Thermal and microstructural investigations of oxyfluoride lead germanate glasses

Mithat Cem Elbizim; Demet Tatar; Deniz Yilmaz; M. Lütfi Öveçoǧlu

doi:10.1002/pssc.201000747

Thermal and microstructural investigations of oxyfluoride lead germanate glasses

Mithat Cem Elbizim^*, Demet Tatar, Deniz Yilmaz, M. Lütfi Öveçoǧlu

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, thermal behaviour and microstructural characterization of germanium rich GeO₂-PbF₂ binary glass system were investigated. The studies were conducted for 10, 20 and 30 mol% PbF₂ contents. The thermal behaviour of oxyfluoride lead germanate glasses was studied using differential thermal analysis (DTA) at the heating rate of 10 °C/min, in air flow. Effects of different heating rates and PbF₂ content were investigated on the glass transition, crystallization and melting temperatures. The structural investigations of as-cast and annealed samples which are heat-treated above crystallization peak temperatures were conducted using X-ray diffractometry (XRD) and scanning electron microscopy (SEM). Utilizing these techniques, α-GeO₂, α-PbGe₄O₉, γ-PbGe₄O₉, PbGeO₃ and Pb₃GeO₅ phases were identified..

Original language	English
Pages (from-to)	3143-3146
Number of pages	4
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	8
Issue number	11-12
DOIs	https://doi.org/10.1002/pssc.201000747
Publication status	Published - Nov 2011

Keywords

Crystallization
Lead germanate glasses
Microstructure
Thermal properties

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10.1002/pssc.201000747

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title = "Thermal and microstructural investigations of oxyfluoride lead germanate glasses",

abstract = "In this study, thermal behaviour and microstructural characterization of germanium rich GeO2-PbF2 binary glass system were investigated. The studies were conducted for 10, 20 and 30 mol% PbF2 contents. The thermal behaviour of oxyfluoride lead germanate glasses was studied using differential thermal analysis (DTA) at the heating rate of 10 °C/min, in air flow. Effects of different heating rates and PbF2 content were investigated on the glass transition, crystallization and melting temperatures. The structural investigations of as-cast and annealed samples which are heat-treated above crystallization peak temperatures were conducted using X-ray diffractometry (XRD) and scanning electron microscopy (SEM). Utilizing these techniques, α-GeO2, α-PbGe4O9, γ-PbGe4O9, PbGeO3 and Pb3GeO5 phases were identified..",

keywords = "Crystallization, Lead germanate glasses, Microstructure, Thermal properties",

author = "{Cem Elbizim}, Mithat and Demet Tatar and Deniz Yilmaz and {L{\"u}tfi {\"O}ve{\c c}oǧlu}, M.",

year = "2011",

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doi = "10.1002/pssc.201000747",

language = "English",

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pages = "3143--3146",

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AU - Cem Elbizim, Mithat

AU - Tatar, Demet

AU - Yilmaz, Deniz

AU - Lütfi Öveçoǧlu, M.

PY - 2011/11

Y1 - 2011/11

N2 - In this study, thermal behaviour and microstructural characterization of germanium rich GeO2-PbF2 binary glass system were investigated. The studies were conducted for 10, 20 and 30 mol% PbF2 contents. The thermal behaviour of oxyfluoride lead germanate glasses was studied using differential thermal analysis (DTA) at the heating rate of 10 °C/min, in air flow. Effects of different heating rates and PbF2 content were investigated on the glass transition, crystallization and melting temperatures. The structural investigations of as-cast and annealed samples which are heat-treated above crystallization peak temperatures were conducted using X-ray diffractometry (XRD) and scanning electron microscopy (SEM). Utilizing these techniques, α-GeO2, α-PbGe4O9, γ-PbGe4O9, PbGeO3 and Pb3GeO5 phases were identified..

AB - In this study, thermal behaviour and microstructural characterization of germanium rich GeO2-PbF2 binary glass system were investigated. The studies were conducted for 10, 20 and 30 mol% PbF2 contents. The thermal behaviour of oxyfluoride lead germanate glasses was studied using differential thermal analysis (DTA) at the heating rate of 10 °C/min, in air flow. Effects of different heating rates and PbF2 content were investigated on the glass transition, crystallization and melting temperatures. The structural investigations of as-cast and annealed samples which are heat-treated above crystallization peak temperatures were conducted using X-ray diffractometry (XRD) and scanning electron microscopy (SEM). Utilizing these techniques, α-GeO2, α-PbGe4O9, γ-PbGe4O9, PbGeO3 and Pb3GeO5 phases were identified..

KW - Crystallization

KW - Lead germanate glasses

KW - Microstructure

KW - Thermal properties

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Thermal and microstructural investigations of oxyfluoride lead germanate glasses

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Keywords

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