Patent ID: 6598781
Filing Date: 2003-07-29
Classification: B22F,B23K,B32B,C21D,C23C,F01D,F05C,F05D,F23R,F28F,Y10T

Abstract:
A method of providing turbulation on a surface of a superalloy substrate, comprising the steps of:applying a layer on a surface of the superalloy substrate, the layer comprising braze alloy and turbulation material, wherein said turbulation material has an average particle size in the range from about 180 microns to about 4000 microns, and wherein said layer comprises a free-standing brazing sheet, said brazing sheet selected from the group consisting of a. a green braze tape comprising a braze alloy and a binder: and b. a braze metal foil, wherein said turbulation material is provided on a surface of said braze metal foil; and fusing the layer on the surface of the superalloy substrate, whereby the braze alloy melts and bonds the turbulation material to the superalloy substrate.