材料科学与工程毕业论文

毕业设计（论文）论文题目： 反应条件对 sol-gel 合成锆英石的影响英文题目： Influence of the ReactionCondition on Preparation of ZrSiO4by Sol-gel学 院： 化学生物与材料科学学院专 业： 材料科学与工程学 号： 07057125学生姓名： 罗秋锋指导老师： 刘晓东、罗太安二 0 一一年六月精品文档---下载后可任意编辑摘 要 g/cm3。产物的化学组成以 ZrO2和 SiO2等组成为主；凝胶后处理过程中经过氨水洗涤的样品其晶体组成主要以为锆英石（ZrSiO4）和斜锆石（ZrO2）为主，其中含有部分方石英（SiO2），而未经氨水洗涤的样品，其晶体为单一的单斜锆石（ZrO2）。关键字：锆英石、溶胶-凝胶法、反应条件精品文档---下载后可任意编辑ABSTRACTThe safe disposition ofhigh level radioactive wasteis aglobal problemfor the nuclear development, since the technical is very difficult, the research cycle is longer，and it refers to different subjects includinggeology,chemistry, materials, and others.As the firstartificialbarrier of deep geologicaldisposal ofHLW, thestability ofimmobilization has important influence on disposal repository. This paper synthesizes zircon bySol-Gel; we dicuss Sol-Gelreaction conditions how to influence thepreparationofprecursor;Testing the physical and chemical properties of Zirconsamples and use XRD, EPMA to analysise the differentphase composition and mineral composition of several groups ofzirconsamples.Theexperimental conditions for zircon precursoris: amount of water30mL, pH2～3. The phase of sample washed by ammonia is form of baddeleyite (ZrO2)and zircon (ZrSiO4) , the other phase （SiO2 ）.Another without washing only includes baddeleyite (ZrO2). The main compositions of two samples are mainly composed with ZrO2 and SiO2,and ZrO2 is the main content..Key words:Zircon、Sol-Gel、Reaction condition目 录第一章绪论 1锆英石的结构及性能 1 1.2 锆英石的主要应用 1 1.3 锆英石的主要合成方法 1 1.3.1 固相法 1 1.3.2 沉淀法 1 1.3.3 水...