带有防咬死铜镀层的标准螺纹紧固件放气率测试  

Test of Outgassing Rates of Threaded Fasteners with Copper Anti-seize Coating

作　　者：卯鑫 冯思庆 刘鹏 彭学兵 吴欢 MAO Xin;FENG Si-qing;LIU Peng;PENG Xue-bing;WU Huan(Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;Hefei Key Electrical Physical Equipment Manufacturing Co.,Ltd.,Hefei 230088,China)

机构地区：[1]中国科学院合肥物质科学研究院等离子体物理研究所,安徽合肥230031 [2]中国科学技术大学,安徽合肥230026 [3]合肥科烨电物理设备制造有限公司,安徽合肥230088

出　　处：《真空》2024年第4期80-84,共5页Vacuum

基　　金：中国科学院青年创新促进会项目偏滤器强化传热技术研究(Y15YZ51293)。

摘　　要：铜镀层是防止聚变堆运行时真空室内标准螺纹紧固件咬死的主要手段之一。针对带有铜镀层标准螺纹紧固件在高真空下的放气现象,本文简要介绍了铜镀层工艺及麻点缺陷的解决方法,采用小孔流导法测试了其放气率,分析了铜镀层及环境温度等对放气率的影响。结果表明:脱附气体由氢、水、氮气和CO_(2)组成;含氢放气率未达到要求,这与铜镀层工艺、放气率测试环境及测试时间等因素有关,需对试验影响因素加以控制,以达到聚变堆真空室内材料的放气率要求。Copper coating is one of the main means to solve the anti-seize problem of threaded fasteners in vacuum vessel during the running of fusion reactor.This work briefly introduces the coating copper procedure and the solution to pitting-attacks on the copper coating.Meanwhile,to satisfy the high vacuum requirement,the orifice conductance method was used to test the outgassing rates of threaded fasteners with copper coating.The impact of copper coating,environmental temperature,and other factors on the material outgassing rate was analyzed in detail.The results show that the desorption gas is composed of hydrogen,water,nitrogen,CO_(2),and the contained hydrogen rate does not meet the relevant requirements.This is bound up with coating copper process,test environment,test time and so on.It is necessary to control the test influential factors to achieve the anticipated outgassing rate requirements of material in vacuum vessel of fusion reactor.

关 键 词：标准螺纹紧固件 咬死 电镀铜 放气率 

分 类 号：TB74[一般工业技术—材料科学与工程]