| Na2O-CaO-SiO2系透明微晶玻璃制备及其微观结构 |
| |
| 引用本文： | 梅宇钊,陈兴军,王克强,刘学峰,罗志伟,卢安贤. Na2O-CaO-SiO2系透明微晶玻璃制备及其微观结构[J]. 中国有色金属学报, 2012, 0(7): 1991-1997 |
| |
| 作者姓名： | 梅宇钊 陈兴军 王克强 刘学峰 罗志伟 卢安贤 |
| |
| 作者单位： | 1. 中南大学材料科学与工程学院,长沙410083
2. 中南大学有色金属材料科学与工程教育部重点实验室,长沙410083 |
| |
| 基金项目： | 国家自然科学基金资助项目(51172286) |
| |
| 摘 要： | 制备了Yb3+掺杂的Na2O-CaO-SiO2系高结晶度、透明微晶玻璃。用差热分析(DSC)初步确定基础玻璃的核化及晶化温度范围,用X射线衍射(XRD)测定微晶玻璃析出晶相,用扫描电镜(SEM)研究微晶玻璃的微观结构。结果表明:组成为53SiO2-30CaO-17Na2O(摩尔分数,%)的基础玻璃经热处理析出了Na4Ca4Si6O18晶相;合适热处理制度为:595℃核化5 h,730℃晶化1 h;所制备的微晶玻璃析晶度高,晶粒尺寸约100μm,微晶玻璃仍具有较高的透明度。
|
| 关 键 词： | 钠钙硅酸盐 玻璃陶瓷 热处理制度 析晶度 微观结构 |
Preparation and microstructure of Na2O-CaO-SiO2 transparent glass-ceramics |
| |
| MEI Yu-zhao,CHEN Xing-jun,WANG Ke-qiang,LIU Xue-feng,LUO Zhi-wei,LU An-xian. Preparation and microstructure of Na2O-CaO-SiO2 transparent glass-ceramics[J]. The Chinese Journal of Nonferrous Metals, 2012, 0(7): 1991-1997 |
| |
| Authors: | MEI Yu-zhao CHEN Xing-jun WANG Ke-qiang LIU Xue-feng LUO Zhi-wei LU An-xian |
| |
| Affiliation: | 1,2 (1.School of Materials Science and Engineering,Central South University,Changsha 410083,China;2.Key Laboratory of Non-ferrous Metal Materials Science and Engineering,Ministry of Education, Central South University,Changsha 410083,China) |
| |
| Abstract: | The high crystalline and transparent Yb3+-doped Na2O-CaO-SiO2 glass-ceramics were prepared.The nucleation and crystallization temperature ranges,crystalline phases in the glass-ceramics and microstructures of the glass-ceramics were observed by DSC curve of the precursor glass,X-ray diffraction and scanning electron microscopy,respectively.The results show that the crystalline phase of Na4Ca4Si6O18 is obtained by heat treatment of precursor glass with composition of 53SiO2-30CaO-17Na2O(mole fraction,%).And the proper heat treatment schedule is glass nucleated at 595 ℃ for 5 h and crystallized at 730 ℃ for 1 h.Furthermore,the glass-ceramic with grain sizes of about 100 μm is still transparent after crystallization almost completed. |
| |
| Keywords: | sodium calcium silicate glass-ceramics heat treatment schedule volume fraction of crystalline phase microstructure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
