Abstract No.:	1090
Title:	Sealing up the holes by gas dynamic spraying
Authors:	Alexander Shkodkin / Obninsk Center for Powder Spraying, RUSSIA Timur Buzdygar / Obninsk Center for Powder Spraying, RUSSIA Alexander Kashirin/ Obninsk Center for Powder Spraying, RUSSIA Oleg Klyuev/ Obninsk Center for Powder Spraying, RUSSIA
Abstract:	High density and low porosity of gas dynamic sprayed coatings may provide gases and liquids impermeability. But jet deflection and stagnation in the narrow splits and reach-through holes prevent from sealing up the deep substrate defects by gas dynamic spray. The correct choice of powder blend makes the gas dynamic spray process applicable to the splits and holes sealing up. The approaches to the defects sealing up by gas dynamic spray and some applications are presented and discussed.

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