초록 ▼

A method of joining superalloy substrates together comprises diffusion bonding the superalloy substrates by depositing an activator directly on the surface of the joint to be bonded and thereafter subjecting the joint to heat and pressure. The heat and pressure causes the surface of the superalloy,

A method of joining superalloy substrates together comprises diffusion bonding the superalloy substrates by depositing an activator directly on the surface of the joint to be bonded and thereafter subjecting the joint to heat and pressure. The heat and pressure causes the surface of the superalloy, in the presence of the activator, to diffusion bond without the use of a brazing alloy. By eliminating the brazing alloy, a high strength, high temperature bond is achieved, yet there is no molten brazing alloy to be drawn through capillary action into any fine features surrounding the joint being bonded, and there is no residue left at the interface that would diminish the mechanical properties of the joint.

대표청구항 ▼

1. A method of bonding a first article formed of a superalloy material to a second article also formed of a superalloy material comprising:cleaning a surface of said first article; cleaning a surface of said second article; applying an activator material to said surface of said first article, said a

1. A method of bonding a first article formed of a superalloy material to a second article also formed of a superalloy material comprising:cleaning a surface of said first article; cleaning a surface of said second article; applying an activator material to said surface of said first article, said activator material comprising a melting point depressant mixed with a carrier material that is substantially free of Nickel, Cobalt and Iron; bringing said surface of said first article in contact with said surface of said second article at an interface; applying a load at said interface to force said surface of said first article and said surface of said second article together; and heating said interface in an inert atmosphere.