混合气氛中的硫化腐蚀鲜①
(1.清华大学材料科学与工程系，北京100084；
2.北京科技大学表面科学与腐蚀工程系，北京100083)
摘 要: 含钒Fe-Ni-Cr合金在0.4%H2S-H2-7%CO2和1%H2S-H2-7%CO2气氛中于600℃下的腐蚀产物包括外层疏松多孔、呈粉状的(Ni，Fe)S，其下致密的FeCr2S4和里层的Cr3S4。1%H2S气体中腐蚀，FeCr2S4的上部还有(Fe， Ni) S块的形成。钒与镍富集于FeCr2S4/Cr3S4交界处。
关键字: 硫化 Fe-Ni-Cr合金 腐蚀
IN GAS MIXTURES OF H2S-H2-CO2
（1．Department of Materials Science and Engineering,
Tsinghua University, Beijing100084
2.Department of Surface Science and Corrosion Engineering,
University of Science and Technology Beijing, Beijing100083）
Abstract:The scales of Fe-Ni-Cr alloy containing V formed in the gas mixtures of 1%H2S-H2-7%CO2and 0.4% H2S-H2-7%CO2consisted of the extremely porous outer (Ni, Fe)S layer, the middle FeCr2S4layer and the inner Cr3S4 layer. Patches of (Fe, Ni)S also formed at the outer area of the middle FeCr2S4layer in higher concentration H2S gas. V and Ni enriched at the boundary between FeCr2S4and Cr3S4.
Key words: sulfidation Fe-Ni-Cr alloy corrosion
