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摘要本文深入阐述了氧化锆的晶体结构、组织性能以及应用，从根本上解释了氧化锆的相变原理。针对在应用中四方氧化锆会相变成性能不理想的单斜相这一问题，本论文自制氧化锆纤维，并设计试验，通过改变稳定剂种类以及改变掺入晶粒长大抑制剂的种类和比例来探讨对ZrO2相变的影响。通过体视显微镜初步观察晶粒大小，再进行XRD实验得到相变图，利用红外光谱仪得到红外光谱，最后进行分析，最后得出结论：以Y2O3为稳定剂比以MgO为稳定剂的晶粒要小些，Mg的纤维强度高，纤维长度长，考虑做纤维棉，Y的纤维耐温性好，考虑做纤维板；掺Al2O3的MgO和掺Al2O3的Y2O3的比例为3%时晶粒最小，掺BaO的MgO的比例为6%，掺BaO的Y2O3比例为10%时晶粒最小；掺入BaO比掺入Al2O3的抑制晶粒长大的效果更好。68160
毕业论文关键词 氧化锆纤维 MgO Y2O3 相变 Stereomicroscope XRD FT-IR
毕业设计说明书（论文）外文摘要
Title The research of Zirconia fiber Optimization of preparation technology
Abstract
This article in depth on the crystal structure, organizational performance and the application of zirconia.Explanation of the phase transition of zirconia principle fundamentally. For in the application phase tetragonal zirconia will become unsatisfactory performance monoclinic phase this problem, this paper made of zirconia fibers and experimental design, By changing the type of stabilizer mixed grain growth and changes in the types and proportions of inhibitor to explore the impact on the ZrO2 phase transformation. Over stereomicroscope preliminary observation grain size, then the phase transition diagram XRD experiments, the use of infrared spectroscopy to obtain infrared spectra, and then analysis we got the final conclusion: As a stabilizer in Y2O3 MgO as a ratio of stabilizer to be smaller grain size, Mg high fiber strength, fiber length, fiber cotton consider doing, Y fibrous good heat resistance, consider doing fiberboard; MgO and Al2O3-doped Y2O3 doping ratio of Al2O3 in the grain least 3%, the proportion of MgO-doped BaO 6% Y2O3 doped BaO in the grain is 10% minimum; And the incorporation of Al2O3doped BaO inhibit grain growth better.
Keywords Zirconia fibers MgO Y2O3 Phase Change Stereomicroscope XRD FT-IR
目 录
1 绪论 1
1.1 氧化锆及其纤维介绍 1
1.2 氧化锆相变理论 3
1.3 稳定氧化锆晶体结构 4
1.4 氧化锆的不稳定相变 7
1.5 试验内容和意义 8
2 试验部分 9
2.1 试验试剂 9
2.2 试验仪器 10
2.3 纤维制备 11
2.4 取样分析 13
3 结果讨论 16
3.1 体视显微镜分析 16
3.2 晶相组织变化 17
3.3 红外光谱分析 21
结 论 23
致 谢 24
参 考 文 献