METHOD FOR PREPARING JOINED BODY OF DISSIMILAR MATERIALS

摘要

The present invention relates to a method for producing a dissimilar material joint body, the method comprising the steps of: mixing a medium gas with a surface modifier including an organic compound having two or more functional groups selected from the group consisting of an ether group (-O-), a carbonyl group (>C=O), an ester group (-COO-), and a hydroxyl group (-OH), or having a carbon-carbon double bond or a triple bond with one or more functional groups selected from the group; performing pyrolysis of injecting a combustion gas into a mixed gas mixed with the surface modifier and the medium gas and heating the same at 400 to 1400°C, or photolysis of irradiating light of 10 to 5,000 mJ/cm^2 to a mixed gas; modifying a surface of a first solid material by spraying a byproduct from the pyrolysis or a byproduct from the photolysis onto a surface of the first solid material; and combining the surface-modified first solid material with a second solid material which is different from the first solid material. Accordingly, a dissimilar material joint body having excellent physical properties such as adhesion strength, air tightness, and tensile strength can be provided with simple production processes and economical feasibility.