Highly Oriented Ceramic Coatings by Chemical Vapor Deposition under Intense Laser Field

2015 Fiscal Year Final Research Report

• Project/Area Number: 25709069
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Material processing/Microstructural control engineering
• Research Institution: Tohoku University
• Principal Investigator: ITO Akihiko 東北大学, 金属材料研究所, 助教 (20451635)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 化学気相析出 / レーザー工学 / セラミックス / コーティング / 配向制御

Outline of Final Research Achievements

The chemical vapor deposition process under intense laser field can produce ceramic coatings with a significant deposition rate and oriented growth. I have demonstrated phase and orientation control of α-Al2O3 coatings by changing deposition conditions, and nearly perfect c-axis-orientation of α-Al2O3 coatings has been reported.
The developed method was used for the preparation of various structural and functional ceramic coatings: feather-like structure in b-axis-oriented β-Al2TiO5 coatings, superstructure formation in c-axis-oriented oriented Ba β-alumina layers, high-speed epitaxial growth of b-axis-oriented BaTi2O5 ferroelectric coatings, c-axis-oriented YBa2Cu3O7－δ superconducting coatings, and 2H-polytype formation in a-axis-oriented SiC coatings. Relationships among orientation, microstructure and properties were discussed through an electron microscopy.

Free Research Field

無機材料合成