| 微晶玻璃的组成及热处理制度与热膨胀系数关系的研究 |
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| 引用本文： | 常鹰,李溪滨.微晶玻璃的组成及热处理制度与热膨胀系数关系的研究[J].玻璃与搪瓷,2006,34(2):9-14. |
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| 作者姓名： | 常鹰 李溪滨 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室,湖南,长沙,410083 |
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| 摘 要： | 采用传统的熔体冷却法制得Li2O-A l2O3-SiO2系统的基础玻璃。利用DTA制定了相应的热处理制度,测定了玻璃热处理前后的热膨胀系数,并利用XRD研究了经热处理后的微晶玻璃的晶体相组成。结果表明:具有复合晶核剂TiO2 ZrO2和采用二步热处理制度所得的微晶玻璃热膨胀系数更小,且随着二步热处理制度温度的升高,微晶玻璃热膨胀系数更小,相应的玻璃结构也越致密。
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| 关 键 词： | Li2O-Al2O3-SiO2系统 微晶玻璃 热处理制度 热膨胀系数 |
| 文章编号： | 1000-2871（2006）02-0009-06 |
| 收稿时间： | 12 21 2004 12:00AM |
| 修稿时间： | 2004-12-21 |
Research on the Relationship between Thermal Expansion Coefficients and Constitution of Glass-Ceramics and Heat-Treatment Methods |
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| CHANG Ying,LI Xi-bin.Research on the Relationship between Thermal Expansion Coefficients and Constitution of Glass-Ceramics and Heat-Treatment Methods[J].Glass & Enamel,2006,34(2):9-14. |
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| Authors: | CHANG Ying LI Xi-bin |
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| Affiliation: | State Key Laboratory for Powder Metallurgy of Central South University, Changsha 410083, China |
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| Abstract: | The glasses based on Li_2O-Al_2O_3-SiO_2 system have been prepared by conventional melt quenching technology.The heat-treatment process was determined by using DTA,and thermal expansion coefficients of glasses before and after heat-treatment were measured.The crystal constituents of glass-ceramics after heat-treatment were studied by XRD.The result shows that the glass-ceramics with smaller thermal expansion coefficients can be obtained by addition of complex nucleation agent TiO_2 ZrO_2 and adapting two-step-heat-treatment process.The thermal expansion coefficient of glass-ceramics decreases and the structure is denser with increasing temperature of two-step-heattreatment process. |
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| Keywords: | Li_2O-Al_2O_3-SiO_2 system glass-ceramics heat-treatment process thermal expansion coefficient |
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