气悬浮技术制备磁性CaO-SiO2体系及其相关物理特性研究

摘要:Fe2O3-CaO-SiO2微晶玻璃具有良好的磁性、生物活性、生物相容性等特性，是一种典型的功能玻璃材料。在本文中，我们通过先进的无容器悬浮技术，经过工艺优化，合成了一系列xFe2O3-CaO-SiO2球体颗粒样品，其中（x=0，0.1，0.2，0.3，0.4，0.5，0.6，0.7，0.8，0.9，1）。在此基础上，对其制备工艺、物相、热分析、铁磁性等性能进行了研究。52632

首先，XRD分析表明，当x小于0.7时，制备的球体颗粒玻璃中没有明显的衍射峰，基本都是非晶态，所以在此成分范围内，本方法得到了都是纯玻璃相，没有明显的微晶相生成；随着Fe2O3含量的增加，当x大于0.7时，所制备的样品中开始出现衍射峰，其中主晶相为Ca3Si2O7和Fe3O4，另外还有Fe2O3、CaSiO3 、CaFeSiO6等晶相。这说明Fe2O3-CaO-SiO2体系中，随着Fe2O3含量的增加，促进了结晶相的产生，形成了铁磁性微晶玻璃。通过热分析数据，我们研究了Fe2O3-CaO-SiO2体系的玻璃转化温度和结晶温度随Fe2O3含量变化的影响规律。通过磁性测试分析，随着Fe2O3含量的增多，玻璃的铁磁性逐渐增强。

毕业论文关键词： Fe2O3-CaO-SiO2；微晶玻璃；无容器悬浮

Synthesis of magnetic CaO-SiO2 system utilize containerless levitation technology and research of its related physical properties

Abstract: Fe2O3-CaO-SiO2 glass ceramics with good magnetic properties, biological activity, biocompatibility and other characteristics, is a typical feature of glass materials. In this paper, we through advanced containerless levitation technology, after process optimization, synthesized a series of xFe2O3-CaO-SiO2 sphere particle samples, which (x= 0，0.1，0.2，0.3，0.4，0.5，0.6，0.7，0.8，0.9，1). On the basis of this, the preparation process, phase, thermal analysis, ferromagnetic properties were studied.

First, XRD analysis shows that when the x is less than 0.7, there is no obvious diffraction peak in the spherical particles, So in this composition range, the method is made of pure glass phase, and there is no obvious crystal phase formation; With the increase of Fe2O3 content, when the X is greater than 0.7, the prepared samples began to appear diffraction peaks, the main crystal phase was Ca3Si2O7 and Fe3O4, and the other crystal phases were Fe2O3, CaSiO3 and CaFeSiO6. This shows that the Fe2O3-CaO-SiO2 system, with the increase of the content of Fe2O3, promotes the formation of the crystalline phase, and the formation of ferromagnetic glass ceramics. Through the thermal analysis data, we studied the influence of glass transition temperature and crystallization temperature of Fe2O3-CaO-SiO2 system with the change of Fe2O3 content. Through the analysis of magnetic testing, with the increase of Fe2O3 content, the ferromagnetic properties of the glass were gradually increased.

Keywords: Fe2O3-CaO-SiO2；glass-ceramics；Containerless levitation

1 绪论 1

1.1 微晶玻璃概述 1

1.1.1 定义 1

1.1.2 微晶玻璃的种类 2

1.1.3 Fe2O3-CaO-SiO2微晶玻璃 2

1.1.4 Fe2O3-CaO-SiO2铁磁性微晶玻璃的应用 4

1.1.5 Fe2O3-CaO-SiO2微晶玻璃的制备 4

1.2 选题的意义和目的 6

1.3 研究内容和研究目标 6

2 实验部分 7

2.1实验方法 7

2.1.1 气悬浮无容器技术简介 7

2.1.2 气悬浮无容器技术工作原理气悬浮技术制备磁性CaO-SiO2体系及其相关物理特性研究:http://www.751com.cn/cailiao/lunwen_56596.html