Novel Method for Diffusion Bonding Superalloys and Aluminium Alloys (USA Patent 6,669,534 B2, European Patent Pending)

A.A. Shirzadi; E.R. Wallach

doi:10.4028/www.scientific.net/MSF.502.431

Paper Titles

Effect of Grain Size on Reaction between Pb-Free Solder and Plated Iron
p.405

Interfacial Reaction between Sn-Ag Based Solders and Au/Ni Alloy Platings
p.411

The Effects of Thickness and Underlayer on Both Grain Growth and Internal Stresses in Cu Thin Films
p.417

Production of Diamond Tools by Brazing
p.425

Novel Method for Diffusion Bonding Superalloys and Aluminium Alloys (USA Patent 6,669,534 B2, European Patent Pending)
p.431

Microstructure and Mechanical Properties of Hyper-Interfacial Bonded Joints of Ultra-Fine Grained High Strength Steels
p.437

Joining of Tungsten-Copper Using Pulse Electric Current Sintering Method
p.443

Interface Behavior in Liquid Phase Impact Diffusion Welding of Aluminum Matrix Composite
p.449

Estimation of Mechanical Properties of Al/Cu Compound Layer Formed by Impact Welding
p.455

HomeMaterials Science ForumMaterials Science Forum Vol. 502Novel Method for Diffusion Bonding Superalloys and...

Novel Method for Diffusion Bonding Superalloys and Aluminium Alloys (USA Patent 6,669,534 B2, European Patent Pending)

Abstract:

A novel method for diffusion bonding metallic alloys with stable surface oxide films (e.g. nickel and cobalt base superalloys and aluminium alloys) has been developed. The stable oxides on the faying surfaces of these alloys are replaced, prior to the bonding process, with a very thin metallic layer and/or less stable oxides, using a proprietary non-chemical oxide removal method based on the use of gallium. This new method is very rapid and neither requires the use of any sophisticated equipment nor is a costly process. Bonding is then readily achieved by either solid-state or transient-liquid-phase (TLP) diffusion bonding. Using this method, bonds in nickelbase and cobalt-base superalloys with “virtually invisible” bond interfaces and bonds in aluminium alloys with strengths as high as those of the parent alloys can be produced.