Study on Electromagnetic Shielding Effectiveness of Ni-P-La Alloy Coatings
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第2期
论文作者：Ju Zhengting Yang Guangzhou Xuan Tianpeng Yang Lilin
Key words：Ni-P-La alloys; electromagnetic shielding; shielding effectiveness; electroplating;
Abstract: Ni-P and Ni-P-La alloy coatings were prepared by electroplating. Electromagnetic shielding effectiveness under the different components of rare earth or the different operating conditions was tested by the network analyzer. The results show that electromagnetic shielding effectiveness of Ni-P-La alloy coating varies from 45 dB to 70 dB with the variety of the frequency from 10 MHz to 350 MHz. Corrosion of the salt fog impacts on the electromagnetic shielding effectiveness a little. A small amount of rare earth added to plating bath can not only enhance corrosion resistance of coating, but make electromagnetic shielding effectiveness increase by 1～5 dB.
Ju Zhengting1，Yang Guangzhou1，Xuan Tianpeng1，Yang Lilin1
(1.College of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China)
Abstract:Ni-P and Ni-P-La alloy coatings were prepared by electroplating. Electromagnetic shielding effectiveness under the different components of rare earth or the different operating conditions was tested by the network analyzer. The results show that electromagnetic shielding effectiveness of Ni-P-La alloy coating varies from 45 dB to 70 dB with the variety of the frequency from 10 MHz to 350 MHz. Corrosion of the salt fog impacts on the electromagnetic shielding effectiveness a little. A small amount of rare earth added to plating bath can not only enhance corrosion resistance of coating, but make electromagnetic shielding effectiveness increase by 1～5 dB.
Key words:Ni-P-La alloys; electromagnetic shielding; shielding effectiveness; electroplating;
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