IN-SITU STUDY OF HIGH-TEMPERATURE CORROSION KINETICS OF IRON USING A FAST X-RAY-DIFFRACTION METHOD

Temperature and time resolved X-ray diffraction was applied to studies of the high temperature oxidation of iron in air in isothermal measur ements between 700 and 920-degrees-C. With the measured series of diff raction patterns the formation of the oxide layers can be followed in situ. The observed diffraction peaks allow the identification of the o xides. The difference method together with microscopic determination o f the end thickness of the oxide layer yields the kinetic parameters f or the whole oxide layer as well as for the single oxides.