纳米晶复合陶瓷材料抗辐照损伤机理研究

项目名称： 纳米晶复合陶瓷材料抗辐照损伤机理研究

项目编号： No.11275141

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 杨兵

作者单位： 武汉大学

项目金额： 80万元

中文摘要： 纳米晶复合陶瓷材料辐照损伤是近年来国内外离子与固体相互作用研究的前沿，但目前对纳米晶陶瓷材料优越抗辐照性能的机理缺乏深入的研究。本项目采用电弧离子镀技术制备TiSiN纳米晶复合陶瓷材料。采用加速器和注入机进行不同离子种类、注入剂量和注入能量的离子辐照损伤试验。采用掠入射X射线衍射研究辐照前后材料相结构的变化；采用高分辨透射电镜系统研究纳米晶材料辐照后缺陷形貌、原子扩散以及晶界和晶内的高分辨原子相;采用RBS技术系统研究辐照参数对其成分的影响。在此基础上利用加速器-电镜联机装置原位观测纳米晶复合陶瓷材料在辐照条件下缺陷萌生、晶粒生长以及晶界迁移等非平衡过程,从纳米尺度上揭示辐照过程对材料微观结构影响的精细过程。结合理论分析，深入探索纳米晶复合材料抗辐照性能影响因素的微观机制和相关物理规律，为新型抗辐照纳米晶复合陶瓷材料的开发提供科学依据。

中文关键词： 纳米晶陶瓷涂层；微结构；力学性能；辐照损伤；抗辐照机理

英文摘要： Radiation damage of nanocomposite ceramic material is the research frontiers in the fields of ionic interactions with solids in recent years. However, there lacks enough research on the mechanism of radiation damage of nano composite ceramic materials. In this project,TiSiN nanocomposite ceramic materials will be prepared by using arc ion plating technology.The radiation experiments will be carried out by a tandetron accelerator and an implanter with different ion species and at different implantation dose and energy. Grazing incidence X-ray diffraction will be used to investigate the phase structure variation of pre- and post-irradiated materials; HRTEM will be used to probe the defect pattern，atomic diffusion and high-resolution image of intragranular and grain boundaries of post-irradiated nanocrystalline materials. Rutherford Backscattering Spectroscopy (RBS) will be used to study the effect of radiation parameters on the composition of the materials systematically. Based on above research results, the accelerator-TEM interface system will be used to perform in situ observation of non-equilibrium processes of defect generation, grain growth, and grain boundary migration revealing the fine process of radiation effects on the materials microstructure on the nanoscale. Combined with theoretical analysis, the m

英文关键词： Nanocrystal ceramic coating；Microstructure；Mechanical properties；Irradiation；Anti-irradiation mechanism