硅酸盐学报2011，Vol.39Issue(12)：1988-1992,5.
Zn对Mg-Al-Pb-Zn系镁阳极材料组织结构及电化学性能的影响
Effects of Zinc on Microstructure and Electrochemistry Properties of Mg-Al-Pb-Zn Magnesium Alloys Anode Materials
王萍 1李建平 1郭永春 1杨忠 1夏峰1
作者信息
- 1. 西安工业大学材料与化工学院,西安710032
- 折叠
摘要
Abstract
Morphologies, microstructure, and composition distribution of Mg–Al–Pb–Zn magnesium anode materials were studied by metallographic microscopy, X-ray diffraction, and scanning electron microscopy. Corrosion behavior and electrochemical properties of Mg alloys were also investigated by constant current method, potential polarization, and drainage. Results show that with increased zinc, magnesium alloys exhibit uniform and fine grain size and then form fine equiaxed grain. The Mg–Al–Pb–Zn magnesium alloys consist of clavate β-Mg17Al12 phase, granulometric MgZn phase, and Mg2 Pb phase. Zinc can improve discharge potential and current efficiency, and reduce release hydrogen rate. With current density increasing, the release hydrogen rate improves, owing to the nega- tive variance effect of magnesium alloys. The current efficiency increases to ninety-one percent at 10 mA/cm2 . The main composition of corrosion products are Mg（OH）2 , Al2O3 , PbO2 , and MgAl2O4 , which are easier to be peeled off , leading to more negative and sta- ble work potential and continuously accelerated reaction time.关键词
镁合金/海水电池/阳极材料/电化学性能Key words
magnesium alloys/sea water battery/anode material/electrochemistry property分类
矿业与冶金引用本文复制引用
王萍,李建平,郭永春,杨忠,夏峰..Zn对Mg-Al-Pb-Zn系镁阳极材料组织结构及电化学性能的影响[J].硅酸盐学报,2011,39(12):1988-1992,5.
