초록 ▼

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 cool

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.

대표청구항 ▼

1. 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, said passage hole being inclined at an angle in the range of about 10 degrees to about 60 degre

1. 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, said passage hole being inclined at an angle in the range of about 10 degrees to about 60 degrees, relative to the surface of the substrate, and said exit site having a depth which is less than the length of the passage hole,wherein said method comprises disrupting the coolant stream at the exit site, so that the coolant stream contacts a greater area of the high-temperature surface.