| 摘要 |
PURPOSE:To manufacture a ceramic-coated copper foil excellent in adhesive strength and free from pores, by allowing fine copper grains to adhere to the rough-surface side of an electrolytic copper foil by means of electrodepoposition to form an irregular surface and by successively forming a ceramic thermally sprayed layer and a ceramic coating layer on the above irregular surface. CONSTITUTION:A fine-grain layer 2 of copper or copper oxide or mixture thereof is allowed to adhere to the rough-surface side of an electrolytic copper foil 1 by means of electrodeposition to form a fine irregular surface. Then, ceramic (alumina is preferred) is thermally sprayed on the above irregular surface of the fine-grain layer 2 so as to be formed into a ceramic thermally sprayed layer 3. Further, a ceramic coating (alumina and silica are preferred) is applied to this ceramic thermally sprayed layer 3 and then dried and solidified at room temp. or at about 100-200 deg.C so as to be formed into a ceramic coating layer 4. In this way, the ceramic-coated copper foil excellent in adhesive strength between the ceramic thermally sprayed layer 3 and the copper foil 1 and free from pores can be obtained. |
