1. 毕业设计（论文）的内容和要求

为防止收集极热流影响高频管体的正常工作，需要在收集极与管体之间引入三明治的隔热结构。

外层为金属层，中间为陶瓷层。

陶瓷层的作用主要起隔热。

2. 参考文献

[1] 王元洪. 稀土六铝酸盐热障涂层材料的制备及其热物理性能研究[D]. 哈尔滨: 哈尔滨工业大学, 2009. [2] R. Gadow, M. Lischka. Lanthanum Hexaaluminate---Novel Thermal Barrier Coatings for Gas Turbine Applications---materials and Process Development.[J]. Surface and Coatings Technology,2002,(151-152):392-399. [3] Cao X, Vasscn R. Tietzb F, et al. New Double-Ceramic-Layer Thermal Barrier Coatings Based on Zirconia-Rare Earth Composite Oxides.[J]. Journal of the European Society,2006,26(3):247 [4] M. Belmonte. Advanced Ceramic Materials for High Temperature Applications.[J]. Advanced Engineering Materials,2006,(8):692-703. [5] 周宏明,易丹青,钟华. 稀土复合氧化物陶瓷热导率理论及其热物性能.[J]. 材料导报,2008,22(7):26-30. [6] 黄亮亮,孟惠民,陈龙. 磁铅石结构六铝酸盐热障涂层的研究现状.[J]. 材料工程,2013 (12):92-99. [7] David R. Clarke. Materials Selection Guidelines for Low Thermal Conductivity Thermal Barrier Coatings.[J]. Suface and Coatings Technology,2003,(163-164):67-74. [8] P.G. Klemens, M. Gell. Thermal Conductivity of Thermal Barrier Coatings.[J]. Materials Science and Engineering,1998,(A245):143-149. [9] X.Q. Cao, R. Vassen, D. Stoever. Ceramic Materials for Thermal Barrier Boatings.[J]. Journal of the European Ceramic Society,2004,(24):1-10. [10] Dongming Zhu,Robert A. Miller. Development of Advanced Low Conductivity Thermal Barrier Coatings.[J]. Int. J. Appl. Ceram. Technol.,2004,1(1):86-94. [11] Xiaoyun Xie, Hongbo Guo, et al. Lanthanum-Titanium-Aluminum Oxide:A Novel Thermal Barrier Coating Material for Application at 1300℃.[J]. Journal of the European Society,2011,(31):1677-1683. [12] Jie Wu, Xuzheng Wei, et al. Low-Thermal-Conductivity Rare-Earth Zirconates for Potential Thermal-Barrier-Coating Applications.[J]. J. Am. Ceram.,2002,85(12):3031-3035. [13] W. Beele, G. Marijnissen, A. van Lieshout. The Evolution of Thermal Barrier Coating-status and Upcoming for Today's Key Issues.[J]. Surface and Coating Technology,1999,(120-121):61-67 [14] Robert Vassen, Xueqiang Cao, et al. Zirconates as New Materials for Thermal Barrier Coatings.[J]. J. Am. Ceram. Soc.,2000,83(8):2023-2028. [15] K.A. Khor, Y.W. Gu. Thermal Properties of Plasma-sprayed Functionally Graded Thermal Barrier Coatings.[J]. Thin Solid Films,2000,(372):104-113. [16] Sung Pyul Choi, John W. Hutchinson, A.G. Evans. Delamination of Multilayer Thermal Barrier Coatings.[J]. Mechanics of Materials,1999,(31):431-447. [17] K.W. Schlichting, N.P. Padture, E.H. Jordan, M Gell. Failure Modes in Plasma-Sprayed Thermal Barrier Coatings.[J]. Materials Science and Engineering,2003,(A342):120-130. [18] Amol D. Jadhav, Nitin P. Padture, et al. Low-Thermal-Conductivity-Sprayed Thermal Barrier Coatings with Engineered Microstructures.[J]. Acta Materialia,2006,(54):3343-3349. [19] 项建英，陈树海等. 热障涂层陶瓷材料La2(Zr0.7Ce0.3)2O7的制备和性能.[N].北京科技大学学报，2012,34（3）. [20] 梁明德，于继平等. 高温热障涂层陶瓷层材料研究.[J]. 热喷涂技术,2013,5(2):1-9

3. 毕业设计（论文）进程安排

起讫日期 设计（论文）各阶段工作内容 2015. 12．14- 2016. 01.08 回顾学习陶瓷材料工艺学等相关课程,并查阅相关资料 2016．01．09- 2016. 01.16 写开题报告 2016．01．17- 2016．02.21 寒假期间，修改开题报告，并继续查阅文献 2016．02.22- 2016．03.13 专业实习，实习期间，巩固 文献阅读。

利用零星时间做实验 2016． 03．14- 2016．05.17 实验与测试 2016．05．18- 2016．05．31 撰写论文和修改论文 2016．06．01- 2016．06.12 论文定稿与答辩