赵惠,崔建忠.镁及其合金表面化学镀银工艺的研究[J].表面技术,2007,36(4):45-48.
ZHAO Hui,CUI JIAN-zhong.Study on Electroless Silver Plating on Magnesium and Its Alloys[J].Surface Technology,2007,36(4):45-48 |
| 镁及其合金表面化学镀银工艺的研究 |
| Study on Electroless Silver Plating on Magnesium and Its Alloys |
| 投稿时间：2007-03-14 修订日期：2007-08-10 |
| DOI： |
| 中文关键词: 有机涂膜 中间层 化学镀 银镀层 |
| 英文关键词:Organic coatings Interlayer Electroless plating Silver plating film |
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| 中文摘要: |
| 研究了镁合金表面化学镀银的工艺：利用涂膜及化学镀的方法对镁合金进行处理，即先在镁及其合金表面涂覆有机涂膜，然后再进行化学镀。工艺利用有机涂膜充当基体镁合金与镀层之间的中间层，使基体与镀层之间不直接接触，当化学镀进行时，镀层直接在中间层表面形成。虽然镁的化学活性高，但中间层的存在使化学镀银可以在镁及其合金表面实现。以A231镁合金轧板为基体，采用该工艺在其表面得到了理想的银镀层。通过SEM和XRD分析了银镀层的生长过程。十字切割法测量结果表明，涂膜与基体之间的结合力能满足使用要求。用极化曲线法研究了化学镀后试样在NaCl溶液中的腐蚀行为，结果表明：化学镀后试样的自腐蚀电位明显正移，腐蚀电流远远小于基体，具有良好的耐蚀性。 |
| 英文摘要: |
| Electroless silver plating on A231 Mg alloys via electroless plating and organic coatings ( organosilicon heat-resisting vamish) was studied. The organic coating was made after simple immersion of the samples in organosilicon heat-resisting vamish. In this method the organic coating acted as the interlayer between the substrate and the silver film. When the reaction started, silver would deposit virtually onto the interlayer. Metallized films-ray diffraction and SEM analysis were used to investigate the morphology of the interlayer and silver film growing process. The silver coatings have a rather perfect crystal structure. Also, the potentiodynamic polarization curves for corrosion studies of the coated magnesium alloys were performed in a corrosive environment of 3. 50-/o wt NaCl at neutral pH (7) . The results reveal: comparing with the substrate, the corrosion resistance of coated A231 magnesium alloys increases greatly. The method proposed in this work is environmentally friendly : non-toxic chemicals are used. In addition, it provides a new concept for the corrosion inhibition of magnesium alloys. |
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