Effects of Nanosecond-Pulsed Laser Milling on the Surface Properties of Al2O3 Ceramics
, Zhao Meng 2, Yizhi Liu 4 and Xiankai Meng 2,*Round 1
Reviewer 1 Report
This work deals with the investigation of surface of Al2O3 Ceramics treated by pulshed laser millingand it is very interesting work in related field for potential readers. However, there is not clear something for publication and I recommend the author should improve the manuscript.
1. In experimantal, I recommned you would show more detailed information of Laser condition such wavelength and width.
2. How could you get Al2O3 powder ? You should eplain powder fabrication. If possible, I recommned that you would measure your samples by XRD.
3. After laeser milling wih high eneryg, is there the structural changes in A2O3? You should check surface of poweder that treated directly laser.
4. in the conclusions, I recommned you would sumarrie your work shortly.
5. Finally, for investiagting effect of surface of Al2O3 Ceramics by laser milling, you should measure your samples (XRD, BET, TEM etc).
Author Response
Please see attached for details of comments.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Refereree report on manuscript “Effects of Nanosecond-Pulsed Laser Milling on the Surface Properties of Al2O3 Ceramics”
This version does not look worthy and cannot be recommended for publication in this form and at least needs major revision.
1. Line 4-5. Please check the authors list. The authors as “Firstname Lastname 1 , Firstname Lastname 2 and Firstname Lastname 2” are probably not correct.
2. Line 27. Note that Al2O3 is still one of the most important materials for fusion technology: Popov, A. I., et al (2018). Comparison of the F-type center thermal annealing in heavy-ion and neutron irradiated Al2O3 single crystals. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 433, 93-97.
3. Line 77. What are the optical properties of these ceramics? Where are the optical absorption edges observed? How defective are they in terms of point defects? The effects observed under laser excitation are always defect-dependent. Uklein, A. V et al (2018). Nonlinear optical response of bulk ZnO crystals with different content of intrinsic defects. Optical Materials, 84, 738-747.
4. Could you evaluate the efficiency of the laser-induced desorption processes in your study? See for details: Dreyfus, R. W., Kelly, R., & Walkup, R. E. (1986). Laser‐induced fluorescence studies of excimer laser ablation of Al2O3. Applied physics letters, 49(21), 1478-1480.
and papers, which cited above paper.
5. The list of references consists of rather old sources and does not substantiate the relevance and importance of this work at all. In this context, the introduction of this article should be seriously revised.
6. Reverences 8 and 11 need to be checked.
In general, the manuscript is interesting and can be recommended for publication after constructive reflection on the above comments.
Author Response
Please see attached for deatails of comments.
Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
The authors have responded to each question and comment. All responses are well written. I still have questions before the next step.
In figure 12, have you checked the points unirradiated and irradiated by the Laser beam in the sample?
For example, after finishing the laser treatment, many debris was scattered on the surface of Al2O3. Did you find anything differences in the debris, directly laser-irradiated point, and another point (not treated)?
Author Response
Please see the attached document for details.
Author Response File: Author Response.pdf
Reviewer 2 Report
The authors have significantly improved their original manuscript, which now can be accepted.
Author Response
Thank you very much for your comments.
