Abstract
Studies were made of the decarburization of a steel in wet hydrogen and the effect of carbon content in steel on ceramic coating.
Steel rods were decarburized in wet hydrogen.The decarburization process was found to be controlled by a diffusion mechanism where D0=1.8cm2 per second and Q=37.8 Kcal per mole, when the values were calibrated from the value of volatile Fe in wet hydrogen.
Steel rods of various carbon contents were then coated with coating material and baked in air.The adhesiveness of baked film was calculated by the measurement of the torque which was needed to peel off the film from the surface of steel rod. The adhesiveness of the baked film was remarkably influenced by the carbon content in steel and the baking temperature.
