Thermal Diffusivity Measurement of Oxide Scale Formed on Steel during Hot-rolling Process

)Thermal diffusivity and conductivity of oxide scales formed on steel plates are essential to control thecooling rate of the steel in the hot-rolling process. A flash method was applied to measure the thermaldiffusivity of oxide scales. Sample specimens were commercial hot-rolled plates on which about 25 μm-thick oxide scales were formed. The results of the flash measurement with the analysis for two-layeredsample provided an average thermal diffusivity value of 7.3 × 10