Elsevier Ltd and Techna Group S.r.l.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - In high-speed modern industries, high-temperature stability of materials is essential. A promising high-temperature material currently attracting attention is silicon carbide (SiC)-based ceramic matrix composites (CMC). However, a disadvantage of these materials is their reduced lifetime in an oxidizing atmosphere. To overcome this, environmental barrier coating can be employed. In this study, we aimed to fabricate an environmental barrier coating using suspension plasma spray with Yb2Si2O7, which exhibits excellent oxidation resistance and a similar thermal expansion coefficient to SiC. To prepare the crystalline Yb2Si2O7 coating layer, the gas concentration of the plasma spray was adjusted, and then the suspension manufacturing solvent was adjusted and sprayed. The prepared coating samples were analyzed by X-ray diffraction, scanning electron microscope, transmission electron microscopes, and energy dispersive X-ray spectroscopy to determine phase and microstructure changes. Highly crystalline ytterbium disilicate was observed at low plasma enthalpy with no hydrogen and 20% addition of water.

AB - In high-speed modern industries, high-temperature stability of materials is essential. A promising high-temperature material currently attracting attention is silicon carbide (SiC)-based ceramic matrix composites (CMC). However, a disadvantage of these materials is their reduced lifetime in an oxidizing atmosphere. To overcome this, environmental barrier coating can be employed. In this study, we aimed to fabricate an environmental barrier coating using suspension plasma spray with Yb2Si2O7, which exhibits excellent oxidation resistance and a similar thermal expansion coefficient to SiC. To prepare the crystalline Yb2Si2O7 coating layer, the gas concentration of the plasma spray was adjusted, and then the suspension manufacturing solvent was adjusted and sprayed. The prepared coating samples were analyzed by X-ray diffraction, scanning electron microscope, transmission electron microscopes, and energy dispersive X-ray spectroscopy to determine phase and microstructure changes. Highly crystalline ytterbium disilicate was observed at low plasma enthalpy with no hydrogen and 20% addition of water.

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KW - Environmental barrier coatings

KW - Silicon carbide

KW - Suspension plasma spray

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Preparation of crystalline ytterbium disilicate environmental barrier coatings using suspension plasma spray

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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