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The sulfidation behavior of Fe20Cr and Fe20Cr0.7Y alloys in H2–H2S atmospheres at 700 and 800°C was determined by thermogravimetry. Isothermal measurements were carried out and the sulfidation kinetics were evaluated from the mass gain vs. time curves. The reaction products were examined in a scanning electron microscope and the compositions of micro-regions were determined using energy dispersive...
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