等离子喷涂Fe-Co基非晶合金涂层的结构与电磁屏蔽性能  

Microstructure and electromagnetic shielding performance of plasma-sprayed Fe-Co-based amorphous alloy coatings

作　　者：倪晓俊 薄希辉[1,2] 赵新彬 卢志超[1,2] NI Xiao-jun;BO Xi-hui;ZHAO Xin-bin;LU Zhi-chao(China Iron ＆ Steel Research Institute Group,Beijing 100081,China;Advanced Technology ＆ Materials Co.,Ltd.,Beijing 100081,China)

机构地区：[1]中国钢研科技集团有限公司,北京100081 [2]安泰科技股份有限公司,北京100081

出　　处：《粉末冶金工业》2018年第5期50-54,共5页Powder Metallurgy Industry

摘　　要：采用气雾化制备了Fe（36）Co（36）B（20）Nb4Si4合金粉末,利用大气等离子喷涂在H62铜板和铝管表面制备了厚度约为0.2-0.3 mm的非晶合金涂层。结果表明：Fe（36）Co（36）B（20）Nb4Si4合金涂层几乎为完全的非晶态结构,涂层硬度高达1 200 HV,喷涂有Fe（36）Co（36）B（20）Nb4Si4涂层的样品对直流磁场和高频电磁场均具有良好的屏蔽性能,在800 A/m直流磁场下屏蔽效能为25 dB,在300 kHz-1.5 GHz频段屏蔽效能约为80 dB。Fe（36）Co（36）B（20）Nb4Si4alloy powders were prepared by gas atomization technology.Amorphous Fe（36）Co（36）B（20）Nb4Si4alloy coatings with thickness of about 0.2-0.3 mm were formed by air plasma-spraying the powders onto the H62brass substrates and aluminium pipes.The results show that the Fe（36）Co（36）B（20）Nb4Si4alloy coating is almost completely amorphous,and the hardness of the coating is as high as 1 200 HV.The samples coated with Fe（36）Co（36）B（20）Nb4Si4coating have good shielding performance for both direct current magnetic field and high frequency electromagnetic field.The shielding efficiency is 25 dB at 800 A/m direct current magnetic field and 80 dB at 300 kHz-1.5 GHz frequency band.

关 键 词：非晶合金 大气等离子喷涂 非晶合金涂层 电磁屏蔽 

分 类 号：TG174.4[金属学及工艺—金属表面处理]