METAL COATED WITH CERAMIC AND MANUFACTURING METHOD THEREOF

摘要

A metal having ceramic coated on a surface thereof is provided to coat pure SiC on any metal irrespective of its melting point and prevent generation of defects such as exfoliation due to a difference in thermal expansion coefficients, and a method for manufacturing the metal having ceramic coated on a surface thereof is provided. A method for manufacturing a metal having ceramic coated on a surface thereof comprises: a step(S11) of dissolving an SiC precursor into a solvent to prepare a coating solution; a step(S12) of coating the prepared coating solution on a surface of a buffer layer which is formed on a surface of a metallic material, and has a thermal expansion coefficient between thermal expansion coefficient of the metallic material and thermal expansion coefficient of SiC by a room temperature coating process; a step(S13) of drying the metallic material coated with the coating solution to form an SiC precursor coating layer on the surface of the metallic material; and a step(S14) of converting the SiC precursor coating layer into an SiC coating layer through heat treatment.