摘要
在氨基磺酸盐溶液中获得了纳米Ni镀层和复合结构Ni-ZrO2镀层,两种镀层试样在4%NaCl溶液中进行耐蚀性能测试。利用X射线衍射、扫描电镜技术对镀层进行结构、形貌分析发现,Ni-ZrO2复合镀层表面颗粒更为细小,显微组织更加均匀、致密。腐蚀性能试验表明复合电镀层的耐蚀性优于纳米镍镀层的原因是因为纳米ZrO2颗粒的存在,不仅细化了基质金属的晶粒,同时提高了复合电镀层表面的化学稳定性,提高了腐蚀电位。
Nano-Ni coating and composite Ni-ZrO2 coating are obtained in sulphamate solution. Corrosion resistance of the two coatings is tested in 4% NaCI solution. By using X-ray diffraction and Scanning Electron Microscopy to analyze the structure and morphology of the coatings, it is found that Ni-ZrO2 coating has more uniform and dense microstructure, with tinier particles on the surface. Corrosion tests show that corrosion resistance of the composite coating is better than the nano-coating due to the presence of nano-particles ZrO2 which not only make the metal matrix grains finer but also improve chemical stability of the composite coating surface and corrosive potential.
出处
《矿冶工程》
CAS
CSCD
北大核心
2009年第1期97-100,共4页
Mining and Metallurgical Engineering
基金
福建交通职业技术学院科研基金赞助[KY08029(0190060102)]
关键词
防腐材料
复合镀层
电沉积
Ni—ZrO2
耐蚀性能
corrosion-proof material
composite coating
electrodeposition
Ni-ZrO2
corrosion resistance
