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THEORETICAL ASPECT OF LIFE PREDICTION OF HIGH-TEMPERATURE PROTECTIVE COATINGS

The oxidation kinetics theory and the statistical theory of oxide scale spallation for cyclic high-temperature oxidation were described.The oxidation kinetics constant k p of parabolic oxidation law,the crack density exponent m,and the spallation constant q were calculated.The life prediction of high-temperature protective coatings was discussed based on the model of cyclic high-temperature oxidation kinetics.