| 光亮剂对化学镀镍层性能及结构的影响 |
| 添加时间：2019/12/25 16:26:41 浏览次数： |
| 研究了酸性化学镀镍溶液的贵金属离子、重金属离子光亮剂对镀层硬度、结合力、孔隙率以及耐蚀性的影响,并通过AFM,XRD和XPS,分析光亮剂对镀层组织结构的影响.结果表明:贵金属离子光亮剂能明显提高EN镀层的耐蚀性,而重金属离子光亮剂降低了EN镀层的耐蚀性;两种光亮剂都能降低镀层的表面粗糙度,使构成镀层胞状物变小,并使镀层的非晶结构更加明显,镀态镀层表面Ni以Ni原子和Ni2+离子形式存在,P以负价离子和PO43-离子的形式存在,光亮剂的加入利于镀层表面形成磷酸镍的保护膜. The effects of noble metal ions and heavy metal ions brightener in Acid Electroless Nickel Plating Solution on the hardness, adhesion, porosity and corrosion resistance of the coating were studied. The effects of Brightener on the structure of the coating were analyzed by AFM, XRD and XPS. The results show that noble metal ions brightener can significantly improve the corrosion resistance of en coating, while heavy metal ions brightener can reduce the corrosion resistance of en coating The brightener can reduce the surface roughness of the coating, reduce the cellular structure of the coating, and make the amorphous structure of the coating more obvious. The Ni atom and Ni2 + ion exist on the surface of the as plated coating, and the P ion exists in the form of negative valence ion and PO43 - ion. The addition of brightener is conducive to the formation of the protective film of nickel phosphate on the surface of the coating |
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