材料科学与工程学报2018，Vol.36Issue(3)：408-417,469,11.DOI:10.14136/j.cnki.issn1673-2812.2018.03.012
Mg-Al-Pb及Mg-Al-Pb-Zn合金在3.5%/NaCl溶液中的腐蚀行为
Corrosion Behavior of Mg-Al-Pb and Mg-Al-Pb-Zn Alloys in 3.5% NaCl Solution
摘要
Abstract
The corrosion behavior of Mg-Al-Pb and Mg-Al-Pb-Zn alloys in 3.5% NaCl solution was investigated by electrochemical measurement ,immersion test and corrosion morphology observation . The results indicate that there is an incubation period at the corrosion onset during which the corrosion rate is low . Thereafter ,the corrosion comes into steady state ,especially after long time immersion .For the solution treated (T4) specimens ,the corrosion takes place along the grain boundaries and is first inhibited by zinc in incubation period of time and then accelerated also by the zinc after the incubation and long time immersion .For the as-cast specimens ,the corrosion was initiated around the second phases ,which hinder the corrosion when immersed for a long time .The hydrogen evolution rate of both Mg-Al-Pb and Mg-Al-Pb-Zn alloys increases linearly with the increasing surface roughness of the corroding alloys after long time immersion when steady state has been established .关键词
海水电池/镁阳极/电化学/腐蚀Key words
seawater battery/magnesium anode/electrochemical/corrosion分类
矿业与冶金引用本文复制引用
殷立勇,周威,王平安..Mg-Al-Pb及Mg-Al-Pb-Zn合金在3.5%/NaCl溶液中的腐蚀行为[J].材料科学与工程学报,2018,36(3):408-417,469,11.基金项目
Funded by Natural Science Foundation of Hunan province (2016JJ2147) and Science and Technology Plan Projects of Hunan Province (2015JC3004) （2016JJ2147）
