Microstructure, Mechanical and Thermal Properties of ZTA/Al<sub>2</sub>TiO<sub>5</sub> Ceramic Composites
Zirconia-toughened alumina (ZTA)/Al<sub>2</sub>TiO<sub>5</sub> composites were prepared via a sol–gel route. The prepared samples were uniaxially pressed and pressurelessly sintered at 1650–1700 °C for 1 h. The microstructure, densification, and X-ray diffraction patterns of...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Ceramics |
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| Online Access: | https://www.mdpi.com/2571-6131/6/4/121 |
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| author | A. M. Hassan Hamada Elsayed M. Awaad A. M. Saleh S. M. Naga |
| author_facet | A. M. Hassan Hamada Elsayed M. Awaad A. M. Saleh S. M. Naga |
| author_sort | A. M. Hassan |
| collection | DOAJ |
| description | Zirconia-toughened alumina (ZTA)/Al<sub>2</sub>TiO<sub>5</sub> composites were prepared via a sol–gel route. The prepared samples were uniaxially pressed and pressurelessly sintered at 1650–1700 °C for 1 h. The microstructure, densification, and X-ray diffraction patterns of the sintered ZTA/Al<sub>2</sub>TiO<sub>5</sub> composites were investigated, and their mechanical properties, thermal coefficient, and shock resistance were characterized. The addition of Al<sub>2</sub>TiO<sub>5</sub> hindered the grain growth of the alumina particles and enhanced the relative density, Vickers hardness, and bending strength of the composites compared with pure ZTA samples. The fracture toughness was improved by 19% upon the addition of 40 wt% Al<sub>2</sub>TiO<sub>5</sub>. Moreover, increasing the Al<sub>2</sub>TiO<sub>5</sub> content resulted in an improvement in the thermal shock resistance. |
| first_indexed | 2024-03-08T20:54:44Z |
| format | Article |
| id | doaj.art-70ce973335f34875ad11f8fbeecfbb89 |
| institution | Directory Open Access Journal |
| issn | 2571-6131 |
| language | English |
| last_indexed | 2024-03-08T20:54:44Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Ceramics |
| spelling | doaj.art-70ce973335f34875ad11f8fbeecfbb892023-12-22T13:59:49ZengMDPI AGCeramics2571-61312023-10-01641977199010.3390/ceramics6040121Microstructure, Mechanical and Thermal Properties of ZTA/Al<sub>2</sub>TiO<sub>5</sub> Ceramic CompositesA. M. Hassan0Hamada Elsayed1M. Awaad2A. M. Saleh3S. M. Naga4Materials Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, EgyptDepartment of Industrial Engineering, Università Degli Studi di Padova, 35131 Padova, ItalyRefractories Ceramics and Building Materials Department, National Research Centre, El-Bohous Str., Cairo 12622, EgyptMaterials Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, EgyptRefractories Ceramics and Building Materials Department, National Research Centre, El-Bohous Str., Cairo 12622, EgyptZirconia-toughened alumina (ZTA)/Al<sub>2</sub>TiO<sub>5</sub> composites were prepared via a sol–gel route. The prepared samples were uniaxially pressed and pressurelessly sintered at 1650–1700 °C for 1 h. The microstructure, densification, and X-ray diffraction patterns of the sintered ZTA/Al<sub>2</sub>TiO<sub>5</sub> composites were investigated, and their mechanical properties, thermal coefficient, and shock resistance were characterized. The addition of Al<sub>2</sub>TiO<sub>5</sub> hindered the grain growth of the alumina particles and enhanced the relative density, Vickers hardness, and bending strength of the composites compared with pure ZTA samples. The fracture toughness was improved by 19% upon the addition of 40 wt% Al<sub>2</sub>TiO<sub>5</sub>. Moreover, increasing the Al<sub>2</sub>TiO<sub>5</sub> content resulted in an improvement in the thermal shock resistance.https://www.mdpi.com/2571-6131/6/4/121ZTAaluminum titanitefracture toughnessthermal shock resistance |
| spellingShingle | A. M. Hassan Hamada Elsayed M. Awaad A. M. Saleh S. M. Naga Microstructure, Mechanical and Thermal Properties of ZTA/Al<sub>2</sub>TiO<sub>5</sub> Ceramic Composites Ceramics ZTA aluminum titanite fracture toughness thermal shock resistance |
| title | Microstructure, Mechanical and Thermal Properties of ZTA/Al<sub>2</sub>TiO<sub>5</sub> Ceramic Composites |
| title_full | Microstructure, Mechanical and Thermal Properties of ZTA/Al<sub>2</sub>TiO<sub>5</sub> Ceramic Composites |
| title_fullStr | Microstructure, Mechanical and Thermal Properties of ZTA/Al<sub>2</sub>TiO<sub>5</sub> Ceramic Composites |
| title_full_unstemmed | Microstructure, Mechanical and Thermal Properties of ZTA/Al<sub>2</sub>TiO<sub>5</sub> Ceramic Composites |
| title_short | Microstructure, Mechanical and Thermal Properties of ZTA/Al<sub>2</sub>TiO<sub>5</sub> Ceramic Composites |
| title_sort | microstructure mechanical and thermal properties of zta al sub 2 sub tio sub 5 sub ceramic composites |
| topic | ZTA aluminum titanite fracture toughness thermal shock resistance |
| url | https://www.mdpi.com/2571-6131/6/4/121 |
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