Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash

Glass ceramics are polycrystalline materials of fine microstructure that are produced by the controlled crystallization of a glass. The previous review of other researchers revealed that knowledge and expertise has been accumulated on the process of transformation of silicate waste into useful glass...

Full description

Saved in:

Bibliographic Details
Main Author:	Edros, Norfarezah Hanim
Format:	Thesis
Language:	English English
Published:	2010
Subjects:	Thermal diffusivity Glass-ceramics Polycrystals
Online Access:	http://psasir.upm.edu.my/id/eprint/19594/1/FS_2010_45_F.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.19594
record_format	uketd_dc
spelling	my-upm-ir.195942013-04-02T06:31:36Z Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash 2010-10 Edros, Norfarezah Hanim Glass ceramics are polycrystalline materials of fine microstructure that are produced by the controlled crystallization of a glass. The previous review of other researchers revealed that knowledge and expertise has been accumulated on the process of transformation of silicate waste into useful glass ceramic products. The aim of this research is to study the thermal diffusivity of a glass ceramic made from a mixture of soda lime silica and coal fly ash. The effect of sample compression pressure, sintering temperature and sample composition on the thermal diffusivity value was investigated in detail. All samples were measured using the Laser Flash Apparatus (LFA), X-Ray Fluorescence (XRF), Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD). It was found that the thermal diffusivity value of the samples is dependent on the pressure, sintering temperature and sample composition. Higher sintering temperature, coal fly ash content and compression pressure resulted in higher thermal diffusivity value. The experimental results showed that the thermal diffusivity value is in the range of 0.102 mm2/s to 0.858 mm2/s. As the ambient temperature increased from room temperature up to 300°C, the thermal diffusivity values were also increased. This suggests that thermal diffusivity is basically influenced by phonon interaction that determines the phonon mean free path. The density value and linear shrinkage increase as the coal fly ash content and sintering temperature increased. XRD results revealed the formation of Diopside (CaMgO6Si2) and Wollastonite (CaSiO3) phases. Thermal diffusivity Glass-ceramics Polycrystals 2010-10 Thesis http://psasir.upm.edu.my/id/eprint/19594/ http://psasir.upm.edu.my/id/eprint/19594/1/FS_2010_45_F.pdf application/pdf en public masters Universiti Putra Malaysia Thermal diffusivity Glass-ceramics Polycrystals Faculty of Science English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Thermal diffusivity Glass-ceramics Polycrystals
spellingShingle	Thermal diffusivity Glass-ceramics Polycrystals Edros, Norfarezah Hanim Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash
description	Glass ceramics are polycrystalline materials of fine microstructure that are produced by the controlled crystallization of a glass. The previous review of other researchers revealed that knowledge and expertise has been accumulated on the process of transformation of silicate waste into useful glass ceramic products. The aim of this research is to study the thermal diffusivity of a glass ceramic made from a mixture of soda lime silica and coal fly ash. The effect of sample compression pressure, sintering temperature and sample composition on the thermal diffusivity value was investigated in detail. All samples were measured using the Laser Flash Apparatus (LFA), X-Ray Fluorescence (XRF), Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD). It was found that the thermal diffusivity value of the samples is dependent on the pressure, sintering temperature and sample composition. Higher sintering temperature, coal fly ash content and compression pressure resulted in higher thermal diffusivity value. The experimental results showed that the thermal diffusivity value is in the range of 0.102 mm2/s to 0.858 mm2/s. As the ambient temperature increased from room temperature up to 300°C, the thermal diffusivity values were also increased. This suggests that thermal diffusivity is basically influenced by phonon interaction that determines the phonon mean free path. The density value and linear shrinkage increase as the coal fly ash content and sintering temperature increased. XRD results revealed the formation of Diopside (CaMgO6Si2) and Wollastonite (CaSiO3) phases.
format	Thesis
qualification_level	Master's degree
author	Edros, Norfarezah Hanim
author_facet	Edros, Norfarezah Hanim
author_sort	Edros, Norfarezah Hanim
title	Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash
title_short	Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash
title_full	Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash
title_fullStr	Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash
title_full_unstemmed	Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash
title_sort	thermal diffusivity of glass ceramic synthesized from soda lime and coal fly ash
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Science
publishDate	2010
url	http://psasir.upm.edu.my/id/eprint/19594/1/FS_2010_45_F.pdf
_version_	1747811419916599296

Thermal Diffusivity of Glass Ceramic Synthesized from Soda Lime and Coal Fly Ash

Similar Items