Crystallographic orientation and electrochemical activity of AZ31 Mg alloy
Crystallographic orientation and electrochemical activity of AZ31 Mg alloy
复制标题
DOI：
10.1016/j.elecom.2010.05.011
复制
发表时间：
2010-08-01
影响因子：
5.4
通讯作者：
Xu, ZhenQing
中科院分区：
文献类型：
--
作者：
Song, Guang-Ling;Mishra, Raja;Xu, ZhenQing
轧制态AZ31镁合金具有高度的织构，在汽车工业中具有很大的应用潜力。其主要由（0001）晶面组成的滚动表面（RS）首次被测量为比其主要由（1010）晶面和（1120）晶面组成的横截面表面（CS）在5wt.%下具有更好的电化学稳定性和耐腐蚀性氯化钠。这些晶面的不同腐蚀性能可归因于它们不同的阳极和阴极反应活性。理论分析证实RS和CS表面不同的电化学活性源于（0001）、（1010）和（1120）晶面的不同表面能级。(C)2010年爱思唯尔。All rights reserved.
Rolled AZ31 Mg alloy, which has great potential applications in the automobile industry, is detected to be highly crystallographic textured. Its rolling surface (RS), mainly consisting of (0001) crystallographic planes, is first time measured to be more electrochemically stable and corrosion resistant than its cross-section surface (CS) mainly composed of crystallographic planes (1010) and (1120) in 5 wt.% NaCl. The different corrosion performances of these crystallographic planes can be ascribed to their different anodic and cathodic reaction activities. A theoretical analysis confirms that the different electrochemical activities of RS and CS surfaces originate from the different surface energy levels of the (0001), (1010) and (1120) crystallographic planes. (C) 2010 Elsevier By. All rights reserved.