| TiO_2及Cr_2O_3对镍渣微晶玻璃结晶过程影响及结晶动力学(英文) |
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| 引用本文： | 马明生,倪文,王亚利,李轩,刘凤梅,王中杰.TiO_2及Cr_2O_3对镍渣微晶玻璃结晶过程影响及结晶动力学(英文)[J].硅酸盐学报,2009,37(4). |
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| 作者姓名： | 马明生 倪文 王亚利 李轩 刘凤梅 王中杰 |
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| 作者单位： | 北京科技大学土木与环境工程学院,矿山高效开采与安全教育部重点实验室,北京,100083 |
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| 摘 要： | 介绍了利用镍弃渣制备微晶玻璃的工艺过程.通过热分析确定了基础玻璃的热处理工艺.用X射线衍射和扫描电镜研究了成核剂TiO2,Cr2O3对基础玻璃结晶的影响.用修正的Jonhson-Mehl-Avrami公式分别计算了各基础玻璃样品的结晶活化能Ea和动力学参数k(Tp),并利用Augis-Bennett公式计算了各样品的晶化指数n.对于同时加入5%TiO2(质量分数,下同)和2%Cr2O3的基础玻璃,其结晶活化能为349.63 kJ/mol,k(Tp)为0.322,晶化指数为3.8.所得样品的结晶相为普通辉石--Ca(Mg,Al,Ti,Cr)(Al,Si)2O6,其断裂强度为130.65MPa,Vickexa硬度为8.31GPa.
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| 关 键 词： | 微晶玻璃 镍渣 成核剂 结晶动力学 |
CRYSTALLIZATION BEHAVIOR AND KINETICS OF TiO_2 AND Cr_2O_3 DOPED GLASS CERAMICS PRODUCED FROM NICKEL RESIDUE |
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| MA Mingsheng,NI Wen,WANG Yali,LI Xuan,LIU Fengmei,WANG Zhongjie.CRYSTALLIZATION BEHAVIOR AND KINETICS OF TiO_2 AND Cr_2O_3 DOPED GLASS CERAMICS PRODUCED FROM NICKEL RESIDUE[J].Journal of The Chinese Ceramic Society,2009,37(4). |
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| Authors: | MA Mingsheng NI Wen WANG Yali LI Xuan LIU Fengmei WANG Zhongjie |
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| Affiliation: | Key Laboratory of High-Efficiency Mining and Safety of Metal Mines of the Ministry of Education;College of Civil and Environmental Science and Engineering;University of Science and Technology Beijing;Beijing 100083;China |
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| Abstract: | A laboratory preparation process of glass ceramics from nickel residue was introduced. The effects of various nucleating agents,such as TiO2 and Cr2O3,on the crystallization and mechanical properties were investigated. Controlled heat treatment processes were carried out on the basis of differential scanning calorimetric measurements. The mineral phase and microstructure of glass ceramics were analyzed by X-ray diffraction and scanning electron microscopy. The crystallization kinetic parameter,k(Tp) ,and ac... |
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| Keywords: | glass ceramics nickel residue nucleating agent crystallization kinetics |
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