Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite

This research is focused on assessing the feasibility of the innovative microwave sintering technology for fabricating iron – chromium composites via powder metallurgy route. The microwave sintered composites were compared with their conventionally sintered counterparts in terms of physical and m...

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Main Author:	Marina, Marzuki
Format:	Thesis
Language:	English
Subjects:	Microwave sintering Microwave sintered composites Composites Iron–chromium Powder metallurgy Metal matrix composites
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/42992/1/P.1-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/42992/2/Full%20Text.pdf
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id	my-unimap-42992
record_format	uketd_dc
spelling	my-unimap-429922016-09-22T07:56:51Z Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite Marina, Marzuki Mohd Zamzuri Mohammad Zain Dr. Mohd Asri Selamat Dr. Mohd Nazree Derman This research is focused on assessing the feasibility of the innovative microwave sintering technology for fabricating iron – chromium composites via powder metallurgy route. The microwave sintered composites were compared with their conventionally sintered counterparts in terms of physical and mechanical properties (micro Vickers hardness and compressive strength). Microwave sintering is proved feasible to consolidate the composite. The result also revealed that the microwave sintered iron chromium composites possess improved density, micro hardness and compressive strength compared to the conventionally sintered composites. Process evaluation also revealed that microwave assisted sintering can lead to reduction of 70% of sintering time when compared to conventional sintering. Another aims of this research is to study the effect adding varying weight fraction of yttria reinforcement to the iron chromium composites. For this purpose iron-chromium composites is reinforced with 5, 10, 15 and 20 wt.% of the ceramic particulates. From the study it is observed that the mechanical properties of microwave sintered iron – chromium composites improved with the addition of 5 wt.% ceramic content. For the conventional sintered composites, highest micro hardness and compressive strength were obtained from the 10 wt.% reinforced composites.The highest hardness value is given by microwave sintered composite. Other physical properties such as density was decreased as the reinforcement content increased. This is due to the increasing presence of porosity in the composites. However, microwave sintered composites exhibit better density relative to theoretical density and densification behaviour. Universiti Malaysia Perlis (UniMAP) 2013 Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/42992 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/42992/1/P.1-24.pdf c3189d00c3516f57c60c13dc87d1e67c http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/42992/2/Full%20Text.pdf a622b5cefe3ec8edf38e639e9bbfce01 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/42992/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Microwave sintering Microwave sintered composites Composites Iron–chromium Powder metallurgy Metal matrix composites School of Manufacturing Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Mohd Zamzuri Mohammad Zain Dr. Mohd Asri Selamat Dr. Mohd Nazree Derman
topic	Microwave sintering Microwave sintered composites Composites Iron–chromium Powder metallurgy Metal matrix composites
spellingShingle	Microwave sintering Microwave sintered composites Composites Iron–chromium Powder metallurgy Metal matrix composites Marina, Marzuki Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite
description	This research is focused on assessing the feasibility of the innovative microwave sintering technology for fabricating iron – chromium composites via powder metallurgy route. The microwave sintered composites were compared with their conventionally sintered counterparts in terms of physical and mechanical properties (micro Vickers hardness and compressive strength). Microwave sintering is proved feasible to consolidate the composite. The result also revealed that the microwave sintered iron chromium composites possess improved density, micro hardness and compressive strength compared to the conventionally sintered composites. Process evaluation also revealed that microwave assisted sintering can lead to reduction of 70% of sintering time when compared to conventional sintering. Another aims of this research is to study the effect adding varying weight fraction of yttria reinforcement to the iron chromium composites. For this purpose iron-chromium composites is reinforced with 5, 10, 15 and 20 wt.% of the ceramic particulates. From the study it is observed that the mechanical properties of microwave sintered iron – chromium composites improved with the addition of 5 wt.% ceramic content. For the conventional sintered composites, highest micro hardness and compressive strength were obtained from the 10 wt.% reinforced composites.The highest hardness value is given by microwave sintered composite. Other physical properties such as density was decreased as the reinforcement content increased. This is due to the increasing presence of porosity in the composites. However, microwave sintered composites exhibit better density relative to theoretical density and densification behaviour.
format	Thesis
author	Marina, Marzuki
author_facet	Marina, Marzuki
author_sort	Marina, Marzuki
title	Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite
title_short	Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite
title_full	Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite
title_fullStr	Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite
title_full_unstemmed	Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite
title_sort	fabrication and characterization of microwave sintered pm fe-cr-y2o3 composite
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Manufacturing Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/42992/1/P.1-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/42992/2/Full%20Text.pdf
_version_	1747836820733820928

Fabrication and characterization of microwave sintered PM Fe-Cr-Y2O3 composite

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