GH3128表面喷涂复合涂层的性能研究  

Study on Properties of Spraying Composite Coatings on GH3128 Surface

作　　者：赵晋超 杨来侠[1] 高伟[1] 高扬 ZHAO Jinchao;YANG Laixia;GAO Wei;GAO Yang(School of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]西安科技大学机械工程学院,陕西西安710054

出　　处：《热加工工艺》2025年第6期55-59,66,共6页Hot Working Technology

基　　金：陕西省教育科学“十四五”规划2021年度项目(SGH21Y0522)。

摘　　要：针对武器装备在高温环境中的兼容隐身需求,在GH3128上依次喷涂了粘结层、热障陶瓷层、匹配层、损耗层等6层陶瓷涂层,利用XRD、SEM、EDS对涂层的微观组织和物相进行分析;通过自主搭建的石英灯平板加热系统测试了涂层1050℃下的隔热性能;采用红外发射率测试系统测试了900℃下的红外发射率;利用有限元软件HFSS对涂层周期结构的吸波性能进行了仿真分析。结果表明:涂层各层之间结合良好,没有明显裂纹;涂层与基体整体隔热效果在250℃左右;涂层在900℃时,3~5μm红外发射率为0.446,8~14μm红外发射率为0.583;三维周期单元的边长、高度及基底的高度对吸波性能有显著影响。以上结论可以为耐高温红外雷达兼容隐身涂层的设计和改进提供参考。Aiming at the requirement of compatible stealth of weapons and equipment in high temperature environment,six ceramic coatings including bonding layer,thermal barrier ceramic layer,matching layer and loss layer,were sprayed on GH3128 in turn.The micro-structure and phase of the coatings were analyzed by XRD,SEM and EDS.The thermal insulation performance of the coatings at 1050℃ was tested by the self-built quartz lamp flat heating system.The infrared emitting ability at 900℃ were tested by infrared emitting ability testing system.The finite element software HFSS was used to simulate and analyze the absorbing performance of the periodic structure of the coatings.The results show that the layers are well bonded without obvious cracks.The overall thermal insulation effect of the coatings and the substrate is about 250℃.The infrared emissivity of the coatings is 0.446 at 3-5μm at 900℃ and 0.583 at 8-14μm.The side length,height and height of the three-dimensional periodic element have significant effects on the absorbing performance.The above conclusions can provide reference for the design and improvement of compatible stealth coatings for high temperature infrared radar.

关 键 词：隔热性能 红外发射率 周期结构 吸波 仿真分析 

分 类 号：TG174.4[金属学及工艺—金属表面处理]