摘要
金属材料的二次电子发射是空间微波部件发生微放电效应的重要机制,微放电效应是航天器有效载荷射频功率增大的限制因素。本实验通过在金属银表面构造大尺度聚苯乙烯(PS)微球阵列制备微米尺度的银膜陷阱结构,实现对二次电子发射的抑制。重点研究了PS微球自组装方法对自组装效果的影响及镀银方式对银膜陷阱结构形貌的影响,并对利用PS微球构造的银膜陷阱结构的二次电子发射性能进行研究。结果表明:蒸发沉积法中的单基片法可有效实现PS微球的自组装,电化学沉积法镀银可获得银膜陷阱结构,且该银膜陷阱结构的二次电子发射系数最大值从2.2降低至1.6。
Secondary electronic emission on metal is the cause of multipactor effect,which is a limitation of the space payload RF power increase. In this paper,micrometer-scale trap structure was constructed through large scale polystyrene array to suppress secondary electron emission. A PS microspheres self-assembly method was studied,the trap structure was presented,and the secondary emission characteristics were tested. The results show that the trap structure silver film is prepared based on self-assemble of PS microspheres. Its structure can decrease the maximum of secondary electron yield（SEY） from 2.2 to 1.6.
作者
胡天存
崔万照
鲍艳
马建中
曹猛
Hu Tiancun Cui Wanzhao Bao Yan Ma Jianzhong Cao Meng(Xi＇an Jiaotong University, Xi＇an 710049, China National Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology, Xi＇an 710100, China Shaanxi University of Science ＆ Technology, Xi＇an 710021, China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2017年第9期2702-2707,共6页
Rare Metal Materials and Engineering
基金
空间微波技术重点实验室基金资助(9140C530101130C53013
9140C530101140C53231)
关键词
微放电
二次电子发射
聚苯乙烯
陷阱结构
multipactor
secondary electronic emission
polystyrene
trap structures
