Lithium Disilicate Bioceramic Obtained from Alternative Silica Source, the Rice Husk

Felipe Antunes Santos; Claudinei dos Santos; Durval Rodrigues Júnior; Daltro Garcia Pinatti; Erika Davim; Maria Helena F. V. Fernandes

doi:10.4028/www.scientific.net/MSF.727-728.1158

Paper Titles

Degradation of Y₂O₃-Stabilized ZrO₂ Ceramics in Artificial Saliva: ICP Analysis of Dissolved Y³⁺ and Zr⁴⁺ Ions
p.1136

Development of Polymer/Nanoceramic Composite Material with Potential Application in Biomedical Engineering
p.1142

Dispersed Hydroxyapatite Bioglass 45S5 Composites: Comparative Evaluation of the Use of Bovine Bone and Synthetic Hydroxyapatite
p.1147

Extracellular Synthesis of Silica Oxide Particles by Fusarium oxysporum from Rice Husk Ash
p.1153

Lithium Disilicate Bioceramic Obtained from Alternative Silica Source, the Rice Husk
p.1158

Synthesis of Alpha-Tricalcium Phosphate by Wet Reaction and Evaluation of Mechanical Properties
p.1164

Properties of Calcium Phosfate Cement with Addition of Dispersant and Hydrogel
p.1170

Polydimethylsiloxane/Calcium Phosphates Composites: Effect of the Fillers Modification on the Cross-Linking and Surface Energy
p.1175

Effect on Mechanical Strength of Tricalcium Phosphate Cement by Additions of Sodium Alginate
p.1181

HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Lithium Disilicate Bioceramic Obtained from...

Lithium Disilicate Bioceramic Obtained from Alternative Silica Source, the Rice Husk

Abstract:

The crystallization process of lithium disilicate glass-ceramic with SiO₂ from rice husk silica replacing the high-purity SiO₂starting powder has been investigated in this work. Glasses were developed at the stoichiometric composition of 66%.molSiO₂:33%.molLiO₂ using commercial SiO₂ and the one obtained by thermochemical treatment of rice husk. The influence of rice husk-SiO₂ on crystallization process to different granulometry, microstructure and kinetic behavior was determined and discussed. Investigations were carried out by means of differential thermal analysis (DTA), X-ray fluorescence (XRF), X-ray diffractometry (XRD) and scanning electron microscopy (SEM). Amorphous and transparent glasses were obtained after melting. The lithium disilicate glass-ceramic crystallization peaks (Tp) are between 550 to 660°C to different granulometry (<63μm, 63μm < x < 250μm and 1mm < x < 2mm) and DTA heat rates (5; 10; 15; and 20°C/min) in both glasses from different silica sources, and the formed phase was Li₂Si₂O₅ as the crystalline phase after DTA thermal analysis as XRD confirmation. Improve in mechanical properties were estimated by morphological analysis of the microstructure modification in increasing the heat treatments temperature by SEM. The increase of glass substitution for crystalline phase was also observed with SEM images to both glass-ceramics from different silica sources.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 727-728)

Pages:

1158-1163

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.1158

Citation:

Cite this paper

Online since:

August 2012

Authors:

Felipe Antunes Santos, Claudinei dos Santos, Durval Rodrigues Júnior, Daltro Garcia Pinatti, Erika Davim, Maria Helena F. V. Fernandes

Keywords:

Biomaterial, Dental Prostheses, Differential Thermal Analysis, Glass-Ceramic, Lithium Disilicate, Rice Husk Silica

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] A.L. Oliveira, J.M. Oliveira, R.N. Correia, R.N.; M.H.V. Fernandes, J.R. Frade, Crystallization of Whitlockite from a Glass in the System CaO-P2O5-SiO2-MgO. J. Am. Ceram. Soc. vol 81 (1998), 3270-3276.

DOI: 10.1111/j.1151-2916.1998.tb02767.x

Google Scholar

[2] S.J. Kim, Y.H. Rim, Y.S. Yang, Kinetics of non-isothermal crystallization process in various sized Li2B4O7 glasses. Solid State Comm. vol 131 (2004), 129-133.

DOI: 10.1016/j.ssc.2004.04.033

Google Scholar

[3] A. Arora, A. Goel, E.R. Shaaban, K. Singh, O.P. Pandey, J.M.F. Ferreira, Crystallization kinetics of BaO-ZnO-Al2O3-B2O3-SiO2 glass. Phys. B vol 403 (2008), 1738-1746.

DOI: 10.1016/j.physb.2007.10.001

Google Scholar

[4] Z.Z. Yuan, X.D. Chen, B.X. Wang, Y.J. Wang, Kinetics study on non-isothermal crystallization of the metallic Co43Fe20Ta5. 5B31. 5 glass. J. Alloys Compd vol 407 (2006), 163–169.

DOI: 10.1016/j.jallcom.2005.06.022

Google Scholar

[5] C. Popescu, Integral method to analyze the kinetics of heterogeneous reactions under non-isothermal conditions A variant on the Ozawa-Flynn-Wall method. Therm. Acta vol 285 (1996), 309-323.

DOI: 10.1016/0040-6031(96)02916-4

Google Scholar

[6] S.H. Al-Heniti, Kinetic study of non-isothermal crystallization in Fe78Si9B13 metallic glass. J. Alloys Compd vol 484 (2009), 177-184.

DOI: 10.1016/j.jallcom.2009.05.076

Google Scholar

[7] P. Goharian, A. Nemati, M. Shabanian, A. Afshar, Properties, crystallization mechanism and microstructure of lithium disilicate glass–ceramic. J. of Non-Cryst. Solids vol 356 (2010), 208–214.

DOI: 10.1016/j.jnoncrysol.2009.11.015

Google Scholar

[8] G. Wen, X. Zheng, L. Song, Effects of P2O5 and sintering temperature on microstructure and mechanical properties of lithium disilicate glass-ceramics. Acta Mat. vol 55 (2007), 3583–3591.

DOI: 10.1016/j.actamat.2007.02.009

Google Scholar

[9] A. Arvind, A. Sarkar, V.K. Shrikhande, A.K. Tyagi, G.P. Kothiyal, The effect of TiO2 addition on the crystallization and phase formation in lithium aluminum silicate (LAS) glasses nucleated by P2O5. J. Phys. Chem. Sol. vol 69 (2008), 2622-2627.

DOI: 10.1016/j.jpcs.2008.06.003

Google Scholar