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...

Full description

Saved in:
Bibliographic Details
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
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2005.00700.x