Method for improving cooling effect of gaseous coolant flow and its related product

Application Number: 00104969
Application Date: 2000.04.05
Publication Number: 1272593
Publication Date: 2000.11.08
Priority Information: 1999/4/5 US 09/285966
International: F02C7/18
Applicant(s) Name: General Electric Co.
Inventor(s) Name: T. F. Frick;R. P. Kambel
Patent Agency Code: 72001
Patent Agent: zheng jianhui
Abstract A method for improving the cooling effectiveness of a gaseous coolant stream which flows through at least one passage hole in a substrate to an exit site on a high-temperature surface of the substrate is disclosed. The method comprises disrupting the coolant stream at the exit site, so that the coolant stream contacts a greater area of the high-temperature surface. In some embodiments, the exit site is a crater. Moreover, the exit site may be formed within a coating applied over the substrate, e.g., a thermal barrier coating applied over a superalloy substrate. Related articles are also disclosed.