| 题名 | 掺钕磷酸盐激光玻璃的电导率测试及引入铜和铁的影响 |
| 作者 | 汪韬 |
| 文献子类 | 硕士 |
| 导师 | 陈伟 |
| 关键词 | 掺钕磷酸盐激光玻璃 Nd-doped phosphate laser glass 电导率 electrical conductivity 铜 copper 铁 iron |
| 其他题名 | Test and Analysis on Electrical Conductivity of Phosphate Laser Glass Doped by Copper, Iron and Neodymium |
| 英文摘要 | 电导率作为玻璃的一种基本性质，能在一定程度上反映玻璃的基础结构和离子在玻璃中的存在状态。本论文以掺钕磷酸盐激光玻璃的电导率测试为基础，重点研究了几种掺钕磷酸盐激光玻璃的电导率-温度关系，以及铜、铁等杂质对N31型掺钕磷酸盐激光玻璃电导率的影响。本论文分为六部分： 第一章为绪论，主要介绍了磷酸盐玻璃，特别是掺钕磷酸盐激光玻璃的性质和应用，并综述了磷酸盐玻璃的电导性质和电导率的主要影响因素。 第二章介绍了电导率和电导率测试的理论基础、实验方法以及实验中用到的样品。本章内容主要包括玻璃中可能存在的电导机制、电导率测试的方法、样品的准备，并讨论了电导率测试时的一些误差因素，此外还对其他测试方法进行了简单介绍。 第三章对LZT-Meter 1100测试电导率的可靠性进行了验证。首先对同一个N31掺钕磷酸盐激光玻璃样品进行了多次升温电导率测试，以验证测试重复性；然后测试了不同截面积、不同厚度以及不同表面处理的N31玻璃的升温电导率，以研究样品截面积、厚度和碳电极对测试的影响。结果表明电导率测试的重复性良好，碳电极有效地减小了接触电阻，并且样品截面积和厚度对测试结果影响很小，此外还发现热处理会使N31玻璃的电导率增大。 第四章主要研究了N31、N41、NAP2、NAP4四种掺钕磷酸盐激光玻璃的电导率-温度关系。本章首先测试了N31、N41、NAP2、NAP4玻璃的升温电导率，比较了这四种玻璃电导率的区别，讨论了其组分上的区别所造成的影响；然后测试了N31、N41玻璃的常温电导率，并测试其电导率随施加电压时间的变化，验证其导电类型；为了研究高能射线对激光玻璃的缺陷、结构等方面的影响，还测试了X射线辐照后N31、N41玻璃的升温电导率，并与辐照前进行比较；本章最后叙述了以表面电阻相关知识设计的大尺寸磷酸盐激光玻璃的表面电阻测试组件。 第五章详细研究了铜、铁等杂质的引入对N31磷酸盐激光玻璃的影响。为了研究铜离子的影响，首先测试了单掺钕、钕铜共掺和单掺铜的N31玻璃的升温电导率，然后测试了这3个样品在416℃恒温时电导率随热处理时间的变化，最后对热处理后的单掺钕和钕铜共掺玻璃重新进行升温电导率测试。结果表明铜离子的引入减小了N31玻璃的低温区的离子电导率，但高温区的电导率偏离了Arrhenius线性关系，而热处理过程会使高温区的电导率减小；分别从离子电导率和电子电导率两方面分析并讨论了出现这些现象的可能原因。为了研究铁离子的影响，首先测试了单掺钕、钕铁共掺和单掺铁的N31玻璃的升温电导率，结果表明铁离子掺入前后N31玻璃的表观电导率几乎没有变化。然后结合拉曼光谱讨论了铁离子掺入对玻璃结构的影响，从而解释电导率的变化。此外，本章还在对比上述样品电导率的过程中讨论了钕离子的引入对N31玻璃电导率的影响。 第六章是对全文实验结果的总结，并指出了研究中的不足之处和需要解决的问题。; As one of the basic properties of glass, electrical conductivity can be used to reflect the basic structure of glass and the condition of ions in glass. In this thesis, based on the electrical conductivity measurement of Nd-doped phosphate laser glass, the electrical conductivity properties of several types of Nd-doped phosphate laser glass and the effect of the introduction of copper and iron ions on the electrical conductivity of N31 Nd-doped phosphate laser glass are mainly studied. This thesis is divided into six parts: In Chapter 1, the properties and applications of phosphate glass, especially Nd-doped phosphate laser glass, are introduced. Moreover, the main factors affecting the electrical conductivity of phosphate glass are reviewed. In Chapter 2, the basic theories of electrical conductivity and its measurement, the testing methods and the samples used in the experiments are introduced. This chapter mainly includes the electrical conduction mechanism in glass, the method of electrical conductivity measurement and the sample preparation. Moreover, some error factors of electrical conductivity measurement are discussed. In addition, the other test methods are also introduced. In Chapter 3, the reliability of LZT-Meter 1100 is verified. Firstly, to verify the repeatability, the electrical conductivity of one N31 Nd-doped phosphate laser glass sample is measured several times. Secondly, to study the influence of sectional area, thickness and carbon electrode of samples, the electrical conductivities of N31 glasses with different sectional area, thickness and surface treatment are measured. The results show that improved method of electrical conductivity measurement has a good