| Crystallization and properties of some CaO-Al2O3-SiO2 system glass-ceramics with Y2O3 addition |
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| 作者姓名： | 郑伟宏 程金树 全健 楼贤春 刘健 |
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| 作者单位： | Key Laboratory of Silicate Materials Science and Engineering, Wuhan University of Technology, Ministry of Education, Wuhan 430070, China |
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| 摘 要： | The crystallization behavior and mechanical properties of CaO-Al2O3-SiO2 （CAS） system glass-ceramics with addition of Y2O3 were investigated. The optimal sintering temperatures of all heat-treated glasses were altered and the crystallization was accelerated with Y2O3 addition, and only wollastonite as a main crystalline phase was precipitated. The volume fraction of crystalline phase and density were increased with Y2O3 addition. The results suggest that the CAS glass-ceramics would get the lowest sintering temperature and optimal microstructure with the addition of Y2O3 by 3.25 %. The bending strength has a maximum due to the oriented and interlocked wollastonite crystal, which causes crack divert or blunts to limit the further development of the flaw size and increases the surface energy of fracture.
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| 关 键 词： | CaO-Al2O3-SiO2系 玻璃陶瓷 Y2O3掺杂 添加剂 结晶 |
| 收稿时间： | 2006-04-10 |
| 修稿时间： | 2006-04-25 |
Crystallization and properties of some CaO-Al2O3-SiO2 system glass-ceramics with Y2O3 addition |
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| ZHENG Wei-hong , CHENG Jin-shu, QUAN Jian , LOU Xian-chun, LIU Jian.Crystallization and properties of some CaO-Al2O3-SiO2 system glass-ceramics with Y2O3 addition[J].Transactions of Nonferrous Metals Society of China,2006,16(B01):105-108. |
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| Authors: | ZHENG Wei-hong CHENG Jin-shu QUAN Jian LOU Xian-chun LIU Jian |
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| Affiliation: | 1. Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark;2. Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ, USA;3. Science and Technology Division, Corning Incorporated, Corning, USA;4. Institute of High-Pressure Physics, Polish Academy of Sciences, Warsaw, Poland;5. Department of Mechanical and Manufacturing Engineering, Aalborg University, Aalborg, Denmark |
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| Abstract: | The crystallization behavior and mechanical properties of CaO-Al2O3-SiO2 (CAS) system glass-ceramics with addition of Y2O3 were investigated. The optimal sintering temperatures of all heat-treated glasses were altered and the crystallization was accelerated with Y2O3 addition, and only wollastonite as a main crystalline phase was precipitated. The volume fraction of crystalline phase and density were increased with Y2O3 addition. The results suggest that the CAS glass-ceramics would get the lowest sintering temperature and optimal microstructure with the addition of Y2O3 by 3.25 %. The bending strength has a maximum due to the oriented and interlocked wollastonite crystal, which causes crack divert or blunts to limit the further development of the flaw size and increases the surface energy of fracture. |
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| Keywords: | CaO-Al2O3-SiO2 glass-ceramics Y2O3 doped crystallization |
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