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Study of Nucleation and Crystallization of SLG Mixing with SiO2, ZnO, TiO2 and CuO by SEM/EDX

Category : Physical Science
Author : N. Kulrat, D. Bootkul, S. Dangtip*, S. Intarasiri
Email : somsak.dan@mahidol.edu
Keyword : Glass-ceramics, Soda lime glass (SLG), Nucleation and crystallization, Scanning electron microscope and energy dispersive X-rays spectroscopy (SEM/EDX)
Volume : Microsc. Microanal. Res. 2017 30(1)
DOI Number : 10.14456/microsc-microanal-res.2017.4
ISSN :
Download Start & End Page : 16 - 19


Abstract

This study presents the progression of nucleation and crystallization from composition of soda lime glass (SLG) and oxides as 60SLG-35SiO2-2TiO2-2ZnO-1CuO through single step sintering at 850°C. X-ray diffraction (XRD) showed a higher degree of crystallinity and larger crystallite size of a-SiO2 after sintering. It was also observed that plane (100) shrank to a smaller d100 spacing after sintering. XRD peaks from other oxides than SiO2 decreased dramatically after sintering; possibly signifying a transition into the silica network. The microstructure of the sintered samples was analysed using scanning electron microscope (SEM) and SEM/energy dispersive X-ray spectroscopy (SEM/EDX). The SEM/EDX analysis revealed SiO2 grains and whiskers of crystalline phase in many areas. A lower concentration of zinc and higher concentration of titanium were found to be associated with whiskers. This work has shown a possibility to utilize single-stage heat treatment for nucleation and crystallization of soda lime glass (SLG).




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