卢杰.不同粒度金属粉形成机械镀层形貌及耐腐蚀性能研究[J].表面技术,2008,37(5):41-44.
LU Jie.Anticorrosion Property and Appearance of Mecharucal Zinc Coatings Formed by Metal Powder with Different Granularity[J].Surface Technology,2008,37(5):41-44 |
| 不同粒度金属粉形成机械镀层形貌及耐腐蚀性能研究 |
| Anticorrosion Property and Appearance of Mecharucal Zinc Coatings Formed by Metal Powder with Different Granularity |
| 投稿时间：2008-07-07 修订日期：2008-10-10 |
| DOI： |
| 中文关键词: 机械镀层 锌粉 片状锌-铝粉 盐雾试验 极化曲线试验 |
| 英文关键词:Mechanical plating coat Zinc powders Zn-Al flake powders Salt spray test Polarization curve experimentation |
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| 中文摘要: |
| 分别采用200、325、500、800目锌粉和325目锌、铝粉混合球磨成的片状锌一铝粉，经SnSO4活化，进行机械镀。用扫描电镜观察，锌粉多为较规则的球形，片状锌一铝粉多为不规则的片状结构。镀层表面球形颗粒状锌粉变形较大，镀层内部球形颗粒变形较小，多为椭球形。随着粒度的变小，镀层的致密程度增加。片状锌．铝粉形成的镀层的致密、平滑程度不如800、500目锌粉形成的镀层，但镀层的色泽明显改观，亮度增大。采用片状锌．铝粉形成的镀层受损后有自愈性。通过盐雾试验、极化曲线试验，验证了随着粒度的变小，耐腐蚀性显著增加，间接证明镀层致密性增加；片状锌一铝粉形成的镀层的耐腐蚀性能与800目球状锌粉形成的镀层相当。 |
| 英文摘要: |
| By using zinc powders of 200, 325, 500, 800 screen mesh and Zn-Al flake mixing-ballmilled from zinc powder and aluminum powder of 325 screen mesh, respectively, mechanical coverage was formed using SnS04 as activating medium. It was found, observed by SEM, that zinc particles were mostly regular globular shape, and Zn-Al flake powder was mostly irregular structure. The metamorphose of granular zinc powers on coating superficial was fairsized, and the distortion of globe grain with spheroidicity inside the coating was less. The compactness degree of the coverage increased with increscent granularity. The compactness and smoothness degree of the coating formed by Zn-Al flake powders has inferiority over which by zinc powders of 500,800 screen mesh. But the appearance of the coverage was changed obviously in color and luster, and the brightness was also increased. The plating coat using Zn-Al flake powders could repair naturally after coating damaged. It was verified through salt mist test and polarization curve experimentation that the anticorrosion mcreased remarkably with the increscent granularity, and the growing compactness of plating coat was tested indirectly. The anticorrosion of the plating coat formed by Zn-Al flake powders was equivalent with that of the coat formed by globe granular zinc powders of 800 screen mesh. |
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