Review Reports

Round 1

Reviewer 1 Report

This is an interesting and original article concerning modified Pt-diffused bond coats with single phase (γ or γ’) made by applying selective etching on CMSX-4 single crystal superalloys prior to the electroplating of Pt. The introduction is well written, the prices of the TBC materials, especially platinum, emphasize the practical purpose of the research. The authors very clearly determined the aim of the study. Chapter 2, Materials and Methods, provides detailed information and a description of the procedures used. The paper is well written - clear motivation, explanations, references are correct. Figures are very good quality. The invention of Pt-diffused single γ’- phase implies great potential in terms of oxidation resistance and cost savings.

I recommend the paper for publication.

Author Response

Thank you so much for your encouraging comments.

Reviewer 2 Report

The authors did a very thorough experimental work and analyses for this research and draw a solid conclusion.

Reviewer 3 Report

-Explanation of γ,γ' coat.

-Electrolyte etching?

-Diffusion treatment; time?

-Profiles of figure 3; detailed analysis; mathematical process.

- Analysis of figure 9.

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Round 2

Reviewer 3 Report

After the corrections you made, the article can be published.