Effect of yttrium modification on the corrosion behavior of AZ63 magnesium alloy in sodium chloride solution
文献类型：CNKI期刊论文
| 作者 | Jiarun Li ; Zhuoyuan Chen; Jiangping Jing; Jian Hou
|
| 发表日期 | 2021-03-15 |
| 出处 | Journal of Magnesium and Alloys
 |
| 关键词 | Magnesium Yttrium alloying Corrosion Intermetallic phase Oxide layer |
| 英文摘要 | The microstructures and corrosion behaviors of Mg-6%Al-3%Zn and Mg-6%Al-3%Zn-(0.25~1.0)%Y in 3.5 wt.% Na Cl solution are investigated via morphology observation, phase characterization, immersion and electrochemical methods. The experimental results suggest that yttrium alloying can improve the corrosion resistance of Mg-6%Al-3%Zn throughout the immersion. The initial enhanced corrosion resistance of magnesium alloy is attributed to the Y alloying, which gives rise to the increasing content of Al_2O_3 in oxide layer. The promoted protectiveness of oxide layer on Mg-6%Al-3%Zn-1.0%Y alloy arouse a filiform corrosion as revealed by in-situ metallographic observation. Furthermore, the Y-containing magnesium alloys still perform higher corrosion resistance compared with that of Mg-6%Al-3%Zn alloy even if the oxide layer is exhausted. This phenomenon is owing to two factors, one is the gradual transformation of intermetallic phases from continuous Mg17 Al12 to discrete Al2 Y in matrix, by which the micro-galvanic corrosion between α-Mg grains and intermetallic phases is alleviated; the other is the morphology variation of corrosion products, the uniform and compact products layer on Y-containing alloys provide a barrier that effectively prevent the corrosive ions from penetrating into and reacting with Mg matrix. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | financial support of the Natural Science Foundation of Shan Dong Province of China (Grant No. ZR2018BD025) ; National Natural Science Foundation of China (Grant No. 41576114) ; Qingdao Innovative Leading Talent Foundation (Grant No. 15-10-3-15-(39)zch) ; Qingdao Science and Technology Achievement Transformation Guidance Plan (Applied Basic Research, Grant No. 14-2-4-4-jch) ; financially supported by State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, China (Project No. KF190404) |
| 卷 | v.9期:02页:267-280 |
| 语种 | 英文; |
| 分类号 | TG146.22 |
| ISSN号 | 2213-9567 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187840]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.CenterforOceanMega-Science,ChineseAcademyofSciences 2.KeyLaboratoryofMarineEnvironmentalCorrosionandBio-fouling,InstituteofOceanology,ChineseAcademyofSciences 3.OpenStudioforMarineCorrosionandProtection,PilotNationalLaboratoryforMarineScienceandTechnology(Qingdao) 4.StateKeyLaboratoryforMarineCorrosionandProtection,LuoyangShipMaterialResearchInstitute |
| 推荐引用方式 GB/T 7714 | Jiarun Li,Zhuoyuan Chen,Jiangping Jing,et al. Effect of yttrium modification on the corrosion behavior of AZ63 magnesium alloy in sodium chloride solution. 2021. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。