Refractory materials, as the crucial foundational materials in high-temperature industrial processes such as metallurgy and construction, are inevitably subjected to corrosion and penetration from high-temperature media during their service. Traditionally, observing the in-situ degradation process of refractory materials in complex high-temperature environments has presented challenges. Post-corrosion analysis are commonly employed to assess the slag resistance of refractory materials and understand the corrosion mechanisms. However, these methods often lack information on the process under the conditions of thermal-chemical-mechanical coupling, leading to potential biases in the analysis results.