Abstract Corrosion tests of Ni-30Cr alloy were performed in three simplified soda-silicate and borosilicate melts in order to follow the evolution of the protective chromia layer. A complete identification of the corrosion mechanisms enables the establishment of a kinetic model based on the oxide formation and dissolution rates. The dissolution kinetics is strongly dependent on the chromium solubility limit and diffusivity, which are related to the basicity and viscosity of the melts. This new modelling of the oxide growth is in good agreement with the experimental results.

中文翻译：

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硅酸盐熔体中 Ni-30Cr 合金上 Cr2O3 生长的动力学模型

摘要 为了跟踪氧化铬保护层的演变，在三种简化的钠硅酸盐和硼硅酸盐熔体中对 Ni-30Cr 合金进行了腐蚀试验。对腐蚀机制的完整识别有助于建立基于氧化物形成和溶解速率的动力学模型。溶解动力学强烈依赖于铬的溶解极限和扩散率，这与熔体的碱度和粘度有关。这种氧化物生长的新模型与实验结果非常吻合。