1. 毕业设计（论文）的内容和要求

本论文的主要内容是对氮化硅气凝胶复合材料国内外的研究现状、应用与发展进行了简要的阐述。

简述氮化硅气凝胶复合材料的结构特点、溶胶-凝胶制备工艺和应用前景。

对耐高温氮化硅气凝胶材料的制备参数及其性能表征进行了研究。

2. 参考文献

[1] X. Zhang,W. Huo,Y. Chen,Z. Hu,Y. Wang,K. Gan,J. Yang, Novel micro-spherical Si3N4 nanowire sponges from carbon-doped silica sol foams via reverse templating method[J], Am Ceram Soc. 102 (2019) 962-969. [2] 徐洁,周万城,王俊勃,苏晓磊,贺辛亥, 天线罩用多孔氮化硅陶瓷的制备[J], 功能材料. 42 (2011) 411-415. [3] 何凤梅,陈聪慧,杨景兴,黄娜,王晓叶, 多孔氮化硅高温氧化特性分析[J], 宇航材料工艺. 44 (2014) 101-106. [4] 许晓敏,刘甜甜,郭伟, 不同碳硅比稻壳对原位制备多孔Si3N4陶瓷的影响[J], 人工晶体学报. 44 (2015) 2484-2489. [5] 于方丽,白宇,杜军,王欢锐,杨建锋, 多孔氮化硅陶瓷的微观结构、力学性能和气体透气性的研究[J], 人工晶体学报. 41 (2012) 656-660. [6] W. Kang,H. Liu,J. Li,S. Hu,C. Zhou, Fabrication of size-controlled SiC/Si3N4 ceramic microspheres with enhanced extinction property[J], Ceram Int. 41 (2015) 10775-10781. [7] H. Liu,N. Wei,J. Li,H. Zhang,P. Chu, Synthesis of SiCN@TiO2 core-shell ceramic microspheres via PDCs method[J], Solid State Sci. 76 (2018) 15-19. [8] Q. Liu,F. Ye,Z. Hou,S. Liu,Y. Gao,H. Zhang, A new approach for the net-shape fabrication of porous Si3N4 bonded SiC ceramics with high strength[J], Eur Ceram Soc. 33 (2013) 2421-2427. [9] M. Meechoonuck,P. Vas-Umnuay,V. Pavarajarn, Synthesis of porous silicon nitride using silica/carbon composite derived from phenol-resorcinol-formaldehyde gel[J], Ceram Int. 42 (2016) 10879-10885. [10] Z. Omidi,A. Ghasemi,S.R. Bakhshi, Synthesis and characterization of Si3N4 wires from binary carbonaceous silica aerogels[J], Powder Technol. 252 (2014) 20-24. [11] P.M. Rewatkar,T. Taghvaee,A.M. Saeed,S. Donthula,C. Mandal,N. Chandrasekaran,T. Leventis,T.K. Shruthi,C. Sotiriou-Leventis,N. Leventis, Sturdy, Monolithic SiC and Si3N4 Aerogels from Compressed Polymer-Cross-Linked Silica Xerogel Powders[J], Chem Mater. 30 (2018) 1635-1647. [12] V. Rocher,S.M. Kelly,A.L. Hector, Silicon imidonitride aerogel exhibiting macro- and meso-dual porosity[J], Micropor Mesopor Mat. 156 (2012) 196-201. [13] Y. Sun,Z. Zhao,X. Li,H. Zhao,Z. Hu,H. Ji,T. Qi, A novel aerogels/porous Si3N4 ceramics composite with high strength and improved thermal insulation property[J], Ceram Int. 44 (2018) 5233-5237. [14] H. Yang,F. Ye,Q. Liu,Y. Gao, Microstructure and properties of the Si3N4/silica aerogel composites fabricated by the sol-gel method via ambient pressure drying[J], Mater Design. 85 (2015) 438-443. [15] H. Yang,F. Ye,Q. Liu,S. Liu,Y. Gao,L. Liu, A novel silica aerogel/porous Si3N4 composite prepared by freeze casting and sol-gel impregnation with high-performance thermal insulation and wave-transparent[J], Mater Lett. 138 (2015) 135-138. [16] 李坊森,周万城,胡汉军,罗发,朱冬梅, 氮化硅多孔陶瓷制备技术的研究进展[J], 材料导报. 22 (2008) 18-21. [17] S. Hassan,A.L. Hector,J.R. Hyde,A. Kalaji,D.C. Smith, A non-oxide sol-gel route to synthesise silicon imidonitride monolithic gels and high surface area aerogels[J], Chem Commun. (2008) 5304-5306. [18] 张雯,王红洁,张勇,金志浩, 酚醛树脂裂解法增强高气孔率多孔氮化硅陶瓷[J], 硅酸盐通报. 1 (2005) 25-28.

3. 毕业设计（论文）进程安排

2019.2.25～2019.2.28 查阅文献资料 2019.3.1～2019.3.6 拟定实验方案，撰写开题报告 2019.3.7～2019.3.31 完成初步实验工作，并开展初步测试 2019.4.1～2019.5.31 进行中期检查，完成实验和测试 2019.6.1～2019.6.20 撰写毕业论文，答辩