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US 2004/0018299 A1Published application
Method of forming a diffusion coating on the surface of a workpiece
OwnerJames E. Arnold, Wayne C. Blakeinventors
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OwnerJames E. Arnold, Wayne C. Blakeinventors
Estimating the term…
A method of forming a diffusion coating on the surface of a workpiece, such as a turbine engine airfoil part. A coating is formed on at least selected portions of the workpiece substrate using an electroplating coating process. The coating material is capable of forming a diffusion bond with the workpiece substrate. The diffusion bond is a metallurgical bond between the workpiece and the coating that does not have an interface boundary. This diffusion bond creates a secure attachment between the coating and the substrate, much stronger than the mechanical bond that is originally formed between the coating and the substrate. A sintering heat treatment may be first performed to densify the coating material. After the sintering heat treatment, the hot isostatic pressing treatment is then performed to drive the coating material into the workpiece substrate. The hot isostatic pressing treatment results in the formation of the diffusion bond so that the metallurgical bond between the workpiece and the coating is formed.
1) A method of forming a diffusion coating on the surface of a workpiece, comprising the steps of:
7) A method of repairing a metal workpeice, comprising the steps of:
14) A method of repairing a turbine engine airfoil part, comprising the steps of:
Dependencies are inferred from the claim text.