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Novel Deposition of Columnar Y3Al5O12 Coatings by Electrostatic Spray-Assisted Vapor Deposition

A novel and cost‐effective electrostatic spray‐assisted vapor deposition (ESAVD) was used to deposit Y3Al5O12 (YAG) coatings. Polycrystalline single‐phase Y3Al5O12 coatings were synthesized using the ESAVD method in an open atmosphere at 650°C, and then annealed at 700°–900°C for 1 h. The ESAVD proc...

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Published in:	Journal of the American Ceramic Society 2006-01, Vol.89 (1), p.385-387
Main Authors:	Wu, Yiquan, Du, Jing, Choy, Kwang-Leong
Format:	Article
Language:	English
Subjects:	Aerosols Annealing Ceramics Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Methods of deposition of films and coatings film growth and epitaxy Microstructure Physics Spray coating techniques Thin film coatings
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container_title	Journal of the American Ceramic Society
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creator	Wu, Yiquan Du, Jing Choy, Kwang-Leong
description	A novel and cost‐effective electrostatic spray‐assisted vapor deposition (ESAVD) was used to deposit Y3Al5O12 (YAG) coatings. Polycrystalline single‐phase Y3Al5O12 coatings were synthesized using the ESAVD method in an open atmosphere at 650°C, and then annealed at 700°–900°C for 1 h. The ESAVD process involves the decomposition and chemical reactions of charged aerosol in vapor phase. The low‐temperature coating deposition characteristics of the ESAVD process using a suitable sol precursor decreases the reaction and crystallization temperatures for forming Y3Al5O12 coatings. The microstructure of the Y3Al5O12 coating prepared using the ESAVD method is columnar and such strain‐resistance microstructure could be useful for thermal barrier coating applications.
doi_str_mv	10.1111/j.1551-2916.2005.00700.x
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subjects	Aerosols Annealing Ceramics Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Methods of deposition of films and coatings film growth and epitaxy Microstructure Physics Spray coating techniques Thin film coatings
title	Novel Deposition of Columnar Y3Al5O12 Coatings by Electrostatic Spray-Assisted Vapor Deposition
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