An oxidation mechanism map for tungsten

A tungsten oxidation mechanism map is developed to clarify literature confusion about the dominant kinetic regime and enable improved predictions in extreme environments. Thermogravimetry data systematically extracted from 14 papers range 600–1600 °C treated as three distinct regimes: parabolic oxidation, linear sublimation. constructed that shows metal recession thickness contours for each time-temperature space. The enables consideration of a fusion reactor accident combining loss coolant vacuum, which first wall could reach ∼1200 several weeks. Complete 2 mm sublimation predicted. Similar maps must be tolerant alloys if reliable are made their performance.