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Effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness

International Conference on X-Rays and Related Techniques in Research and Industry (ICXRI 2010) jointly organized by Universiti Malaysia Perlis (UniMAP) and X-Ray Application Malaysia Society (XAPP), 9th - 10th June 2010 at Aseania Resort Langkawi, Malaysia.

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Bibliographic Details
Main Authors: Ahmad Zahirani, Ahmad Azhar, Foo, Tai Kong, Hasmaliza, Mohamad, Mani Maran, Ratnam, Zainal Arifin, Ahmad
Other Authors: mmaran@eng.usm.my
Format: Working Paper
Language:English
Published: Universiti Malaysia Perlis 2010
Subjects:
Microstructure
ZTA
Cutting insert
Machining
MgO
International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI)
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/9016
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spelling my.unimap-90162010-08-23T07:15:20Z Effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness Ahmad Zahirani, Ahmad Azhar Foo, Tai Kong Hasmaliza, Mohamad Mani Maran, Ratnam Zainal Arifin, Ahmad mmaran@eng.usm.my zainal@eng.usm.my ahmad.zahirani@gmail.com tkfoo86@hotmail.com Microstructure ZTA Cutting insert Machining MgO International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI) International Conference on X-Rays and Related Techniques in Research and Industry (ICXRI 2010) jointly organized by Universiti Malaysia Perlis (UniMAP) and X-Ray Application Malaysia Society (XAPP), 9th - 10th June 2010 at Aseania Resort Langkawi, Malaysia. Vickers hardness of zirconia toughened alumina added MgO with different composition and particle size has been studied. 5 different size of magnesium oxide particle at different composition (0.5 wt % to 0.9 wt %) were studied in this experiment. Each batch of composition was mixed, uniaxially pressed into 13 mm pellets and sintered at 1600 oC for 4 hours in pressureless conditions. Analysis of Vickers hardness and microstructural observation has been carried out. Microstructural observation showed that the addition of magnesium oxide greatly affected zirconia toughened alumina microstructure. Smaller Al2O3 grain size is observed with the presence of MgO thus improving its mechanical properties such as hardness. Results of Vickers hardness increased linearly with addition of MgO until a certain composition. Each particle size of MgO addition show different composition is needed to reach the optimum Vickers hardness, depending on the particle size. The increase of hardness of the cutting insert is mainly contributed by small sized Al2O3 grains due to the microstructure pinning effect introduced by MgO. Maximum Vickers hardness achieved in this experiment is 1710 Hv, obtained at 0.7 wt% MgO with 0.15 μm particle size. 2010-08-23T07:15:20Z 2010-08-23T07:15:20Z 2010-06-09 Working Paper p.128-132 978-967-5760-02-0 http://hdl.handle.net/123456789/9016 en Proceedings of the International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI) 2010 Universiti Malaysia Perlis School of Materials Engineering & School of Environmental Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Microstructure
ZTA
Cutting insert
Machining
MgO
International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI)
spellingShingle Microstructure
ZTA
Cutting insert
Machining
MgO
International Conference on X-Rays & Related Techniques in Research & Industry (ICXRI)
Ahmad Zahirani, Ahmad Azhar
Foo, Tai Kong
Hasmaliza, Mohamad
Mani Maran, Ratnam
Zainal Arifin, Ahmad
Effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness
description International Conference on X-Rays and Related Techniques in Research and Industry (ICXRI 2010) jointly organized by Universiti Malaysia Perlis (UniMAP) and X-Ray Application Malaysia Society (XAPP), 9th - 10th June 2010 at Aseania Resort Langkawi, Malaysia.
author2 mmaran@eng.usm.my
author_facet mmaran@eng.usm.my
Ahmad Zahirani, Ahmad Azhar
Foo, Tai Kong
Hasmaliza, Mohamad
Mani Maran, Ratnam
Zainal Arifin, Ahmad
format Working Paper
author Ahmad Zahirani, Ahmad Azhar
Foo, Tai Kong
Hasmaliza, Mohamad
Mani Maran, Ratnam
Zainal Arifin, Ahmad
author_sort Ahmad Zahirani, Ahmad Azhar
title Effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness
title_short Effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness
title_full Effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness
title_fullStr Effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness
title_full_unstemmed Effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness
title_sort effect of particle sizes of magnesium oxide on zirconia toughened alumina vickers hardness
publisher Universiti Malaysia Perlis
publishDate 2010
url http://dspace.unimap.edu.my/xmlui/handle/123456789/9016
_version_ 1643789351028523008
score 13.214268

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