经小槽电镀，获得外观致密均匀，似镜面光亮，结合力强，具有优良的可焊性镀层。
A uniform, compact, bright lustre, good adhosive and excellent solderable coating was obtained by the experimental electroplating.
结果表明：纳米颗粒的加入使复合镀层组织明显细化和致密。
The results show that the microstructure of nano composite coatings is obviously fined and compacted because of containing nano-particles.
晶粒长大、晶界面积减少以及镀层表面生成较厚的、致密的氧化膜是耐蚀性提高的主要原因。
The main cause of better corrosion resistance was due to growth of granules, decrease of grain boundary area, and formation of thick and compact oxidation film on the coating surface.
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