**4. Conclusions**

In present work, modified Al powders (SiO2@Al) were prepared by the hydrolysis of tetraethyl orthosilicate (TEOS) under alkaline conditions. A new ceramic coating was prepared with the SiO2@Al as additives to prevent the carbon steel from oxidization at 1250 ◦C. The anti-oxidation performance and a probable protective mechanism of the coating were clarified.

Some results were obtained as follows:


**Author Contributions:** Conceptualization, B.Y. and L.W.; Formal analysis, B.Y., G.Z. and L.W.; Funding acquisition, S.Y.; Investigation, B.Y., X.Z., Y.D. and L.W.; Methodology, B.Y., G.F. and L.W.; Software, G.Z.; Supervision, Y.C., Y.D. and S.Y.; Validation, B.Y. and Y.T.; Writing–original draft, B.Y.; Writing–review & editing, B.Y., Y.C. and L.W.

**Funding:** This research was funded by the National Strategic Priority Research Program 2017 (No. YFC0703205).

**Conflicts of Interest:** The authors declare no conflict of interest.
