Recent Developments in 3D Printing of Rare-Earth-Free Permanent Magnets
Round 1
Reviewer 1 Report
I have reviewed the manuscript titled "Recent Developments in 3D Printing of Rare-Earth-Free Permanent Magnets". I recommend that the authors revise the abstract of the review for coherence and clarity. While the AM/3DP content of the review is brief, it could be that the it is not fully developed for manufacturing magnets. Notwithstanding, expert opinion on the subject under discussion is required for scope and relevance of the current paper.
Author Response
Author’s response to comment: The abstract is revised for the coherence by stating that “The published articles are categorized based on material types and 3D printing techniques used.” before highlighting each significant development. The implementation is clarified by rewriting the last two sentences of the abstract.
Reviewer 2 Report
The manuscript entitled “Recent Developments in 3D Printing of Rare-Earth-Free Permanent Magnets” by C. Sirisathitkul & Y. Sirisathitkul reviews the application of additive manufacturing techniques to the production of near-net shape magnets with a predefined geometry. Additive manufacturing of magnetic alloys and magnetic ceramics was revised; moreover, computer simulations of magnetic field of these 3D printed magnets are introduced. Finally, the potential application of AM techniques in producing magnets and the main challenges to solve are also introduced
The results are in the scope of Inventions journal. These can be useful, but I find some points to be addressed:
First, I would like to congratulate authors for this nice work. It is well-written and quite comprehensive, and has the potential to be well-cited. It deals with a relevant topic with potential industrial applications. However, after reading the paper I have some comments:
- The review focuses a lot on the materials, but not on the manufacturing techniques. It would be helpful for the potential reader if authors address the following points: (a) a short introduction of the fabrication AM techniques (or at least, providing appropriated references; it would be better if authors explains shortly the relevant AM techniques, on the contrary, please provide appropriated references for techniques listed in lines in 70-71), (b) it would be helpful if authors discuss shortly the main advantages/disadvantages of each manufacturing technique from to point of view of producing permanent magnets (adding a table with advantages/disadvantages/manufacturing costs/accuracy/fabrication volume… would be very illustrative), (3) it would be interesting if authors provide more details on the fabrication parameters used for producing magnetic alloys/magnetic ceramics relevant to each manufacturing technique (in the current manuscript, we can deduce, for example, that SLM can be used to produce magnetic alloys, but, for example, the range of laser powers, scanning speeds,… used for the production of these materials is absent; adding for example a table with materials, manufacturing technique and values of main processing parameters would be very helpful)
- (Line 250) Please, replace “successfully produced alnico” with “successfully produced alnico magnets”
Author Response
Comment by the reviewer: The manuscript entitled “Recent Developments in 3D Printing of Rare-Earth-Free Permanent Magnets” by C. Sirisathitkul & Y. Sirisathitkul reviews the application of additive manufacturing techniques to the production of near-net shape magnets with a predefined geometry. Additive manufacturing of magnetic alloys and magnetic ceramics was revised; moreover, computer simulations of magnetic field of these 3D printed magnets are introduced. Finally, the potential application of AM techniques in producing magnets and the main challenges to solve are also introduced.
The results are in the scope of Inventions journal. These can be useful, but I find some points to be addressed:
First, I would like to congratulate authors for this nice work. It is well-written and quite comprehensive, and has the potential to be well-cited. It deals with a relevant topic with potential industrial applications.
Author’s response to comment: The authors are grateful for the reviewer’s encouragement and have answered the questions and responded to the comments to improve the manuscript.
Comment by the reviewer: However, after reading the paper I have some comments:
The review focuses a lot on the materials, but not on the manufacturing techniques. It would be helpful for the potential reader if authors address the following points: (a) a short introduction of the fabrication AM techniques (or at least, providing appropriated references; it would be better if authors explains shortly the relevant AM techniques, on the contrary, please provide appropriated references for techniques listed in lines in 70-71),
Author’s response to comment: The authors are thankful for this suggestion. The manuscript is restructured by adding a section on additive manufacturing relevant to all magnetic materials. In this new section 2, all different techniques are listed in a new Table 1 to show their working principles and varieties in methods. Review articles covering different techniques are cited as requested. To avoid too many sections, the computer simulation and application of rare-earth-free magnets are merged into the new section 5.
Comment by the reviewer: (b) it would be helpful if authors discuss shortly the main advantages/disadvantages of each manufacturing technique from to point of view of producing permanent magnets (adding a table with advantages/disadvantages/manufacturing costs/accuracy/fabrication volume… would be very illustrative),
Author’s response to comment: The advantages and disadvantages of additive manufacturing techniques are compared in the new Table 1. Sentences are added throughout sections 3 and 4 to enhance the discussion on the merit of each work.
Comment by the reviewer: (c) it would be interesting if authors provide more details on the fabrication parameters used for producing magnetic alloys/magnetic ceramics relevant to each manufacturing technique (in the current manuscript, we can deduce, for example, that SLM can be used to produce magnetic alloys, but, for example, the range of laser powers, scanning speeds,… used for the production of these materials is absent; adding for example a table with materials, manufacturing technique and values of main processing parameters would be very helpful)
Author’s response to comment: Following the suggestion, details on the fabrication parameters used for producing magnetic alloys and magnetic ceramics are added in sections 3 and 4, respectively. In additions, the extrusion temperatures and printing speed are added in Tables 2 and 3, respectively.
Comment by the reviewer: (Line 250) Please, replace “successfully produced alnico” with “successfully produced alnico magnets”
Author’s response to comment: The sentence is modified following the suggestion.
