For Libraries For Publication Open Access Downloads About Us Contact Us
Paper Titles
Synthesis and Magnetic Properties of SrFe12-XCoxO19 (x= 0- 2) Hexaferrite Nanoparticles
p.925
Preparation, Characterization and Phototoxicity of Photosan-Loaded Hollow Silica Nanospheres for Photodynamic Therapy
p.930
Design of Dye-Sensitized Solar Cell by Inserting Single-Walled Carbon Nanotubes
p.939
Metal-Metal Bonding Process Using Ag2O/CuO Mixed Particles
p.945
Glass Anatase Nanocrystal Composites and their Crystallization Kinetics
p.950
Preparation of Nano-Particles of Transition Metal Oxides Using Ball-Milling and its Application for Lithium Battery
p.955
Thermal Effect on Dynamic Stability of Single-Walled Carbon Nanotubes in Low and High Temperatures Based on Nonlocal Shell Theory
p.959
Carbothermic Reduction of Mechanically Activated MoO3 to Synthesize Nano-Crystalline Metallic Mo
p.965
Control of Pore Size of High Purity Nanoporous Silica Formed from Volcanic Ash Deposit Shirasu
p.970

Glass Anatase Nanocrystal Composites and their Crystallization Kinetics

Article Preview

Abstract:

Nanocrystallization of anatase phase was established in BaO-TiO2-B2O3 glass system. Crystallization kinetics of anatase phase in these glasses were investigated using non-isothermal differential scanning calorimetry (DSC) at three different heating rates (10, 20 & 30 K/min). Scanning Electron Microscopy (SEM) carried out on heat treated (at 920 K) glasses confirmed bulk nucleation and three-dimensional growth. Johnson-Mehl-Avarami model could not be applied for this system suggesting considerable overlap of the nucleation and growth involving complex transformation process. However, modified Kissinger and Ozawa models were used to calculate the effective activation energy associated with anatase crystallization. The kinetic exponent n was found to be temperature dependent indicating the change in the crystallization mechanism. This was attributed to the high entropy fusion of anatase phase, fast crystallization rate and nano dimension of the anatase phase.

You might also be interested in these eBooks
Manufacturing Science and Technology III View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 622-623)

Pages:

950-954

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.622-623.950

Citation:

Cite this paper

Online since:

December 2012

Authors:

Gadige Paramesh, K.B.R. Varma

Keywords:

Anatase, Crystallization Kinetics, DSC, Glass Nano Composites, Non-Isothermal

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] L. R. Pinckney and G. H. Beall: J. Am. Ceram. Soc. Vol. 91, (2008), p.773.

Google Scholar

[2] S. Likitvanichkul and W.C. Lacourse: J. Mater. Sci. Vol. 33 (1998), p.5901.

Google Scholar

[3] G. Paramesh and K.B.R. Varma: J. Am. Ceram. Soc. (2012), doi: 10. 1111/j. 1551-2916. 2012. 05309. x.

Google Scholar

[4] J. Málek: Thermochimica Acta Vol. 267 (1995), p.63.

Google Scholar

[5] D.W. Henderson, J. Non-Cryst. Solids Vol. 30 (1979), p.301.

Google Scholar

[6] K.A. Jackson D.R. Uhlmann and J.D. Hunt: J. Cryst. Growth, Vol. 1 (1967), p.1.

Google Scholar

[7] K. Matusita, S. Sakka: J. Non-Cryst. Solids Vol. 38-39 (1980), p.741.

Google Scholar

[8] E.D. Zanotto and E. Muller: J. Non-Cryst. Solids Vol. 130 (1991), p.220.

Google Scholar

[9] K. Matusita, T. Komatsu and R. Yokota: J. Mater. Sci. Vol. 19 (1984), p.291.

Google Scholar

[10] D.W. Henderson:J. Therm. Anal. Vol. 15 (1979), p.325.

Google Scholar

[11] J. Málek: Thermochimica Acta Vol. 355 (2000), p.239.

Google Scholar

[12] Stacey J. Smith et. al.: Am. Mineralogist. Vol. 94 (2009), p.236.

Google Scholar

© 2025 Trans Tech Publications Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For open access content, terms of the Creative Commons licensing CC-BY are applied.
Scientific.Net is a registered trademark of Trans Tech Publications Ltd.