Abstract Stainless steel 316, duplex steel 2205 and carbon steel 1008 were examined for compatibility with the eutectic mixture of NaCl + Na2SO4 at 700 °C in air for thermal energy storage. Electrochemical measurements combined with advanced microscopy techniques were employed. Results confirmed oxidation to be the primary attack to all metals. Ferritic alloy 1008 was found the most vulnerable alloy with severe oxidative attack. Alloys 316 and 2205 showed close performance while grain boundary oxidative and sulfur attack threatened these materials. Alloy 2205 showed chromium depletion followed by selective oxidation of ferrite in the presence of a semi-protective film on the surface.

中文翻译：

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钢合金在 700 °C 熔融 NaCl + Na 2 SO 4 中的腐蚀，用于热能储存

摘要 研究了不锈钢 316、双相钢 2205 和碳钢 1008 与 NaCl + Na2SO4 共晶混合物在 700 °C 空气中用于热能储存的相容性。电化学测量结合先进的显微技术被采用。结果证实氧化是对所有金属的主要攻击。铁素体合金 1008 被发现是最易受到严重氧化侵蚀的合金。合金 316 和 2205 表现出接近的性能，而晶界氧化和硫侵蚀威胁到这些材料。合金 2205 显示出铬耗尽，然后在表面上存在半保护膜的情况下选择性氧化铁氧体。