|About this Abstract
||Materials Science & Technology 2020
||Coatings to Protect Materials from Extreme Environments
||Aerosol Deposition of Hexagonal and Cubic Boron Nitride
||Eric A. Patterson, Heonjune Ryou, Scooter D Johnson, Edward P. Gorzkowski
|On-Site Speaker (Planned)
||Eric A. Patterson
Aerosol deposition is a thick-film deposition process that can produce layers up to a hundred micrometers thick with densities approximately 95% of the bulk theoretical value. The AD process takes place entirely at ambient temperature and replicates the exact phase of the powder used during the process, but yielding an entirely new microstructure. The resulting film consists of a dense, nano-grained structure of crystallite created by the fracture of the incoming powder. Boron nitride materials are complex to synthesize in the bulk due to high melting temperatures. This unique process can produce thick films of these materials on low melting temperature substrates despite these high temperature limitations. Thus, cubic and hexagonal boron nitride are investigated for their potential for use as protective coatings through this process.