Patent ID: 6933061
Filing Date: 2005-08-23
Classification: C23C,F01D,Y10T

Abstract:
1. A method for preparing a thermal barrier coating for an underlying metal substrate, the method comprising the steps of: 1. forming an inner layer overlaying the metal substrate, the inner layer comprising a ceramic thermal barrier coating material having a melting point of at least about 2000° F. 2. depositing on the inner layer a thermally glazable coating material having a melting point of at least about 2000° F.; and 3. thermally melting by laser beam the deposited thermally glazeable coating material so as to form a thermally laser glazed outer layer adjacent to and overlaying the inner layer and having exposed surface, the thermally glazed outer layer having a thickness up to about 0.4 mils and sufficient to at least partially protect the thermal barrier coating against environmental contaminants that become deposited on the exposed surface.