Spray and Fuse Co-base or Ni-base alloy on Inconel 718

[Frank]

How to improve adhesion before starting the fusing step?
Preheating, which temperature?
Selffluxing Bond layer?
mass flow oxygen and acetylene?

[Gordon]

Hi Frank

to the Surface Engineering Forum.

How to improve adhesion before starting the fusing step?
Preheating, which temperature?

May help if we knew more about your equipment /set-up and what specific problems you want to address.

Selffluxing Bond layer?

If you are talking about using a similar but softer/more ductile self-fluxing alloy as a base coat, then this can be good system for thicker coatings or where you need to reduce the thickness of a more troublesome top layer.

mass flow oxygen and acetylene?

Equipment/powder?