Low temperature process for the formation of ceramic coatings

Details Low temperature process for the formation of ceramic coatings Low temperature process for the formation of ceramic coatings

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B05D 3/02 (2006.01) C04B 41/50 (2006.01) C04B 41/52 (2006.01) C04B 41/87 (2006.01) C04B 41/89 (2006.01) H01L 23/29 (2006.01)

Patent

CA 2007726

LOW TEMPERATURE PROCESS FOR THE FORMATION OF CERAMIC COATINGS Abstract A single or multilayer ceramic or ceramic-like coating process is provided which can be applied to heat sensitive substrates such as electronic devices. The process includes the steps of coating the substrate with a solution comprising a hydrogen silsesquioxane resin diluted in a solvent and then evaporating the solvent, thereby depositing a preceramic coating on the substrate. The preceramic coating is then ceramified to a silicon dioxide-containing ceramic by heating the preceramic coating to a temperature of between about 40 to about 400°C. in the presence of ozone which enhances the rate at which the ceramification proceeds and permits the ceramification of the coating to proceed at low temperatures. Additional layers of ceramic materials may be deposited over the initial layer and act as passivating and/or barrier protective layers.

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