Effect of the La2O3 Addition on Thermal, Microstructure and Mechanical Properties of Mullite–Zirconia Composites
Mullite–zirconia composites were prepared using lanthanum oxide (La2O3) additive which three different mole ratio by the reaction sintering (RS) route of alumina, kaolinite and zircon. Starting materials were planetary milled, shaped into pellets and bars and sintered in the temperature range of 145...
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| Format: | Article |
| Language: | English |
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Iran University of Science & Technology
2019-12-01
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| Series: | Iranian Journal of Materials Science and Engineering |
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| Online Access: | http://ijmse.iust.ac.ir/article-1-1297-en.html |
| _version_ | 1811212762293993472 |
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| author | H. Aydın |
| author_facet | H. Aydın |
| author_sort | H. Aydın |
| collection | DOAJ |
| description | Mullite–zirconia composites were prepared using lanthanum oxide (La2O3) additive which three different mole ratio by the reaction sintering (RS) route of alumina, kaolinite and zircon. Starting materials were planetary milled, shaped into pellets and bars and sintered in the temperature range of 1450–1550 0C with 5 h soaking at peak temperature. In this work, the mullite-zirconia composites were characterized by thermal expansion coefficient, physical, microstructures and mechanical properties. The XRD method were employed for determining the crystalline phase composition of these composites. Microstructure of the composites was examined by SEM. ZrO2 takes part in both the intergranular as well as intragranular positions. However, intragranular zirconias are much smaller compared to intergranular zirconias. |
| first_indexed | 2024-04-12T05:35:48Z |
| format | Article |
| id | doaj.art-9c86835a9094443cba3d4ae3a55bfb00 |
| institution | Directory Open Access Journal |
| issn | 1735-0808 2383-3882 |
| language | English |
| last_indexed | 2024-04-12T05:35:48Z |
| publishDate | 2019-12-01 |
| publisher | Iran University of Science & Technology |
| record_format | Article |
| series | Iranian Journal of Materials Science and Engineering |
| spelling | doaj.art-9c86835a9094443cba3d4ae3a55bfb002022-12-22T03:45:53ZengIran University of Science & TechnologyIranian Journal of Materials Science and Engineering1735-08082383-38822019-12-011641019Effect of the La2O3 Addition on Thermal, Microstructure and Mechanical Properties of Mullite–Zirconia CompositesH. Aydın0 Mullite–zirconia composites were prepared using lanthanum oxide (La2O3) additive which three different mole ratio by the reaction sintering (RS) route of alumina, kaolinite and zircon. Starting materials were planetary milled, shaped into pellets and bars and sintered in the temperature range of 1450–1550 0C with 5 h soaking at peak temperature. In this work, the mullite-zirconia composites were characterized by thermal expansion coefficient, physical, microstructures and mechanical properties. The XRD method were employed for determining the crystalline phase composition of these composites. Microstructure of the composites was examined by SEM. ZrO2 takes part in both the intergranular as well as intragranular positions. However, intragranular zirconias are much smaller compared to intergranular zirconias.http://ijmse.iust.ac.ir/article-1-1297-en.htmlmullite-zirconia compositesthermal expansion coefficientreaction sinteringmechanical properties |
| spellingShingle | H. Aydın Effect of the La2O3 Addition on Thermal, Microstructure and Mechanical Properties of Mullite–Zirconia Composites Iranian Journal of Materials Science and Engineering mullite-zirconia composites thermal expansion coefficient reaction sintering mechanical properties |
| title | Effect of the La2O3 Addition on Thermal, Microstructure and Mechanical Properties of Mullite–Zirconia Composites |
| title_full | Effect of the La2O3 Addition on Thermal, Microstructure and Mechanical Properties of Mullite–Zirconia Composites |
| title_fullStr | Effect of the La2O3 Addition on Thermal, Microstructure and Mechanical Properties of Mullite–Zirconia Composites |
| title_full_unstemmed | Effect of the La2O3 Addition on Thermal, Microstructure and Mechanical Properties of Mullite–Zirconia Composites |
| title_short | Effect of the La2O3 Addition on Thermal, Microstructure and Mechanical Properties of Mullite–Zirconia Composites |
| title_sort | effect of the la2o3 addition on thermal microstructure and mechanical properties of mullite zirconia composites |
| topic | mullite-zirconia composites thermal expansion coefficient reaction sintering mechanical properties |
| url | http://ijmse.iust.ac.ir/article-1-1297-en.html |
| work_keys_str_mv | AT haydın effectofthela2o3additiononthermalmicrostructureandmechanicalpropertiesofmullitezirconiacomposites |