Corrosion and Electrochemical Behaviors of As-cast Mg-8Y and Mg-5Y-7Gd-1Nd-0.5Zr Magnesium Alloys in NaCl Aqueous Solution

摘要：

　　The corrosion mechanisms of as-cast Mg-8Y and Mg-5Y-7Gd-1Nd-0.5Zr Mg alloys in 5% NaCl aqueous solution were investigated by electrochemical testing and SEM observation.The electrochemical results indicated that the corrosion resistance of Mg-8Y and Mg-5Y-7Gd-1Nd-0.5Zr alloys in 5% NaCl aqueous solution gradually deteriorated with increasing of immersion time expect for 2h and 24h immersion.The Cl- anion led to the initiation and development of the corrosion pits.The cathodic reaction was driven by hydrogen evolution reaction.The presence of filiform corrosion also proved a resistant oxide film naturally formed on the surface of Mg-8Y and Mg-5Y-7Gd-1Nd-0.5Zr alloys.The corrosion resistance of Mg-5Y-7Gd-1Nd-0.5Zr was better than Mg-8Y.

关键词： Mg-5Y-7Gd-1Nd-0.5Zr Mg-8Y Corrosion behavior Electrochemical

作者: Xin Zhang Xia Deng Kui Zhang Xinggang Li Yang Shi Yulong Zhang Min Peng Lingying Kong

作者单位: State Key Lab for Fabrication & Processing of Non-ferrous Metals; Beijing General Research Institute State Key Lab for Fabrication & Processing of Non-ferrous Metals; Beijing General Research Institute Military Representative Office of Peoples Liberation Army Stationed in 618 factory , Beijing 100072 China Huadian Science and Technology Institute, Beijing 100035, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 437-442

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）