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铁酸镍复合环氧富 Zn-Al 涂层的制备及 防腐性能研究
Preparation and their Corrosion Resistances of NiFe 2 O 4 /Zn-Al-rich Epoxy Coatings
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- DOI:
- 作者:
- 陈 贤 1 ， 2 ，汪永民 1 ， 2 ，李 强 1 ，吴 健 1 ，陶学伟 1 ， 2 ，巴志新
CHEN Xian 1,2 , WANG Yongmin 1,2 , LI Qiang 1 , WU Jian 1 , TAO Xuewei 1,2 , BA Zhixin 1,2
- 作者单位:
- 1. 南京工程学院 材料科学与工程学院，江苏 南京 211167；2. 江苏省先进结构材料与应用技术重点实验室，江苏 南京 211167
1. School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing 211167, China; 2. Jiangsu Province Advanced Structural Materials and Application Technology Laboratory, Nanjing 211167, China
- 关键词:
- 环氧树脂；铁酸镍；耐腐蚀性；盐雾腐蚀
epoxy resin; NiFe 2 O 4 ; corrosion resistance; salt spray corrosion
- 摘要:
- 向环氧涂层中添加纳米铁酸镍（ NiFe 2 O 4 ）、鳞片状 Zn 粉与 Al 粉制备出铁酸镍复合环氧富 Zn-Al 涂层。采用
扫描电子显微镜、能谱仪、电化学测试及中性盐雾试验等研究了涂层的表面形貌、组成及其在腐蚀环境中的腐蚀行为。
结果表明：纳米铁酸镍有效填充了环氧富 Zn-Al 涂层内部交叠金属粉末之间的孔隙，提高了涂层致密性，同时其阳离子
选择性增强了涂层阻碍腐蚀介质渗入能力；与环氧富 Zn-Al 涂层相比，复合涂层的耐蚀性能明显提高，且经盐雾试验
720 h 后，涂层表面完整，无明显腐蚀点。
The NiFe 2 O 4 /Zn-Al-rich epoxy coating was prepared by addition of NiFe 2 O 4 nanoparticles, flaky Zn powder and
Al powder into epoxy coating. The surface morphology, composition and corrosion behavior of the coating in corrosive
environment were studied by scanning electron microscope (SEM), energy dispersive spectrometer (EDS), electrochemical
test and neutral salt spray test. The results show that the nanoparticles NiFe 2 O 4 effectively fills the pores between the
overlapping metal powders in the epoxy Zn-Al coating, improving the compactness of the coating, and the cationic
selectivity enhances the ability of the coating to prevent the infiltration of corrosive media. Compared with the epoxy Zn-Al
rich coating, the corrosion resistance of the composite coating is obviously improved. After 720 h salt spray test, the
coating surface is intact without obvious corrosion point.