METHOD FOR JOINING ITM MATERIALS USING PARTIALLY OR FULLY TRANSIENT LIQUID PHASE

摘要

A method of forming a composite structure comprises: (1) providing a first and a second sintered bodies comprising a first and a second multicomponent metallic oxides having similar a first and a second crystal structures, which are a perovskite and a fluorite; (2) providing a joint material comprising at least one metal oxide, which (a) comprises (i) at least one metal of an identical Group of the IUPAC periodic table as at least one sintered body metal in one of the first multicomponent metallic oxide, (ii) a first row D-Block transition metal not contained in the first multicomponent metallic oxides and/or (iii) a lanthanide not contained in the first multicomponent metallic oxides; (b) is free of metals contained in the first multicomponent metallic oxides; (c) is free of cations of boron, silicon, germanium, tin, lead, arsenic, antimony, phosphorous, and tellurium; and (d) has a melting point below the sintering temperatures of said sintered bodies; and (3) heating the sintered bodies and the joint material to a joining temperature above the melting point and below the sintering temperatures.