SiC一维纳米材料的量产化连续制备、生长机理及理论模拟研究

项目名称： SiC一维纳米材料的量产化连续制备、生长机理及理论模拟研究

项目编号： No.51272117

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 李镇江

作者单位： 青岛科技大学

项目金额： 80万元

中文摘要： SiC一维纳米材料的研究已引起了广泛关注。然而，如何实现其量产化连续制备及相关基础理论研究，在国内外仍属空白。本项目利用自主研制的连续生产式智能可控气氛炉，创新性地开展在较大反应空间内量产化连续制备SiC一维纳米材及其相关基础理论研究课题。主要研究内容：1）根据气氛炉的构造特点，建立数值模拟的理论模型，运用fluent软件获得在较大反应空间即物料盒内的气流场和温度场分布云图，以此为指导，对物料盒进行优化改进，为保证获得品质均一的大量SiC一维纳米材料提供理论指导；2）系统研究各工艺参数对连续制备SiC一维纳米材料的产量、形貌和品质等的影响规律，获得优选工艺参数，并从介观生长热、动力学及晶体生长理论出发，建立其生长的理论模型；3）利用Gauss和Material Studio等软件，模拟不同条件下SiC一维纳米材料的微观生长过程和生长机理，从理论上探讨工艺参数对产物生长速度和形态的影响规律。

中文关键词： SiC一维纳米材料；量产化连续制备；生长机理；理论模拟；

英文摘要： Recently,the study on the SiC one-dimensional nanomaterials have attracted extensive attention. However, how to achieve the continuous preparation of mass production and the study of the related basic theories are still in blank states at home and abroad. In this project, continuous preparation of massly SiC one-dimensional materials is innovatively carried out in a larger reaction space by an atmosphere controllable smart furnace which is developed independently, and the associated basic theories are studied. Main research contents: 1) According to the structural features of the atmosphere furnace, the flow field and temperature field contours in the larger reaction space (Material box) are simulated by fluent software, and then establish the numerical theoretical model. To use the above simulated results as guidance, the material box is optimized and improved which will ensure that uniform SiC one-dimensional materials are acquired; 2) The effects of various process parameters on the production, morphology and quality of the continuous preparation of SiC one-dimensional nanomaterials are systematic studied, and then optimal process parameters are obtained. According to growth of mesoscopic thermodynamics, dynamics and crystal growth theories, the growth model is established in theory. 3) The microscopic growth

英文关键词： SiC one-dimensional nanomaterials；the mass-production continuous preparation；growth mechanism；theoretical modeling；