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本试验在普通镀镍液中添加了 10～ 4 0 g/L的二氧化硅微粒 ,成功地制备了 Ni/Si O2 复合镀层 ,随后在 80 0℃下进行了高温氧化试验。研究结果表明 :不同粒径的微粒均可复合进入镀层 ,微粒的进入对镀层的高温抗氧化性有明显影响 ;初始氧化阶段 ,微粒的存在有利于提高镀层的抗高温氧化性能 ;在高温氧化过程中 ,还明显存在基底铜向镍镀层的扩散 ,这可能有利于增强镀层与基底之间的结合力。X射线衍射分析表明 :高温氧化后在镀层表面主要生成 Ni O产物。
In this experiment, 10 ~ 40 g / L silica particles were added to ordinary nickel plating solution, Ni / Si O2 composite coating was successfully prepared, and then high temperature oxidation test was carried out at 80 0 ℃. The results show that particles with different particle sizes can all be incorporated into the coating. The entry of particles has a significant effect on the oxidation resistance of the coating at high temperature. During the initial oxidation stage, the presence of the particles helps to improve the high temperature oxidation resistance of the coating. , There is also a clear presence of diffusion of the base copper to the nickel plating, which may be advantageous in enhancing the adhesion between the plating and the base. X-ray diffraction analysis showed that the NiO product was mainly formed on the surface of the coating after the high temperature oxidation.