抄録
The oxide layer thickness was obtained from the change in the amount of reflection light on the surface of copper oxidized in air during isothermal heating. A maximum and a minimum were observed in the amount of reflection light on the copper surface oxidized during isothermal heating at 200°C.
The thickness of the oxide layer was calculated from equations obtained by Macsman using the optical constants of Cu2O. The thickness thus obtained was in good agreement with that by weight measurements.
