【摘要】 采用电沉积的方法制备Ni-P-La合金镀层,用网络测试仪测试了不同稀土添加量、不同环境下样品的电磁屏蔽效能。结果表明:在10~350MHz内,Ni-P-La合金镀层的电磁屏蔽效能在45~70dB之间,盐雾腐蚀对镀层的电磁屏蔽效能影响较小;少量稀土的添加,不但能提高镀层的耐蚀性能,而且能将镀层的电磁屏蔽效能提高1~5dB。更多还原

【Abstract】 Ni-P-La alloy coatings were prepared by electrodeposition.Electromagnetic shielding effectiveness of the samples under the different concentration of rare earth or the different condition was tested with the network analyzer.The results show that Ni-P-La alloy coating exhibits moderate shielding effectiveness(from 45 to 70dB) when the frequency is between 10 and 350MHz and erodibility of the salt spray has a little influence of electromagnetic shielding effectiveness.A small amount of rare earth doped in plating bath not only can enhance corrosion resistance of coating,but also can enhance 1～5dB of electromagnetic shielding effectiveness.更多还原