Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/12720
ชื่อเรื่อง: Crystallization kinetic of Er3+-doped BiO1.5-GeO2-BO1.5 glass-ceramic
ผู้แต่ง: Panyata S.
Eitssayeam S.
Tunkasiri T.
Munpakdee A.
Pengpat K.
Keywords: Activation energy
Chromium compounds
Crystallization kinetics
Doping (additives)
Erbium compounds
Germanium oxides
Glass ceramics
Kinetics
Rare earths
Scanning electron microscopy
Bismuth germanate
Calculated values
Crystal dimensions
Crystallization activation energy
Crystallization mechanisms
Non-isothermal condition
Phase formations
Three-dimensional crystals
Bismuth compounds
วันที่เผยแพร่: 2018
บทคัดย่อ: In this work, glass-ceramics containing bismuth germanate doped with a rare-earth element of composition 58.4BiO1.5: 23.4GeO2: 18.2BO1.5: 0.15ErO1.5 was investigated for its kinetic parameters of transformations via available models. The activation energy for the crystallization (Ec) and the Avrami exponent (n) were determined under non-isothermal conditions using various models. X-ray diffraction (XRD) was used to obtain the phase formation. The morphologies of the obtained glass-ceramics were investigated by Scanning electron microscopy (SEM). It was found that the crystallization activation energy and Avrami exponent were dependent on the crystallization fraction (x). The calculated value of the Avrami exponent (n) by using Ozawa and Lu model indicated that the crystallization mechanism in this glass is between two and three-dimensional crystal growth. Doping of Er2O3 was found to improve modification of this Bi2GeO5 glass-ceramic embedded with a desired crystal dimension. © 2018
URI: https://ir.swu.ac.th/jspui/handle/123456789/12720
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054129888&doi=10.1016%2fj.ceramint.2018.08.262&partnerID=40&md5=154a42ad52ad965928515ad2ca47b4e2
ISSN: 2728842
Appears in Collections:Scopus 1983-2021

Files in This Item:
There are no files associated with this item.


Items in SWU repository are protected by copyright, with all rights reserved, unless otherwise indicated.