公开(公告)号：US20180073123A1

公开(公告)日：2018-03-15

申请号：US15264313

申请日：2016-09-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dechao LIN ,  David Vincent BUCCI ,  Shan LIU ,  Jon SCHAEFFER ,  John ADAMS ,  Ron HENDRIX

IPC: C23C10/18 ,  C23C30/00 ,  C23C28/00 ,  C23C10/02 ,  C23C10/60 ,  F01D5/28 ,  F01D9/04 ,  F01D11/08 ,  F01D25/00

CPC classification number: C23C10/18 ,  C23C10/02 ,  C23C10/20 ,  C23C10/60 ,  C23C28/321 ,  C23C30/00 ,  F01D5/288 ,  F01D9/041 ,  F01D11/08 ,  F01D25/005 ,  F05D2220/32 ,  F05D2230/90 ,  F05D2300/611

Abstract: A process for forming a diffusion coating on a substrate is disclosed, including preparing a slurry including a donor metal powder, an activator powder, and a binder, and applying the slurry to the substrate. The slurry is dried on the substrate, forming a slurry layer on the substrate. A covering composition is applied over the slurry layer, and the covering composition is dried, forming at least one covering layer enclosing the slurry layer against the substrate. The slurry layer and the at least one covering layer are heated to form the diffusion coating on the substrate, the diffusion coating including an additive layer and an interdiffusion zone disposed between the substrate and the additive layer.