| 摘要 |
PURPOSE:To reduce the weight and to increase the mechanical strength by forming a mirror surface with a ceramic material mixed with a mirror material. CONSTITUTION:A ceramic material 1 is mixed with a substance capable of presenting a mirror surface or a compound thereof as a mirror material 2, and the mixture is molded and sintered at high temp. and pressure to obtain an opaque reinforced ceramic sheet 3. By well polishing the surface 4 of the sheet 3 to a smooth state, a mirror surface is formed. The mirror material 2 is a material whose surface becomes a mirror surface when the surface of the molded body is polished to a smooth state, and a metal such as Al or Ag, a compound thereof or a nonmetallic material such as silicon nitride is used as the mirror material 2. |
