研究了Fe-15Ce合金及纯Fe、纯Ce在600和700℃下H 2-H2S-CO2中的腐蚀行为.Fe-15Ce合金的腐蚀速度比纯Fe慢但比纯Ce快得多.腐蚀后合 金表面形成多层的腐蚀产物膜，最外层是基体金属的硫化物（FeS），中间层为两种金属化 合物组成的混合区，最内层为Ce在O和S作用下的内腐蚀区.合金中15 mass%的Ce不足以阻止 基体金属的硫化，这主要与Ce在Fe中有限的溶解度及合金中存在富Ce相有关.
The oxidizing-sulfidizing corrosion of an Fe-15 wt%C e alloy and of the two pure metals has been studied at 600℃ and 700℃.The scale formed on Fe-15Ce shows a multilayered structure,including an outermost layer of base metal sulfide (FeS),an intermediate complex layer composed of a mixture of compounds of the two metals and finally an innermost region of internal attack of Ce by both oxygen and sulfur.A cerium content of 15 wt% is insufficient to p revent the sulfidation of the base metal.These results as well as the scale micr ostructure are interpreted by taking into account the limited solubility of Ce i n Fe and the presence of Ce-rich intermetallic compounds in the alloy examined.
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