Microstructure and corrosion resistance of a Mg2Sn-dispersed Mg alloy subjected to pulsed electron beam treatment  

作　　者：Daseul Lee Beomcheol Kim Soo-Min Baek Jisoo Kim Hyung Wook Park Jung Gu Lee Sung Soo Park 

机构地区：[1]School of Materials Science and Engineering,Ulsan National Institute of Science and Technology,Ulsan 44919,Republic of Korea [2]School of Mechanical,Aerospace and Nuclear Engineering,Ulsan National Institute of Science and Technology,Ulsan 44919,Republic of Korea [3]School of Materials Science and Engineering,University of Ulsan,Ulsan 44610,Republic of Korea

出　　处：《Journal of Magnesium and Alloys》2020年第2期345-351,共7页镁合金学报（英文）

基　　金：This work was supported by the National Research Foundation of Korea(NRF)grant funded by the Korea govemment(MSIT)(No.2019R1A2C1003905).

摘　　要：We report that the corrosion resistance of a Mg-Sn-based alloy with MgzSn precipitates can be considerably improved by surface modification using pulsed electron beam treatment.The alloy subjected to a pulse electron beam treatment showed a modified surface layer with a thickness of〜12 μm,appearing more resistant to corrosion attack than the bare surface of the alloy.In 0.6 M NaCl solution,the alloys with and without the surface modification exhibited average corrosion rates of 4.3 and 8.1 mm y^-1,respectively.The improved corrosion resistance was attributed to reduced cathodic activation,resulting from the surficial reduction of relatively noble Mg2Sn precipitates.

关 键 词：Magnesium alloy Mg2Sn Intermetallic compound Pulsed electron beam treatment CORROSION 

分 类 号：TG146.22[一般工业技术—材料科学与工程]