repeatability and the carbon electrode effectively reduces the contact resistance. Meanwhile, the sectional area and thickness of samples have little effect on the test results. In addition, it is found that heat treatment will increase the electrical conductivity of N31 glass. In Chapter 4, the electrical conductivity properties of N31, N41, NAP2 and NAP4 Nd-doped phosphate laser glass are analyzed. Firstly, the conductivties of N31, N41, NAP2 and NAP4 glass are measured. The differences of electrical conductivity between these four types of glass are compared, and the influences of differences in composition on electrical conductivity are discussed. Secondly, The electrical conductivities of N31 and N41 glass at room temperature and the relation between electrical conductivity and test time are mearsured, which can verify the conduction type.Then, in order to study the influence of high energy radiation on the defects and structure of laser glass, the electrical conductivies of N31 and N41 glass after X-ray irradiation are measured, which are compared with the electrical conductivies before irradiation. Finally, the surface resistance test component of large size phosphate laser glass designed with surface resistance knowledge is described. In Chapter 5, the effects of the introduction of copper and iron on N31 Nd-doped phosphate laser glass are studied in detail. In order to study the influence of cooper ions, firstly, the conductivities of Nd-doped, Nd-Cu co-doped and Cu-doped N31 glass are measured. Secondly, the relation between electrical conductivity and heat treatment time of these samples at 416℃ is measured. Finally, the electrical conductivity measurements of Nd-doped and Nd-Cu co-doped samples after heat treatment are carried out. The results show that the introduction of copper decreases the ion conductivity of N31 glass. However, deciation from the Arrhenius linear relation is observed at high temperature, and the heat treatment process can make high temperature conductivity decrease. The possible causes of these phenomena are analyzed and discussed respectively from ionic conductivity and electronic conductivity. In order to study the influence of iron ions, the conductivities of Nd-doped, Nd-Fe co-doped and Fe-doped N31 glass are measured. The results show that the apparent electrical conductivity of iron doped N31 glass has almost no change contrast with N31 glass without iron. Then, the influence of iron ions on the structure of glass is discussed by Raman spectroscopy, and the change of electrical conductivity is explained. In addition, the influence of neodymium ions on the electrical conductivity of N31 glass is also discussed when comparing the electrical conductivities of the samples mentioned above. In Chapter 6, all results of present work are concluded. Besides, the shortage of this research is mentioned and the issues that need further studying are pointed out. |
| 学科主题 | 材料学 |
| 内容类型 | 学位论文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/30968]  |
| 专题 | 中国科学院上海光学精密机械研究所 |
| 作者单位 | 中国科学院上海光学精密机械研究所 |
| 推荐引用方式 GB/T 7714 | 汪韬. 掺钕磷酸盐激光玻璃的电导率测试及引入铜和铁的影响[D]. |
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