Production of metal and/or ceramic composite product

PURPOSE: To obtain a composite product of which plural ceramic parts are very strongly joined together or a composite product of which at least one metal part item and at least one ceramic part item are joined together. CONSTITUTION: A production method for a composite product comprises a method for applying nanocrystalline materials on the surfaces of parts to be joined and a method for joining them together while simultaneously heat-treating them through the nanocrystalline materials. COPYRIGHT: (C)1994,JPO