Abstract The effects of temperature on the corrosion of 316 stainless steel (316SS) in purified NaCl-MgCl2 eutectic salt under Ar were investigated through immersion test. The corrosion of samples accelerated and intergranular corrosion became obvious with increased temperature. The corrosion of 316SS was attributed to the selective dissolution of Cr, and corrosion had strong temperature dependence. The corrosion mechanism under the NaCl-MgCl2 eutectic salt was the combined effect of a dissolution mechanism with matrix metal element, which was attributed to the accelerating effect of surface chromium-dissolution and intergranular-diffusion rates with increased molten salt temperature.

中文翻译：

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316 不锈钢在纯化 NaCl-MgCl2 共晶盐中的高温耐腐蚀性能

摘要 通过浸泡试验研究了温度对316不锈钢(316SS)在纯NaCl-MgCl2共晶盐中Ar下腐蚀的影响。随着温度的升高，试样腐蚀加速，晶间腐蚀明显。316SS 的腐蚀归因于 Cr 的选择性溶解，腐蚀具有很强的温度依赖性。NaCl-MgCl2共晶盐下的腐蚀机制是与基体金属元素溶解机制的综合作用，这是由于熔盐温度升高导致表面铬溶解和晶间扩散速率的加速作用。