JUNCTION PROCESS FOR A CERAMIC MATERIAL AND A METALLIC MATERIAL WITH THE INTERPOSITION OF A TRANSITION MATERIAL

摘要

The invention refers to a method useful for obtaining junctions having high qualities of mechanical resistance and capabilities of heat conduction between materials with different physical properties, and in particular ceramic/metal junctions or ceramic/metal composites in which the different thermal expansion coefficient entails remarkable stresses in the interface both during the junction process and their industrial application. The issues solved with the proposed method are the metal's difficulty of wetting the surfaces to be coupled and the general low mechanical resistance to tensile stress of ceramics or ceramic compounds. The first issue is solved with the application of a Titanium-base alloy that, by combining with the ceramic at a surface level enables metal to wet the surface. The second issue is solved by increasing the specific surface of the ceramic or compound, machining it through long-pitch multi-start thread.