公开(公告)号：US20180209045A1

公开(公告)日：2018-07-26

申请号：US15622530

申请日：2017-06-14

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Dheepa SRINIVASAN ,  Raghupatruni PRASAD ,  Sophie Betty Claire DUVAL ,  Piero-Daniele GRASSO ,  Atifa ARIF

IPC: C23C16/56

CPC classification number: C23C16/56 ,  C23C10/18 ,  C23C10/20 ,  C23C10/26 ,  C23C10/60 ,  C23C28/321

Abstract: A process for forming an aluminide coating system on a substrate. The process includes preparing a slurry including, by weight, about 35 to about 65% of an aluminum donor powder, the aluminum donor material comprising at least 35% aluminum, about 1 to about 25% of a binder, and balance essentially carrier. The slurry is applied to the substrate. The substrate is a nickel or cobalt based superalloy being essentially free of aluminum. The slurry is heated to form an aluminide diffusion coating including an additive aluminide layer and an interdiffusion zone disposed between the substrate and the additive aluminide layer.