期刊
CORROSION SCIENCE
卷 191, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2021.109698
关键词
Corrosion; Ceramics; Molten silicates; Thermodynamics; Thermal barrier coatings
资金
- National Natural Science Foundation of China [11890684]
- Foundation for Innovative Research Groups of Hunan Province [2020JJ1005]
By developing a mechanical model based on thermodynamic laws, this study successfully revealed the impact mechanism of molten silicate corrosion on thermal barrier coatings (TBCs), providing a new approach for studying corrosion failure in porous ceramics.
Corrosion failure leads to huge economic losses and potential safety issues in many fields. With a focus on corrosion failure in porous ceramics infiltrated by molten silicates, we developed a mechanical model based on thermodynamic laws that considers infiltration, diffusion, corrosion, and deformation. The model was used to analyze the failure mechanism of thermal barrier coatings (TBCs) corroded by molten silicates. The modeled corrosion process was consistent with experimental results. The delamination mechanism of TBCs due to corrosion was successfully revealed. The model has great potential in analyzing corrosion failure in porous ceramics.
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