Influence of Grain Boundary Precipitates on Intergranular Corrosion Behavior of 7050 Al Alloys

Round 1

Reviewer 1 Report

Manuscript: coatings-1590758

Title: Influence of grain boundary precipitates on intergranular corrosion behavior of 7050 Al alloys

The content of the paper titled: "Influence of grain boundary precipitations on intergranular corrosion behavior of 7050 Al alloys" investigated the correlation between grain boundary precipitation and corrosion behavior using exfoliation methods and SEM, OP, TEM-EDS, and AFM techniques. The results obtained are very interesting but at present, cannot be published unless the authors make substantial edits to the content of the article, through the following recommendations:

1. Authors need to see and edit according to the form of Coatings magazine, do not use the form of materials magazine.
2. The results at present, have not clarified the nature of the problem to be studied, the authors need to analyze and clarify the following issues:

-It is necessary to elucidate the nature and mechanism of influence of factors on the boundary and the intergranular corrosion process.

-What causes the corrosion process to increase with the increase of Mg, Zn and decrease with the increase of Cu.

-It is necessary to compare the results obtained with other results to improve the accuracy of the results.

3. The content of the overview write is still too sketchy, the content of the abstract and conclusion has not highlighted the meaning of the article. The authors need to edit the content and add the results obtained by other methods such as theory, simulation to compare and clarify the content of the article to enhance the attractiveness and confirm the accuracy of the results obtained.
4. It is recommended that the authors check the entire manuscript and correct all English grammar errors or use a professional English editing service.

Wish the author team success, with this useful work.

 

 

Comments for author File: Comments.doc

Author Response

Thank you for your useful comments and giving precious suggestion. We have replied to your comments point by point.Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

Comments to authors :

Reviewer: General Comments: The manuscript describes influence of grain boundary precipitates on intergranular corrosion behavior of 7050 Al alloys.

I think this paper is acceptable after some revisions.

The listed modifications are proposed before reconsideration:

1. Define all acronyms and provide the full name of techniques in the abstract part. For example SEM, OP, TEM-EDS, and AFM.
2. The abstract did not include the aim of the research and did not include any results.
3. How does this work differ from the previously reported several classes of this topic ??? Novelty of the study should be further highlighted.
4. Why do authors select 7050 Al alloys and corrosive medium as experimental systems??
5. Did you compare the results of this study with your recently published ones?

 

Recommendation: Publish after minor revisions. Summing up, I do advise publication of this work in this form, the paper requires minor revisions before it can be published Coatings (MDPI).

Author Response

Thank you for your useful comments and giving precious suggestion. We have replied to your comments point by point.Please see the attachment.

Author Response File: Author Response.pdf