碱式硫酸锌微米片增强氟碳涂层的腐蚀防护性能

摘要

以七水合硫酸锌(ZnSO4?7H2O)和六亚甲基四胺(HMT)为原料,采用化学浴沉积法合成了碱式硫酸锌(ZSH)微米片,并将其作为填料嵌入氟碳(FC)清漆中.采用傅里叶变换红外光谱仪、场发射扫描电镜、能谱仪和X射线衍射仪分析了ZSH微米片的健结构、形貌和组分.对比了不同ZSH的质量分数时在紫铜上所得FC–ZSH复合涂层的剖面结构、ZSH分布情况及腐蚀防护性能.结果表明,所得ZSH呈典型的六方片状晶体结构,表面光滑、无缺陷.ZSH在FC–ZSH 复合涂层中均匀分布,令涂层的腐蚀防护性能增强,尤以ZSH质量分数为10%时为最佳.%Micron zinc sulfate hydroxide hydrate (ZSH) flakes were synthesized by chemical bath deposition with ZnSO4?7H2O and hexamethylenetetramine (HMT), and then embedded into fluorocarbon (FC) coating as fillers. The bond structure, morphology, and elemental composition of micron ZSH flakes were analyzed using Fourier-transform infrared spectrometer, field-emission scanning electron microscope, and X-ray diffractometer. The cross-sectional structure, distribution of ZSH and anticorrosion property of FC–ZSH composite coatings with different mass concentrations of ZSH on pure copper were compared. The results showed that the crystalline ZSH flake was typically hexagonal shape with a smooth and defect-free surface, and could be distributed uniformly in the FC coating, improving its anticorrosion property, especially when the mass fraction of ZSH was 10%.