In this work, alumina coatings are produced by atmospheric plasma spraying using dry-ice blasting to prepare substrate surfaces. Feedstock powder and coating microstructure are examined and dielectric strength and ac-dc breakdown voltages are measured. The results show that dry-ice blasting improves the dielectric properties of alumina coatings produced by atmospheric plasma spraying.

alumina coatings, atmospheric plasma spraying, breakdown voltage, dielectric strength, dry-ice blasting, microstructure
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2014
DVS Media GmbH
Topics
Microstructure Alumina ceramics Plasma spray coating Blast cleaning Dielectric properties
Issue Section:
Poster Session: Ceramic Coatings
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