Diffusion bonding process for aluminum and aluminum alloys

摘要

A method of forming diffusion bonds between aluminum and aluminum alloy surfaces by coating the surfaces with molten AgNO3 and then decomposing the AgNO3 to form a thin uniform layer of silver on the surfaces before forming the diffusion bond. The AgNO3 coating and decomposition in treatment permanently breaks up the Al2O3 coatings on the aluminum or aluminum alloy surfaces, making diffusion bonding possible.