Effects of Y and Zn additions on electrical conductivity and electromagnetic shielding effectiveness of Mg-Y-Zn alloys
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2019年第6期
论文作者：Lizi Liu Xianhua Chen Jingfeng Wang Liying Qiao Shangyu Gao Kai Song Chaoyue Zhao Xiaofang Liu Di Zhao Fusheng Pan
文章页码：1074 - 1080
摘 要：Microstructure, electrical conductivity, and electromagnetic interference（EMI） shielding effectiveness（SE） of cast Mg-x Zn-y Y（x = 2–5, y = 1–10） alloys were systematically investigated to understand the effects of Zn and Y additions on electrical conductivity and electromagnetic shielding effectiveness of the alloys.Experimental results indicate that the electrical conductivity and SE of the Mg-x Zn-y Y alloys decrease with Y/Zn ratio. Electrical conductivity is the main factor that affects the electromagnetic shielding properties and the variation tendency of electromagnetic shielding properties of the Mg-x Zn-y Y alloys is consistent with conductivity. Valence of Y and Zn atoms, configuration of extranuclear electron and volumetric difference are main reasons for the variations in the electrical conductivity. A high density of second phase and the formation of semi-continuous network structure can also improve the SE value at high frequencies.
Lizi Liu，Xianhua Chen，Jingfeng Wang，Liying Qiao，Shangyu Gao，Kai Song，Chaoyue Zhao，Xiaofang Liu，Di Zhao，Fusheng Pan
摘 要：Microstructure, electrical conductivity, and electromagnetic interference（EMI） shielding effectiveness（SE） of cast Mg-x Zn-y Y（x = 2–5, y = 1–10） alloys were systematically investigated to understand the effects of Zn and Y additions on electrical conductivity and electromagnetic shielding effectiveness of the alloys.Experimental results indicate that the electrical conductivity and SE of the Mg-x Zn-y Y alloys decrease with Y/Zn ratio. Electrical conductivity is the main factor that affects the electromagnetic shielding properties and the variation tendency of electromagnetic shielding properties of the Mg-x Zn-y Y alloys is consistent with conductivity. Valence of Y and Zn atoms, configuration of extranuclear electron and volumetric difference are main reasons for the variations in the electrical conductivity. A high density of second phase and the formation of semi-continuous network structure can also improve the SE value at high frequencies.
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