Effect of CaO-TiO<sub>2</sub>-SiO<sub>2</sub> on the Microstructure and Mechanical Properties of Ceramic Corundum Abrasives
Ceramic corundum abrasives were prepared using pseudo-boehmite as a raw material via the sol-gel method. Additives can significantly change the microscopic morphology of abrasives and improve mechanical properties. When 2 wt% CaO-TiO<sub>2</sub>-SiO<sub>2</sub> with a molar r...
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MDPI AG
2023-04-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/11/5/187 |
| _version_ | 1827741158610042880 |
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| author | Quanbao Zhao Zhihong Li Yumei Zhu |
| author_facet | Quanbao Zhao Zhihong Li Yumei Zhu |
| author_sort | Quanbao Zhao |
| collection | DOAJ |
| description | Ceramic corundum abrasives were prepared using pseudo-boehmite as a raw material via the sol-gel method. Additives can significantly change the microscopic morphology of abrasives and improve mechanical properties. When 2 wt% CaO-TiO<sub>2</sub>-SiO<sub>2</sub> with a molar ratio of 3:4:9 was added, samples with the best morphology and mechanical properties were obtained. Single-particle compressive strength, density, Vickers hardness, and average grain size were 51.45 N, 3.94 g·cm<sup>−3</sup>, 16.43 GPa, and 0.98 μm, respectively. We compared the same additive system with abrasives prepared by ball milling, and found that ball milling was beneficial for obtaining denser and smaller grain size abrasives. On the other hand, abrasives obtained without ball milling had relatively higher single-particle compressive strength. Additionally, the additives are non-precious metal oxides, which can reduce the cost of the synthesis process. In addition, there has been discussion of the connection between microstructure and mechanical characteristics. |
| first_indexed | 2024-03-11T03:38:40Z |
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| id | doaj.art-934318b7927c4f18bfe44b079e0d509b |
| institution | Directory Open Access Journal |
| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-03-11T03:38:40Z |
| publishDate | 2023-04-01 |
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| series | Inorganics |
| spelling | doaj.art-934318b7927c4f18bfe44b079e0d509b2023-11-18T01:48:47ZengMDPI AGInorganics2304-67402023-04-0111518710.3390/inorganics11050187Effect of CaO-TiO<sub>2</sub>-SiO<sub>2</sub> on the Microstructure and Mechanical Properties of Ceramic Corundum AbrasivesQuanbao Zhao0Zhihong Li1Yumei Zhu2Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaKey Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaKey Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, ChinaCeramic corundum abrasives were prepared using pseudo-boehmite as a raw material via the sol-gel method. Additives can significantly change the microscopic morphology of abrasives and improve mechanical properties. When 2 wt% CaO-TiO<sub>2</sub>-SiO<sub>2</sub> with a molar ratio of 3:4:9 was added, samples with the best morphology and mechanical properties were obtained. Single-particle compressive strength, density, Vickers hardness, and average grain size were 51.45 N, 3.94 g·cm<sup>−3</sup>, 16.43 GPa, and 0.98 μm, respectively. We compared the same additive system with abrasives prepared by ball milling, and found that ball milling was beneficial for obtaining denser and smaller grain size abrasives. On the other hand, abrasives obtained without ball milling had relatively higher single-particle compressive strength. Additionally, the additives are non-precious metal oxides, which can reduce the cost of the synthesis process. In addition, there has been discussion of the connection between microstructure and mechanical characteristics.https://www.mdpi.com/2304-6740/11/5/187ceramic corundumsol-gel processadditivesstrength |
| spellingShingle | Quanbao Zhao Zhihong Li Yumei Zhu Effect of CaO-TiO<sub>2</sub>-SiO<sub>2</sub> on the Microstructure and Mechanical Properties of Ceramic Corundum Abrasives Inorganics ceramic corundum sol-gel process additives strength |
| title | Effect of CaO-TiO<sub>2</sub>-SiO<sub>2</sub> on the Microstructure and Mechanical Properties of Ceramic Corundum Abrasives |
| title_full | Effect of CaO-TiO<sub>2</sub>-SiO<sub>2</sub> on the Microstructure and Mechanical Properties of Ceramic Corundum Abrasives |
| title_fullStr | Effect of CaO-TiO<sub>2</sub>-SiO<sub>2</sub> on the Microstructure and Mechanical Properties of Ceramic Corundum Abrasives |
| title_full_unstemmed | Effect of CaO-TiO<sub>2</sub>-SiO<sub>2</sub> on the Microstructure and Mechanical Properties of Ceramic Corundum Abrasives |
| title_short | Effect of CaO-TiO<sub>2</sub>-SiO<sub>2</sub> on the Microstructure and Mechanical Properties of Ceramic Corundum Abrasives |
| title_sort | effect of cao tio sub 2 sub sio sub 2 sub on the microstructure and mechanical properties of ceramic corundum abrasives |
| topic | ceramic corundum sol-gel process additives strength |
| url | https://www.mdpi.com/2304-6740/11/5/187 |
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