| 电弧喷涂Zn-Al-Mg-La-Ce涂层的耐腐蚀性能 |
| |
| 作者姓名： | 邢士波 肖葵 李丽 李晓刚 刘安强 王恩清 |
| |
| 作者单位： | 1. 北京科技大学新材料技术研究院, 北京 100083; |
| |
| 基金项目： | 国家科技基础条件平台建设计划;国家自然科学基金 |
| |
| 摘 要： | 采用电弧喷涂法制备Zn-Al-Mg-La-Ce涂层,通过盐雾试验对涂层进行腐蚀,利用能谱分析、X射线衍射分析、扫描电镜观察、极化曲线以及电化学阻抗谱等手段对腐蚀前后的Zn-Al-Mg-La-Ce涂层进行了研究.结果表明:实验制备的Zn-Al-Mg-La-Ce涂层具有较好的自封闭效果,组织致密,在腐蚀过程中表面的微观孔隙能够被自身的腐蚀产物有效堵塞,涂层表面形成的致密腐蚀产物层能够阻止腐蚀的进一步发生.因此,Zn-Al-Mg-La-Ce涂层具有优异的耐蚀性能.
|
| 关 键 词： | 锌铝合金 稀土 涂层 耐腐蚀性 喷涂 |
| 收稿时间： | 2011-08-09 |
Corrosion resistance of Zn-Al-Mg-La-Ce coatings by electric arc spraying |
| |
| Affiliation: | 1. Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China;2. College of Mechanical and Electrical Engineering, Hebei University of Engineering; Handan 056038, China;3. Technology Center, Xinxing Ductile Iron Pipe Group Company, Handan 056300, China |
| |
| Abstract: | Zn-Al-Mg-La-Ce coatings were prepared by electric arc spraying,and their corrosion behavior was studied with salt spray test.The characteristics of the coatings before and after corrosion were investigated by energy dispersive spectrometry(EDS),X-ray diffraction(XRD),scanning electron microscopy(SEM),polarization curves,and electrochemical impedance spectroscopy.It is shown that the coatings have outstanding self-sealing effectiveness,and their structures are compact.During corrosion,microscopic pores on the surfaces of the coatings can be jammed with their own corrosion products,thus forming a dense corrosion product layer to prevent from further corrosion.Consequently,the corrosion resistance of Zn-Al-Mg-La-Ce coatings is superior to that of normal coatings. |
| |
| Keywords: | |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《》浏览原始摘要信息 |
|
点击此处可从《》下载全文 |
|
