Abstract
Because calcined alpha alumina (α-Al2O3) inherits the morphology characteristic of milled precursors, it is expected that the α-Al2O3 morphology could be improved by controlling the precursor morphology through the use of different milling processes. The microstructure evolution of the boehmite precursor under different milling treatments (planetary ball milling [PBM] and high-energy ball milling [HEBM]) and its influence on the microstructure of as-synthesized α-Al2O3 were investigated. The experimental results indicate that HEBM has a stronger modification effect in crystallinity, particle size and dispersibility of the boehmite precursor than PBM, which is of great importance to inhibit the formation of the typical worm-like structure of α-Al2O3. The microstructure of α-Al2O3 was further improved by the introduction of NH4BF4, NH4F and NH4Cl as additives. In particular, polygon-like α-Al2O3 particles with a size of 0.5 μm and a good dispersibility were prepared by calcination of the precursor with 30 h of HEBM and 20 wt.% NH4BF4.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: U1504526
Funding source: Key Scientific Research Project for Universities and Colleges in Henan Province
Award Identifier / Grant number: 19A430028
Funding source: Open Foundation of the State Key Laboratory of Refractories and Metallurgy
Award Identifier / Grant number: G201909
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: The authors acknowledge the National Natural Science Foundation of China (Contract No. U1504526), Key Scientific Research Project for Universities and Colleges in Henan Province (Contract No. 19A430028) and the Open Foundation of the State Key Laboratory of Refractories and Metallurgy (G201909) for financial support.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
1. Chen, P. G., Wang, Y. L., Li, X. C., Zhu, B. Q. Int. J. Appl. Ceram. Technol. 2017, 14, 748–758; https://doi.org/10.1111/ijac.12701.Search in Google Scholar
2. Peng, N., Deng, C. J., Zhu, H. X., Li, J., Wang, S. H. Ceram. Int. 2015, 41, 5513–5524; https://doi.org/10.1016/j.ceramint.2014.12.127.Search in Google Scholar
3. Gu, W. J., Zhu, L. L., Shang, X. J., Ding, D. F., Liu, L. Q., Chen, L. G., Ye, G. T. J. Alloys Compd. 2019, 772, 637–641; https://doi.org/10.1016/j.jallcom.2018.09.128.Search in Google Scholar
4. Li, Y., Zhu, L. L., Liu, K., Ding, D. F., Zhang, J., Ye, G. T. Ceram. Int. 2019, 45, 12066–12071; https://doi.org/10.1016/j.ceramint.2019.03.103.Search in Google Scholar
5. Jia, J. G., Liu, D. Q., Zhang, S., Zhang, B., Liu, S. W., Ji, G. S. Ceram. Int. 2019, 45, 19956–19961; https://doi.org/10.1016/j.ceramint.2019.06.253.Search in Google Scholar
6. Ghafaripoor, M., Raeissi, K., Santamaria, M., Hakimizad, A. Surf. Coating. Technol. 2018, 349, 470–479; https://doi.org/10.1016/j.surfcoat.2018.06.027.Search in Google Scholar
7. Wu, Z. S., Shen, Y. D., Dong, Y., Jiang, J. Q. J. Alloys Compd. 2010, 467, 600–604; https://doi.org/10.1016/j.jallcom.2007.12.092.Search in Google Scholar
8. Lin, K. P., Stachiv, I., Fang, T. H. Mater. Res. Express 2017, 4, 075035, 1–7; https://doi.org/10.1088/2053-1591/aa7832.Search in Google Scholar
9. Dutta, S., Kim, T. B., Krentz, T., Vinci, R. P., Chan, H. M. J. Am. Ceram. Soc. 2011, 94, 340–343; https://doi.org/10.1111/j.1551-2916.2010.04307.x.Search in Google Scholar
10. Tian, Q. B., Zhang, Y. Y., Yang, X. J., Dai, J. S., Lv, Z. J. Mater. Res. Express 2017, 4, 1059041–6; https://doi.org/10.1088/2053-1591/aa91b0.Search in Google Scholar
11. Xiang, H. R., Wang, Z. Y., Yin, Q., Wang, L., Zhang, L. W., Wang, H. L., Xu, H. L., Zhang, R., Lu, H. X. Ceram. Int. 2019, 45, 22007–22014; https://doi.org/10.1016/j.ceramint.2019.07.215.Search in Google Scholar
12. Li, J., Pan, Y. B., Xiang, C. S., Ge, Q. M., Guo, J. K. Ceram. Int. 2006, 32, 587–591; https://doi.org/10.1016/j.ceramint.2005.04.015.Search in Google Scholar
13. Su, X. H., Chen, S. F., Zhou, Z. J. Appl. Surf. Sci. 2012, 258, 5712–5715; https://doi.org/10.1016/j.apsusc.2012.02.067.Search in Google Scholar
14. Kong, J., Chao, B. X., Wang, T., Yan, Y. L. Powder Technol. 2012, 229, 7–16; https://doi.org/10.1016/j.powtec.2012.05.024.Search in Google Scholar
15. Li, L., Pu, S. X., Liu, Y. H., Zhao, L. B., Ma, J., Li, J. G. Adv. Powder Technol. 2018, 29, 2194–2203; https://doi.org/10.1016/j.apt.2018.06.003.Search in Google Scholar
16. Chauruka, S. R., Hassanpour, A., Brydson, R., Roberts, K. J., Ghadiri, M., Stitt, H. Chem. Eng. Sci. 2015, 134, 774–783; https://doi.org/10.1016/j.ces.2015.06.004.Search in Google Scholar
17. Chiche, D., Chanéac, C., Revel, R., Jolivet, J. P. Stud. Surf. Sci. Catal. 2006, 162, 393–400; https://doi.org/10.1016/s0167-2991(06)80932-8.Search in Google Scholar
18. Fu, G. F., Wang, J., Xu, B., Gao, H., Xu, X. L., Cheng, H. Trans. Nonferrous Metals Soc. China 2010, 20, s221–s225; https://doi.org/10.1016/s1003-6326(10)60043-x.Search in Google Scholar
19. Zhu, L. L., Sun, C. H., Chen, L. G., Lu, X. F., Li, S., Ye, G. T., Liu, L. Q. Z. Naturforsch. 2017, 72b, 665–670; https://doi.org/10.1515/znb-2017-0079.Search in Google Scholar
20. Tafreshi, M. J., Khanghah, Z. M. Mater. Sci. 2015, 21, 28–31; https://doi.org/10.5755/j01.ms.21.1.4872.Search in Google Scholar
21. Liu, L. Q., Zhang, X., Zhu, L. L., Wei, Y. Z., Guo, C., Li, H. X. Z. Naturforsch. 2019, 74b, 579–583; https://doi.org/10.1515/znb-2019-0080.Search in Google Scholar
22. Baláž, P., Achimovičová, M., Baláž, M., Billik, P. Chem. Soc. Rev. 2013, 42, 7571–7637; https://doi.org/10.1039/C3CS35468G.Search in Google Scholar
23. Li, S., Zhu, L. L., Liu, L. Q., Chen, L. G., Li, H. X., Sun, C. H. Z. Naturforsch. 2018, 73b, 589–596; https://doi.org/10.1515/znb-2018-0080.Search in Google Scholar
24. Ren, Y. J., Sun, Z., Quan, G. G. Adv. Mater. Res. 2014, 852, 44–50; https://doi.org/10.4028/www.scientific.net/amr.852.44.Search in Google Scholar
© 2021 Walter de Gruyter GmbH, Berlin/Boston
