Comparison of Metal Dusting Behavior of Several Alloys

Metal dusting behaviors of several alloys with different chromium contents and other elements were investigated in a given gaseous environment. The samples of the alloys were exposed at 650 ℃ for 650 h, and were periodically removed to examine coke protrusions and pits formed on the sample surfaces by SEM and determine metal wastage. The results were interpreted in terms of the compositional variations of the employed alloys.