Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/58703
Title: Crystallization kinetics and heat treatment temperature on microstructure of Na<inf>2</inf>O-CaO-P<inf>2</inf>O<inf>5</inf>-TiO<inf>2</inf>glass system
Authors: Pratthana Intawin
Sukum Eitssayeam
Gobwute Rujijanagul
Tawee Tunkasiri
Kamonpan Pengpat
Keywords: Engineering
Materials Science
Issue Date: 1-Jan-2018
Abstract: © 2018 Trans Tech Publications, Switzerland. Bioactive glass ceramics from Na2O-CaO-P2O5-TiO2system have been fabricated by conventional melt quenching method. In order to change the fabricated glass to glass ceramic samples, a heat treatment technique was employed using temperatures ranging between 700 and 900°C for 2h. Glass transition and crystallization temperature were analyzed via differential thermal analyzer (DTA). In addition, phase formation and microstructure of the glass-ceramics were also investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). From the crystallization kinetics, the crystallization rate constant (n) of the glass was found to be close to the value of 3, indicating the two-dimensional growth of crystals occurred in the glass ceramics. From the XRD results, the major crystalline phases were sodium titanium phosphate and calcium sodium phosphate along with titanium dioxide as the minor crystalline phases presented in high heat treatment temperatures (750-900°C) of the glass ceramics. SEM of the crystallized base glass Na2O-CaO-P2O5-TiO2system, showed that crystallization of dendritic-like growths in the glass ceramics.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85046088390&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/58703
ISSN: 10139826
Appears in Collections:CMUL: Journal Articles

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