基于Micro-CT的NEPE推进剂装药界面细观结构  

Mesoscopic structure of NEPE propellant grain interface based on Micro-CT technique

作　　者：郭翔[1,2] 张清杰[1] 翟鹏程[1] 庞爱民[2] 池旭辉[2] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070 [2]中国航天科技集团公司四院四十二所,襄阳441003

出　　处：《固体火箭技术》2017年第2期194-198,共5页Journal of Solid Rocket Technology

基　　金：国防预研基金项目

摘　　要：NEPE推进剂装药界面粘接问题是制约NEPE推进剂推广应用的技术瓶颈之一,急需有效的细观结构表征技术,以揭示NEPE推进剂装药界面形成机理。采用Micro-CT技术,开展了NEPE推进剂/衬层/绝热层界面细观结构研究,发现Micro-CT图像可明显区分界面各相以及各相的基体与填充物,可识别不同的固体填充物;绝热层/衬层界面存在有锯齿状的镶嵌结构的扩散层,厚度不超过10μm;推进剂与衬层之间有一定的扩散,存在明显的推进剂与衬层基体富集层,在推进剂一侧,还形成40~80μm的HMX颗粒富集层。The poor interfacial adhesion of NEPE propellant/liner/insulation is one of the technical barriers in the application of NEPE propellant, so it is urgently needed to reveal the interfacial adhesion mechanism by using effective characterization technol- ogy. In this paper, the Micro-CT technique was applied to investigate the mesoscopic structure, and the interface phases and the matrix/solid fillers can be clearly distinguished from the Micro-CT images. There is a diffusion layer with sawtooth shaped embedded structure on the interface of liner/insulation, whose depth is lower than 10 μm. An inter-diffusion was also observed between the propellant and liner, which leads to an obvious enrichment layer of the propellant and liner. Additionally, there is a HMX enrich- ment area with the size of 40 ~ 80μm on the side of NEPE propellant.

关 键 词：NEPE推进剂 粘接界面 衬层 绝热层 颗粒填料 显微CT 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]