ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Influence of seeding on crystallization behaviour of BaNaB9O15 glasses

Vaish, Rahul and Varma, KBR (2009) Influence of seeding on crystallization behaviour of BaNaB9O15 glasses. In: Bulletin of Materials Science, 32 (1). pp. 93-98.

[img] PDF
12_full_text.pdf - Published Version
Restricted to Registered users only

Download (401kB) | Request a copy
Official URL: http://www.ias.ac.in/matersci/confeb09.htm


Transparent BaNaB9O15 (BNBO) glasses were fabricated via the conventional melt-quenching technique. X-ray powder diffraction (XRD) followed by differential scanning calorimetric (DSC) studies confirmed the amorphous and glassy nature of the as-quenched samples, respectively. The effect of seeding on the crystallization of BNBO glasses was studied by non-isothermal DSC method and was modeled using the Johnson-Mehl-Avrami and Ozawa equations. The activation energy for seeded glasses decreased with the increase in fraction of crystallization. The values for the onset of crystallization and Avrami exponent were found to be lower for seeded samples which were associated with the heterogeneous nucleation and epitaxial processes.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Indian Academy of Sciences.
Keywords: Borates; glasses; nonlinear optic materials; crystallization; DSC.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 21 Aug 2009 11:32
Last Modified: 19 Sep 2010 05:34
URI: http://eprints.iisc.ac.in/id/eprint/20852

Actions (login required)

View Item View Item