Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders

Si3N4–TiNcomposites were successfully fabricated via planetary ball milling of 70 mass% Si3N4 and 30 mass% Tipowders, followed by sparkplasmasintering (SPS) at 1250–1350 °C. The sintering mechanism for SPS was a hybrid of dissolution–reprecipitation and viscous flow. The electrical resistivity decre...

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Main Authors: Ahmad, Norhayati, Sueyoshi, Hidekazu
Format: Article
Published: Elsevier B.V. 2010
Subjects:
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author Ahmad, Norhayati
Sueyoshi, Hidekazu
author_facet Ahmad, Norhayati
Sueyoshi, Hidekazu
author_sort Ahmad, Norhayati
collection ePrints
description Si3N4–TiNcomposites were successfully fabricated via planetary ball milling of 70 mass% Si3N4 and 30 mass% Tipowders, followed by sparkplasmasintering (SPS) at 1250–1350 °C. The sintering mechanism for SPS was a hybrid of dissolution–reprecipitation and viscous flow. The electrical resistivity decreased with increasing sintering temperature up to a minimum at 1250 °C and then increased with the increasing sintering temperature. The composites prepared by SPS at 1250–1350 °C could be easily machined by electrical discharge machining. Composite prepared by SPS at 1300 °C showed a high hardness (17.78 GPa) and a good machinability.
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spelling utm.eprints-265922018-10-31T12:30:46Z http://eprints.utm.my/26592/ Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders Ahmad, Norhayati Sueyoshi, Hidekazu TJ Mechanical engineering and machinery Si3N4–TiNcomposites were successfully fabricated via planetary ball milling of 70 mass% Si3N4 and 30 mass% Tipowders, followed by sparkplasmasintering (SPS) at 1250–1350 °C. The sintering mechanism for SPS was a hybrid of dissolution–reprecipitation and viscous flow. The electrical resistivity decreased with increasing sintering temperature up to a minimum at 1250 °C and then increased with the increasing sintering temperature. The composites prepared by SPS at 1250–1350 °C could be easily machined by electrical discharge machining. Composite prepared by SPS at 1300 °C showed a high hardness (17.78 GPa) and a good machinability. Elsevier B.V. 2010 Article PeerReviewed Ahmad, Norhayati and Sueyoshi, Hidekazu (2010) Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders. Ceramics International, 36 (2). 491 -496. ISSN 0272-8842 http://dx.doi.org/10.1016/j.ceramint.2009.09.029 DOI:10.1016/j.ceramint.2009.09.029
spellingShingle TJ Mechanical engineering and machinery
Ahmad, Norhayati
Sueyoshi, Hidekazu
Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders
title Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders
title_full Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders
title_fullStr Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders
title_full_unstemmed Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders
title_short Properties of Si3N4-TiN composites fabricated by spark plasma sintering by using a mixture of Si3N4 and Ti powders
title_sort properties of si3n4 tin composites fabricated by spark plasma sintering by using a mixture of si3n4 and ti powders
topic TJ Mechanical engineering and machinery
work_keys_str_mv AT ahmadnorhayati propertiesofsi3n4tincompositesfabricatedbysparkplasmasinteringbyusingamixtureofsi3n4andtipowders
AT sueyoshihidekazu propertiesofsi3n4tincompositesfabricatedbysparkplasmasinteringbyusingamixtureofsi3n4andtipowders