可控磨粒织构金刚石固结工具高效抛光单晶蓝宝石曲面的基础研究

项目名称： 可控磨粒织构金刚石固结工具高效抛光单晶蓝宝石曲面的基础研究

项目编号： No.51275230

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 机械、仪表工业

项目作者： 卢文壮

作者单位： 南京航空航天大学

项目金额： 80万元

中文摘要： 课题紧密围绕蓝宝石应用中所面临的迫切需要解决的关键问题，创新性地提出采用磨粒可控的织构金刚石固结抛光工具实现单晶蓝宝石曲面的高效抛光。项目拟通过可控磨粒织构金刚石固结抛光工具设计，织构金刚石磨粒的选择性生长，单晶蓝宝石可控磨粒金刚石抛光的材料去除机制，单晶蓝宝石曲面的高效抛光等方面的基础研究，解决可控磨粒织构金刚石固结抛光工具性能协调，晶粒可控织构金刚石制备的多元物理场构建，单晶蓝宝石曲面抛光增效，单晶蓝宝石抛光表面残余应力及损伤控制等方面的关键技术。解决单晶蓝宝石曲面加工的可控磨粒织构金刚石固结抛光工具的设计准则，金刚石磨粒的晶粒形态、生长取向、晶粒大小演变规律，可控磨粒织构金刚石抛光加工表面形成机制等方面的关键科学问题。形成单晶蓝宝石头罩高效抛光的新技术，提升我国硬脆材料的光整加工水平，为蓝宝石材料在国防装备中的应用提供技术支撑。

中文关键词： CVD金刚石；抛光；蓝宝石；织构；

英文摘要： Owing to its excellent overall properties, sapphire single crystal continues to prevail in durable window/dome materials. But the low efficiency of fine surface polishing in its applications may exceed 80% of total cost. The project is focus on the mechanism and key technology for single crystal sapphire dome high efficient polishing. The research work includes design of the fixed orientation crystal diamond abrasive polishing tool, deposition of orientation crystal diamond film on the polishing insert, mechanism of sapphire material machining during polishing process using a fixed orientation crystal diamond abrasive polishing tool, high efficiency technology polishing a single crystal sapphire curved surface. The key technology in this project includes making a good property fixed orientation crystal diamond abrasive polishing tool, realizing the property multi-field control to deposit the texture diamond, promoting the efficiency of single crystal sapphire curved surfaces polishing, controlling the residual stress and damage on the polished sapphire surfaces. The design law of a fixed orientation crystal diamond abrasive polishing tool will be determined in the project. The rule relating to topography, texture, grain size of diamond crystal will be discovered. The chemical and mechanical reaction forming fine

英文关键词： CVD diamond；polishing；single crystal sapphire；texture；