等离子喷涂Cr/Al2O3吸波涂层的微观结构调控与介电性能研究

项目名称： 等离子喷涂Cr/Al2O3吸波涂层的微观结构调控与介电性能研究

项目编号： No.51302018

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 周亮

作者单位： 长安大学

项目金额： 25万元

中文摘要： 涂覆在武器装备表面的雷达吸波涂层能够有效降低目标的雷达散射截面，特别适用于现役和在研武器装备的隐身需求。性能优异的吸波涂层不仅需要满足厚度薄、质量轻、频带宽和吸收强，还需具有较好的耐候性和粘结性。基于金属/陶瓷涂层兼有金属的韧性和陶瓷耐高温的特点，提出以等离子喷涂技术制备Cr/Al2O3耐高温吸波涂层的思路。本项目拟从初级颗粒尺寸和复合颗粒特征两方面出发，通过关键等离子喷涂参数(CPSP)的调整优化，建立和发展不同微观结构Cr/Al2O3涂层的可控制备方法，探索具有特定组织结构涂层形成的主要控制因素；研究涂层微观结构、组分含量与涂层介电性能的关系，发现和揭示Cr/Al2O3涂层介电性能的调控机制，提出介电性能可控的金属/陶瓷涂层制备方法和途径。

中文关键词： 介电性能；微观结构；等离子喷涂；Cr/Al2O3 涂层；

英文摘要： Radar absorbing coatings coated on the surface of the weapons and equipment can effectively reduce the radar cross section of the target, especially for stealth demands of the weapons and equipment in duty and researching. The radar absorbing coatings with excellent performance not only need to satisfy thin thickness, light density, brand frequency and strong absorption characteristics, but also need to have good weather resistance and adhesion. Based on the characteristics of metal/ceramic coating with toughness of metal and high-temperature resistance of ceramic, the preparation of high-temperature resistant Cr/Al2O3 coating using plasma spray technology was raised in this project. This project intends to start from the aspects of the primary particle size and composite particle characteristics, through the optimization of critical plasma spray parameters(CPSP), establish and develop the controllable preparation methods of Cr/Al2O3 coating with different microstructure, explore the main controlling factors of specific microstructure of the coatings; the relationships of microstructure, composition of the coating and its dielectric properties are investigated, revealing the regulatory mechanism of the dielectric properties of Cr/Al2O3 coating, proposing the preparation methods of metal/ceramic coating with cont

英文关键词： Dielectric Properties；Microstructure；Plasma Spraying；Cr/Al2O3 Coatings；