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Effect of AlN addition on the reaction sintering of Al2TiO5 composites fabricated by spark plasma sintering
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Document Title
Effect of AlN addition on the reaction sintering of Al2TiO5 composites fabricated by spark plasma sintering
Author
Kitiwan M. Atong D. Endo F. Goto T.
Affiliations
Department of Physics School of Science King Mongkut抯 Institute of Technology Ladkrabang Bangkok Thailand; Devices and Systems for Energy and Environment Research Unit School of Science King Mongkut抯 Institute of Technology Ladkrabang Bangkok Thailand; National Metal and Materials Technology Center (MTEC) National Science and Technology Development Agency (NSTDA) Thailand Science Park Pathum Thani Thailand; Institute for Materials Research Tohoku University Sendai Japan; New Industry Creation Hatchery Center Tohoku University Sendai Japan; State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan China
Type
Article
Source Title
Journal of Asian Ceramic Societies
ISSN
21870764
Year
2023
Volume
11
Issue
2
Page
225-231
Open Access
All Open Access Gold
Publisher
Taylor and Francis Ltd.
DOI
10.1080/21870764.2023.2186008
Abstract
Fully dense Al2TiO5朅l2O3朤iN (ATN) composites were fabricated by reactive sintering using spark plasma sintering at 1400?C for 5 min under 100 MPa in vacuum. An equimolar ratio of Al2O3:TiO2 was used as the starting powder while the addition of 0� mol% AlN was investigated. The thermodynamic calculation indicates that the initial reaction was that of TiO2 and AlN forming TiN and Al2O3 and then the remaining TiO2 reacted with Al2O3 to produce Al2TiO5. With the increase in AlN precursor Al2TiO5 gradually decreased while Al2O3 and TiN increased. The lattice parameters of Al2TiO5 were enlarged with AlN addition implying the incorporation of N atoms in the Al2TiO5 unit cell. The addition of AlN effectively produced fully densified bodies with small grain size and microcrack-free which therefore enhanced the mechanical properties of ATN composites. At 36 mol% AlN addition the composite shows Vickers hardness and fracture toughness of 16.26 ? 1.61 GPa and 5.20 ? 0.46 MPa.m1/2 respectively. ? 2023 The Author(s). Published by Informa UK Limited trading as Taylor & Francis Group on behalf of The Korean Ceramic Society and The Ceramic Society of Japan.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
CC BY
Rights
Authors
Publication Source
WOS