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Effect of ultrasonic treatment on surface crystallization of calcium bismuth borate glasses

Tukaram, Shet and Varma, KBR (2014) Effect of ultrasonic treatment on surface crystallization of calcium bismuth borate glasses. In: PHYSICS AND CHEMISTRY OF GLASSES-EUROPEAN JOURNAL OF GLASS SCIENCE AND TECHNOLOGY PART B, 55 (2). pp. 103-110.

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Abstract

Transparent glasses in CaO-Bi2O3-B2O3 system were fabricated via the conventional melt-quenching technique. X-ray powder diffraction (XRD) and differential thermal analysis (DTA) carried out on the as-quenched samples confirmed their amorphous and glassy nature respectively. The surface crystallization behaviour of these glasses with and without ultrasonic surface treatment (UST) was monitored using XRD, optical microscopy and scanning electron microscopy (SEM). The volume fraction, depth of crystallization and the (001) orientation factor for the heat treated samples with and without UST were compared. The ultrasonically-treated samples on subsequent heat treatment were found to crystallize at lower temperatures associated with the highest degree of orientation factor (0.95) in contrast with those of non-UST samples. These surface crystallized glasses were found to exhibit nonlinear optical behaviour emitting green light (532 nm) when they were exposed to the infrared radiation (1064 nm) using Nd:YAG laser.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the SOC GLASS TECHNOLOGY, 9 CHURCHILL WAY, SHEFFIELD S35 2PY, CHAPELTOWN, ENGLAND
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 18 Jun 2014 06:10
Last Modified: 18 Jun 2014 06:10
URI: http://eprints.iisc.ac.in/id/eprint/49262

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