Cover Image

Microwave sintering of zirconia-toughened alumina (ZTA)-TiO2-Cr2O3 ceramic composite: The effects on microstructure and properties

Alumina; Ceramic materials; Densification; Density (specific gravity); Fracture; Fracture toughness; Grain growth; Mechanical properties; Microstructure; Microwave heating; Microwaves; Sintered alumina; Titanium dioxide; Vickers hardness; Zirconia; Conventional heating methods; Homogeneous microstru...

Full description

Saved in:
Bibliographic Details
Main Authors: Manshor H., Abdullah E.C., Azhar A.Z.A., Sing Y.W., Ahmad Z.A.
Other Authors: 55490332600
Format: Article
Published: Elsevier Ltd 2023
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.uniten.dspace-23439
record_format dspace
spelling my.uniten.dspace-234392023-05-29T14:40:30Z Microwave sintering of zirconia-toughened alumina (ZTA)-TiO2-Cr2O3 ceramic composite: The effects on microstructure and properties Manshor H. Abdullah E.C. Azhar A.Z.A. Sing Y.W. Ahmad Z.A. 55490332600 23391987100 25958888500 12775149200 56036883500 Alumina; Ceramic materials; Densification; Density (specific gravity); Fracture; Fracture toughness; Grain growth; Mechanical properties; Microstructure; Microwave heating; Microwaves; Sintered alumina; Titanium dioxide; Vickers hardness; Zirconia; Conventional heating methods; Homogeneous microstructure; Lower sintering temperatures; Microstructural analysis; Microstructure and properties; Microwave sintering; Microwave sintering methods; Zirconia toughened alumina; Sintering This paper focuses on the development of a zirconia-toughened alumina ZTA-TiO2-Cr2O3 ceramic composite by means of microwave sintering at 2.45 GHz within the range 1200 �C�1400 �C, with a dwell time of 5�20 min. It is aimed at attaining improved microstructure and properties at a lower sintering temperature and shorter soaking time, compared to using a conventional heating method. Consequently, the effects of sintering temperature and soaking time on densification, properties and microstructural behaviour of the composite, are investigated. XRD analysis reveals that the microwave-sintered samples possess a higher crystallinity at a higher sintering temperature. Microstructural analysis confirms the uniform distribution of particles and controlled grain growth; with the lowest AGI value being 1.28 grains/?m. The sample that is microwave-sintered at 1350 �C with 10 min of soaking time achieves a high density (95.74% of the theoretical density), elevated hardness (1803.4 HV), and excellent fracture toughness (9.61 MPa m1/2), and intergranular cracks. This proves that the microwave sintering technique enhances densification, microstructural evolution and the properties of the ceramic composite at a lower temperature and shorter soaking time, compared to conventional heating. Overall, the improved mechanical properties of the microwave-sintered ceramics, compared to conventionally-sintered ceramics, are attributed to the enhanced densification and finer and more homogeneous microstructure that is achieved through the use of a microwave sintering method. The results reveal that microwave sintering is effective in improving the microstructure and density of materials, and will be useful for enhancing the mechanical properties of ZTA-TiO2-Cr2O3 ceramic composites. � 2017 Elsevier B.V. Final 2023-05-29T06:40:30Z 2023-05-29T06:40:30Z 2017 Article 10.1016/j.jallcom.2017.06.115 2-s2.0-85020789047 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85020789047&doi=10.1016%2fj.jallcom.2017.06.115&partnerID=40&md5=1884b75230f20e888ac4a6d645080bb3 https://irepository.uniten.edu.my/handle/123456789/23439 722 458 466 Elsevier Ltd Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Alumina; Ceramic materials; Densification; Density (specific gravity); Fracture; Fracture toughness; Grain growth; Mechanical properties; Microstructure; Microwave heating; Microwaves; Sintered alumina; Titanium dioxide; Vickers hardness; Zirconia; Conventional heating methods; Homogeneous microstructure; Lower sintering temperatures; Microstructural analysis; Microstructure and properties; Microwave sintering; Microwave sintering methods; Zirconia toughened alumina; Sintering
author2 55490332600
author_facet 55490332600
Manshor H.
Abdullah E.C.
Azhar A.Z.A.
Sing Y.W.
Ahmad Z.A.
format Article
author Manshor H.
Abdullah E.C.
Azhar A.Z.A.
Sing Y.W.
Ahmad Z.A.
spellingShingle Manshor H.
Abdullah E.C.
Azhar A.Z.A.
Sing Y.W.
Ahmad Z.A.
Microwave sintering of zirconia-toughened alumina (ZTA)-TiO2-Cr2O3 ceramic composite: The effects on microstructure and properties
author_sort Manshor H.
title Microwave sintering of zirconia-toughened alumina (ZTA)-TiO2-Cr2O3 ceramic composite: The effects on microstructure and properties
title_short Microwave sintering of zirconia-toughened alumina (ZTA)-TiO2-Cr2O3 ceramic composite: The effects on microstructure and properties
title_full Microwave sintering of zirconia-toughened alumina (ZTA)-TiO2-Cr2O3 ceramic composite: The effects on microstructure and properties
title_fullStr Microwave sintering of zirconia-toughened alumina (ZTA)-TiO2-Cr2O3 ceramic composite: The effects on microstructure and properties
title_full_unstemmed Microwave sintering of zirconia-toughened alumina (ZTA)-TiO2-Cr2O3 ceramic composite: The effects on microstructure and properties
title_sort microwave sintering of zirconia-toughened alumina (zta)-tio2-cr2o3 ceramic composite: the effects on microstructure and properties
publisher Elsevier Ltd
publishDate 2023
_version_ 1806424035514384384
score 13.214268

Similar Items