Effect of Al2O3 addition on the microstructure and oxidation behavior of SiC coating prepared by pack cementation on C/C composites

The study addresses the effects of Al2O3 on the SiC coating fabricated by pack cementation by preparing coatings with different Al2O3 contents on C/C composite. After the in-depth analysis of various characterization results, including XRD, SEM, EDS, and XPS, the competition brought by Al2O3 between enhancing coatings qualities and affecting oxidation behaviors was revealed. One insight into the microstructure of as-prepared coatings is that...