Method of manufacturing ceramic/metal composite structure

A method of manufacturing a ceramic/metal composite structure, the method comprising the steps of:

• providing a ceramic substrate;
• forming a metal interface layer on the ceramic substrate;
• placing a copper sheet on the metal interface layer, wherein multiple stages of pre-oxidizing processes are performed on the copper sheet before the copper sheet is placed on the metal interface layer, and the multiple stages of pre-oxidizing processes are performed at different temperatures and in different atmospheres with different oxygen partial pressures;
• and
• heating the ceramic substrate, the metal interface layer and the copper sheet so that the metal interface layer forms strong bonds with the ceramic substrate and the copper sheet, wherein the metal interface layer provides a wetting effect for the copper sheet to the ceramic substrate at a high temperature so that the copper sheet wets a surface of the aluminum oxide.