International Journal of Modern Physics and Applications
Articles Information
International Journal of Modern Physics and Applications, Vol.6, No.1, Mar. 2020, Pub. Date: Mar. 9, 2020
Structural Characterization of Lithium Aluminum Borate Glasses
Pages: 9-12 Views: 172 Downloads: 79
[01] Gomaa El Damrawi, Glass Research Group, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt.
[02] Rawya Ramadan, Microwave Physics and Dielectrics Department, Physics Research Division, National Research Centre, Dokki, Cairo, Egypt.
[03] Asmaa Barakah, Glass Research Group, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt.
Glasses in the xLi2O (40-x)Al2O3.60B2O3 system (0≤x≤ 40) have been prepared by melt quenching technique. 27Al NMR measurements are applied to determine the structure role of Al2O3 in a wide range of composition. A great difference in the structure of the studied glasses is revealed by changing Li2O to Al2O3 molar ratios. The AlO6, AlO5 and AlO4 structured groups are the major units of pure Al2O3. On the other side, AlO4 and AlO5 are the main units in the binary Al2O3-B2O3 glass (Li2O=0 and 40 mol% Al2O3). Increasing Li2O/Al2O3 molar ratio results in the decreasing AlO5 concentration. In addition, AlO4 is considered the dominant species. Further increase in Li2O concentration results in formation of non-bridging oxygen atoms (NBOs) in AlO4 groups. Glasses of the high Li2O/Al2O3 ratio have an amorphous structure. More ordered crystalline phases are considered in glasses of a high Al2O3 concentration. The difference in the cation field strength (CFS) between Al3+, B3+ and Li+ cations was observed to affect the generation of AlO5, AlO6 and BO4 units.
Borate Glasses, NMR Investigation, Coordination Number, Crystallized Phases
[01] Bradtmüller H, Uesbeck, Eckert H, Murata T, Nakane S, Yamazak Hi. Structural Origins of Crack Resistance on Magnesium Aluminoborosilicate Glasses Studied by Solid-State NMR. The Journal of Physical Chemistry C 2019, 123 (24) 14941-14954. DOI: 10.1021/acs.jpcc.9b03600Kaneko
[02] Kristine F. Frederiksen Kacper Januchta Nerea Mascaraque Randall E. Youngman Mathieu Bauchy Sylwester J. Rzoska Michal Bockowski Morten M. Smedskjaer, Structural Compromise between High Hardness and Crack Resistance in Aluminoborate Glasses, Phys. Chem. B 2018, 122, 23, 6287-6295.
[03] El-Damrawi G., Hassan A. K., Shahboub A., 31P and 27Al nuclear magnetic resonance studies on silver phosphate glasses,: Magn. Reson. Solids (2018), 20, 18202.
[04] Sinton, C. W. and LaCourse, W. C. Experimental Survey of the Chemical Durability of Commercial Soda-Lime-Silicate Glasses. Materials Research Bulletin, (2001) 36, 2471- 2479.
[05] El-Kheshen, A. A., Khaliafa, F. A., Saad, E. A. and Elwan, R. L. Effect of Al2O3 Addition on Bioactivity, Thermal and Mechanical Properties of Some Bioactive Glasses. Ceramics International, (2008) 34, 1667-1673.
[06] Stebbins, J. F., Kroeker, S., Lee, S. K. and Kiczenski, T. JQuantification of Five- and Six- Coordinated Aluminum in Aluminosilicate and Fluoride-Containing Glasses by High Field, High Resolution 27Al-NMR. Journal of Non-Crystalline Solids (2000) 275, 1-6.
[07] MacKenzie, K. J. D. and Smith, M. E. (2002) Multinuclear Solid State Nuclear Magnetic Resonance of Materials. Pergamon Press, Oxford.
[08] Stevensson, B. and Eden, M. (2013) Structural Rationalization of the Microhardness Trends of Rare-Earth Aluminosilicate Glasses: Interplay between the RE3+ Field- Strength and the Aluminum Coordinations. J. Non-Cryst. Solids, 378, 163-167.
[09] Iftekhar, S., Pahari, B., Okhotnikov, K., Jaworski, A., Stevensson, B., Grins, J. and Edeń, M. (2012) Properties and Structures of RE2O3-Al2O3-SiO2 (RE=Y, Lu) Glasses Probed by Molecular Dynamics Simulations and Solid-State NMR: The Roles of Aluminum and Rare-Earth Ions for Dictating the Microhardness. The Journal of Physical Chemistry C, 116, 18394-18406.
[10] Rosales-Sosa, G. A., Masuno, A., Higo, Y., Inoue, H., Yanaba, Y., Mizoguchi, T., Umada, T., Okamura, K., Kato, K. and Watanabe, Y. (2015) High Elastic Moduli of a 54Al2O3- 46Ta2O5 Glass Fabricated via Containerless Processing. Scientific Reports, 5, Article ID: 15233.
[11] Rosales-Sosa, G. A., Masuno, A., Higo, Y. and Inoue, H. (2016) Crack-Resistant Al2O3- SiO2 Glasses. Scientific Reports, 6, Article ID: 23620.
[12] He, M., Chen, X. L., Zhou, T., Hu, B. Q., Xu, Y. P. and Xu, T. (2001) Crystal Structure and Infrared Spectra of Na2Al2B2O7. Journal of Alloys and Compounds, 327, 210-214.
[13] A. A. Osipov, V. E. Eremyashev, A. S. Mazur, P. M. Tolstoi, and L. M. Osipov “Coordination State of Aluminum and Boron in Barium Aluminoborate Glass”, Glass Physics and Chemistry, 42 (2016, No. 3) 230–237 DOI: 10.1134/S1
[14] El Damrawi G, Ramadan R. and Khlil E, Morpological and structural studies on PbBr2-B2O3 glasses. J nono-crystalline solids, In press (2020).
[15] Gautam C, Kumar A, and Singh A K, A Review on Infrared Spectroscopy of Borate Glasses with Effects of Different Additives. ISRN Ceramics Volume 2012, Article ID 428497, 17 pages,
[16] Dail L. P., Deng HZang, J. J. Mater. Sci: Mater. Electron., 19 (2008) 727-734.
[17] Ruske F., Pflug A., Sittinger V. Thin Solid Films, 14 (2008) 4472-4477.
[18] Ranjbar M., Dehghan G. Noudeh M. A. &. zadeh I. M, Journal Artificial Cells, Nanomedicine, and Biotechnology An International Journal Volume 47 (2019) 201-209.
[19] He M, Chen X, Zhou T., Hu B. Q., Crystal structure and infrared spectra of Na2Al2B2O7, Journal of Alloys and compounds 327 (1): 210-214 · August 2001
MA 02210, USA
AIS is an academia-oriented and non-commercial institute aiming at providing users with a way to quickly and easily get the academic and scientific information.
Copyright © 2014 - American Institute of Science except certain content provided by third parties.