Absolute Rates of Coke Formation: A Relative Measure for the Assessment of the Chemical Behavior of High-Temperature Steels of Different Sources

Abstract

A standardized artificial aging procedure for steel specimen is reported. It is shown that the procedure is suitable to raise the scarcely measurable absolute coking rates at the surface of fresh highly alloyed high-temperature steels during hydrocarbon pyrolyses to orders of magnitude that make the determination of reliable measures possible. The absolute coking rates are measured in 95% confidence intervals of < 20 μg cm-2 min-1.