| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1469179 | Corrosion Science | 2013 | 6 Pages |
SiC/SiC–YAG–YSZ coatings were prepared by pack cementation, chemical vapor deposition and slurry painting on carbon/carbon (C/C) composites. The microstructures and oxidation behavior of coatings were investigated. The results show that the coatings displayed good oxidation and thermal shock resistance due to a dense glassy layer with silicates formed on the coating of SiC–YAG–YSZ. The weight gain rate of coated C/C composites was 1.77% after oxidation for 150 h at 1773 K. SiC in outer coating can promote the formation of oxygen diffusion barrier and lead to the optimum oxidation resistance for the coatings, compared with YSZ and YAG.
Graphical abstractSiC as the major phase in outer coating can promote the formation of oxygen diffusion barrier and lead to the optimum oxidation resistance for the coatings, compared with YSZ and YAG.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► SiC/SiC–YAG(Y3Al5O12)–YSZ(Y0.16Zr0.92O2.08) coatings were prepared on C/C composites. ► The coatings exhibit good oxidation and thermal shock resistance at 1773 K. ► SiC in outer layer can promote the formation of a dense glassy layer with silicates.
