β-硅灰石的CaO-Al2O3-SiO2系微晶玻璃研究.doc

摘要微晶玻璃是材料科学发展上的一项最近的进展，它是通过玻璃在加热过程中进行控制晶化而制得的一种含有大量微晶体的多晶固体材料。作为建筑装饰材料，美观、高雅，集中了玻璃、陶瓷、石材的性能优点。 本课题以主晶相为β-硅灰石的CaO-Al2O3-SiO2系微晶玻璃为研究对象，利用烧结法制备微晶玻璃。采用不同的晶化热处理制度，研究不同的核化温度和晶化温度对微晶玻璃的显微结构和性能的影响。主要测试了微晶玻璃的机械性能、显微形貌和X - 射线衍射分析吸水率、密度以及酸碱度，通过对实验结果进行分析，确定其主晶相为硅灰石(CaSiO3) ,晶粒形貌为棒状、柱状 ,晶粒大小为 0.2～0.3μm, 晶相含量为35%～40%。讨论了微晶玻璃性能的影响得出如何提高微晶玻璃 关键词：CaO-Al2O3-SiO2系微晶玻璃；烧结法；热处理；性能 AbstractGlass-ceramics is one kind of materials developed recently in the material fields. It is a kind of poly-crystal solid material that is made by crystallization of glass by means of heat treatment. As constructional and decorational material, it is graceful and beautiful which is the goodness of glass and ceramic as well as stone. In this paper, the subject takes the Ca0-A1203-SiO2 system glass-ceramics of whose main crystallization phase is β-wollastonite as the object of study, prepares the glass-ceramics by sintering. Uses the different crystallization heat treatment system, studies the influence of different coring temperature and the crystallization temperature on the glass-ceramics microstructure and the performance. The glass-ceramics mechanics performance, the micro appearance and the power spectrum analysis, and XRD, the water-absorption, the density as well as the potential of hydrogen are mainly tested. Through carries on the analysis to the experimental result, The result s show that dominant crystalline phase is wollastonite (CaSiO3),and the shape of the wollastonite crystals is neadle-like and their sizes are 0.2 - 0.3 um,as well as the content of the crystals is within 35 % - 40 %. Discusses the influence of different factors on the properties of glass-ceramics was discussed andt how to improve the bending strength and density of high pH and hardness properties of glass-ceramics. Key words: CaO-Al2O3-SiO2 system Glass-ceramics, sintering, heat treatment, performance 目 录Abstract II 目 录 III 第1章 绪 论 1 1.1 课题的目的及意义 1 1.2 微晶玻璃的发展历史 1 1.3 微晶玻璃在材料科学中的作用 3 1.4 制备工艺 4 1.5 应用与前景 5 第2章 烧结法微晶玻璃的制