Processing and characterization of transparent ceramics

Light scattering in ceramic materials has prevented the use of polycrystalline ceramics with anisotropic optical properties in applications such as special windows worked under extream conditions (very high/low temperature, high pressure). Further development in processing technology has allowed fo...

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Main Author: Goh, Nicholas Chung Min
Other Authors: Kong Ling Bing
Format: Final Year Project
Language:English
Published: 2017
Subjects:
Online Access:http://hdl.handle.net/10356/70684
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-706842023-03-04T15:41:54Z Processing and characterization of transparent ceramics Goh, Nicholas Chung Min Kong Ling Bing School of Materials Science and Engineering Advanced Materials Research Centre DRNTU::Engineering::Materials Light scattering in ceramic materials has prevented the use of polycrystalline ceramics with anisotropic optical properties in applications such as special windows worked under extream conditions (very high/low temperature, high pressure). Further development in processing technology has allowed for very low porosity and fine grains, significantly improving transparency and is paving the way for polycrystalline ceramics to be used in demanding optical applications. We present a method for producing highly transparent MgO doped Al2O3 using Solid State Reaction with pressure-less sintering. In order to measure the light transmission properties, we use a Ultraviolet-Visible Spectroscopy while we test the mechanical properties by using Vickers Hardness Test. It was found that the addition of MgO could suppress the exaggerate grain growth of Al2O3 ceramics. Doping with MgO could help eliminating residual pores and obtaining fine-grained Al2O3 transparent ceramics. Hardness of the Al2O3 transparent ceramics was also improved thanks to the controlling of grain growth. Bachelor of Engineering (Materials Engineering) 2017-05-09T05:49:01Z 2017-05-09T05:49:01Z 2017 Final Year Project (FYP) http://hdl.handle.net/10356/70684 en Nanyang Technological University 44 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials
spellingShingle DRNTU::Engineering::Materials
Goh, Nicholas Chung Min
Processing and characterization of transparent ceramics
description Light scattering in ceramic materials has prevented the use of polycrystalline ceramics with anisotropic optical properties in applications such as special windows worked under extream conditions (very high/low temperature, high pressure). Further development in processing technology has allowed for very low porosity and fine grains, significantly improving transparency and is paving the way for polycrystalline ceramics to be used in demanding optical applications. We present a method for producing highly transparent MgO doped Al2O3 using Solid State Reaction with pressure-less sintering. In order to measure the light transmission properties, we use a Ultraviolet-Visible Spectroscopy while we test the mechanical properties by using Vickers Hardness Test. It was found that the addition of MgO could suppress the exaggerate grain growth of Al2O3 ceramics. Doping with MgO could help eliminating residual pores and obtaining fine-grained Al2O3 transparent ceramics. Hardness of the Al2O3 transparent ceramics was also improved thanks to the controlling of grain growth.
author2 Kong Ling Bing
author_facet Kong Ling Bing
Goh, Nicholas Chung Min
format Final Year Project
author Goh, Nicholas Chung Min
author_sort Goh, Nicholas Chung Min
title Processing and characterization of transparent ceramics
title_short Processing and characterization of transparent ceramics
title_full Processing and characterization of transparent ceramics
title_fullStr Processing and characterization of transparent ceramics
title_full_unstemmed Processing and characterization of transparent ceramics
title_sort processing and characterization of transparent ceramics
publishDate 2017
url http://hdl.handle.net/10356/70684
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