Crystallization Kinetics and Heat Treatment Temperature on Microstructure of Na₂O-CaO-P₂O₅-TiO₂ Glass System

Abstract:

Bioactive glass ceramics from Na₂O-CaO-P₂O₅-TiO₂ system have been fabricated by conventional melt quenching method. In order to change the fabricated glass to glass ceramic samples, a heat treatment technique was employed using temperatures ranging between 700 and 900°C for 2 h. Glass transition and crystallization temperature were analyzed via differential thermal analyzer (DTA). In addition, phase formation and microstructure of the glass-ceramics were also investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). From the crystallization kinetics, the crystallization rate constant (n) of the glass was found to be close to the value of 3, indicating the two-dimensional growth of crystals occurred in the glass ceramics. From the XRD results, the major crystalline phases were sodium titanium phosphate and calcium sodium phosphate along with titanium dioxide as the minor crystalline phases presented in high heat treatment temperatures (750-900°C) of the glass ceramics. SEM of the crystallized base glass Na₂O-CaO-P₂O₅-TiO₂ system, showed that crystallization of dendritic-like growths in the glass ceramics.

• Periodical: Key Engineering Materials (Volume 766)
• Pages: 151-156
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.766.151
• Online since: April 2018
• Authors: Pratthana Intawin, Sukum Eitssayeam, Gobwute Rujijanagul, Tawee Tunkasiri*, Kamonpan Pengpat
• Keywords: Glass System, Na₂O-CaO-P₂O₅-TiO₂, Non-Isothermal Crystallization Kinetic, Thermal Parameters

References

[1] D. Carta, J. C. Knowles, M. E. Smith, Synthesis and structural characterization of P2O5–CaO–Na2O sol–gel materials, J. Non-Cryst. Solids. 353 (11–12) (2007) 1141–1149.

DOI: 10.1016/j.jnoncrysol.2006.12.093

[2] Z. M. Da Cost, W. M. Pontuschka, ESR dosimeter based on P2O5–CaO–Na2O glass system, J. Non-Cryst. Solids. 352 (2006) 3663–3667.

DOI: 10.1016/j.jnoncrysol.2006.03.113

[3] A. S Monem, H. A. ElBatal, E. M. A. Khalil, M. A. Azooz, Y. M. Hamdy, In vivo behavior of bioactive phosphate glass-ceramics from the system P2O5–Na2O–CaO containing TiO2, J Mater Sci: Mater Med. 19 (2008) 1097–1108.

DOI: 10.1007/s10856-007-3044-3

[4] V. Salih, K. Franks, M. James, GW. Hastings, JC. Knowles, I. Olsen, Development of soluble glasses for biomedical use Part II: the biological response of human osteoblast cell lines to phosphate-based soluble glasses, J. Mater. Sci. Mater. Med.11 (10) (2000).

[5] I. Abrahams, G.E. Hawkes, J.C. Knowles, Phosphorus speciation in sodium–calcium–phosphate ceramics, J. Chem. Soc. Dalton Trans. 9 (1997) 1483-1484.

DOI: 10.1039/a701029j

[6] I. Abrahams, K. Franks, G.E. Hawkes, G. Philippou, J.C. Knowles, P. Bodart, T. Nunes, 23Na,27Al and 31P NMR and X-ray powder diffraction study of Na/Ca/Al phosphate glasses and ceramics, J. Mater. Chem. 7 (1997) 1573-1580.

DOI: 10.1039/a608325k

[7] K. Franks, I. Abrahams, J.C. Knowles, Development of soluble glasses for biomedical use Part I: In vitro solubility measurement, J. Mater. Sci.: Mater. Med.11 (2000) 609-614.

[8] C.L. Lo, J.G. Duh, B.S. Chiou, W.H. Lee, Microstructure characteristics for anorthite composite glass with nucleating agents of TiO2 under nonisothermal crystallization, Mater. Res. Bull. 37 (2002) 1949–(1960).

DOI: 10.1016/s0025-5408(02)00873-5

[9] D.P. Mukherjee, S.K. Das, SiO2–Al2O3–CaO glass ceramics: effects of CaF2 on crystallization, microstructure and properties, Ceram. Int. 39 (2013) 571–578.

DOI: 10.1016/j.ceramint.2012.06.066

[10] P.W. McMillan, Glass-Ceramics, 2nd Ed., Academic, London, (1979).

[11] W. Vogel, Glass Chemistry, Springer, Berlin, (1994).

[12] P.F. James, Glass ceramics: new compositions and uses, J. Non-Cryst. Solids. 181 (1995) 1–15.

[13] Y. Nan, W. Lee, P.F. James, J. Amer. Ceram. Soc. 75 (1992) 1641.

[14] O. Ozturk, T. Gokcen, S. Cavdar, H. Koralay, A. T. Tasci, A study on nucleation, crystallization kinetics, microstructure and mechanical properties of Ru–Bi partial substituted BSCCO glass ceramics, J Therm Anal Calorim. 123 (2016) 1073–1082.

DOI: 10.1007/s10973-015-5028-8

[15] T. Ozawa, Kinetics of non-isothermal crystallization, Polymer. 12 (3) (1971) 150–158.

DOI: 10.1016/0032-3861(71)90041-3

[16] K. Matusita, S. Sakka, Kinetic study on crystallization of glass by differential thermal analysis-criterion on application of kissinger plot, J. Non-Cryst. Solids. 38–39 (1980) 741–746.

DOI: 10.1016/0022-3093(80)90525-6

[17] H. E. Kissinger, Reaction kinetics in differential thermal analysis, Anal. Chem. 1957, 29 (11): 1702–1706.

DOI: 10.1021/ac60131a045

[18] K. Matusita, S. Sakka, Kinetic study on non-isothermal crystallization of glass by thermal analysis, Bull. Inst. Chem. Res. 59 (1981) 159-171.