Structural-Phase Change of Multilayer Ceramics Zr-Y-O/Si-Al-N under High Temperature

Round 1

Reviewer 1 Report

The paper describes the synthesis and the characterization of a ceramic multilayer to be used for protecting components operating at high temperature in gas turbine engines. The subject is very interesting and well worth of investigation. The work is well organized, the investigation methods are adequate to the purpose and the results are clearly reported. The conclusions are well supported by the experimental evidence and the results appear original. In conclusion, in my opinion, the paper can be accepted for publication in the present form.

Author Response

Dear Reviewer, thank you for appreciating my work. Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

 

The authors present a study of a multilayer ceramic Zr-Y-O/Si-Al-N to investigate the structural and phase state modifications induced by a high temperature thermal treatment. They employ TEM and XRD techniques to delineate the structural modifications and the grain topology in the Zr-Y-O layer. Based on the experimental data they have obtained information about the grain size and its distribution in the coating and the stresses developed, which affect the martensitic phase transition. They also examined the stability of the coating under a thermal treatment. The presented results are useful for the relative applications, though in my opinion they could get more analytic information from the employed techniques. I suggest that the paper can be accepted for publication though it misses the opportunity to be an extended analytic study of the system.

needs editing

Author Response

Dear Reviewer, I tried to improve the article, took into account your comments.

"Please see the attachment.

Author Response File: Author Response.docx