镁及其合金腐蚀析氢的研究现状

摘要

The research status of hydrogen evolution during magnesium alloy′s corrosion process and the feature of hydrogen evolution were reviewed. In addition, we also summarized those theories for Negative Difference Effect (NDE) during magnesium corrosion and discussed the corresponding shortcomings. The effects of hydrogen on magnesium′s corrosion behavior were generalized. Moreover, the classical method to measure the hydrogen evolution were reviewed and its disadvantages were pointed out. Finally, the Scanning Electrochemical Microscopy (SECM) was introduced as a new method to detect the hydrogen, as well as our work on hydrogen evolution and spatial distribution based on SECM.%综述目前镁及其合金腐蚀过程中析氢的研究现状，阐述镁合金腐蚀过程中的析氢特点，并对已有解释镁合金析氢负差数效应的理论及存在的问题进行了总结，同时还概括了氢气对镁合金腐蚀的影响，回顾了传统测量氢气的方法及存在的问题，重点介绍了扫描电化学显微镜微区定量收集氢气的新方法，以及应用扫描电化学显微镜研究纯镁腐蚀过程中微区析氢行为。