安成强,刘新院,陈梨,程涛,郝建军.锌锰系磷化膜硅酸钠封闭工艺研究[J].表面技术,2012,(3):84-86,104.
AN Cheng-qiang,LIU Xin-yuan,CHEN Li,CHENG Tao,HAO Jian-jun.The Study on Process of Sodium Silicate Sealingfor Zinc-manganese Phosphate Coating[J].Surface Technology,2012,(3):84-86,104 |
| 锌锰系磷化膜硅酸钠封闭工艺研究 |
| The Study on Process of Sodium Silicate Sealingfor Zinc-manganese Phosphate Coating |
| 投稿时间：2012-04-05 修订日期：2012-06-20 |
| DOI： |
| 中文关键词: 硅酸盐 封闭 磷化膜 耐蚀性 |
| 英文关键词:sodium silicate sealing phosphate corrosion resistance |
| 基金项目: |
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| Author | Institution |
| AN Cheng-qiang | School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China |
| LIU Xin-yuan | Chongqing Jianshe Industries CO., LTD., Chongqing 400054, China |
| CHEN Li | Chongqing Jianshe Industries CO., LTD., Chongqing 400054, China |
| CHENG Tao | Chongqing Jianshe Industries CO., LTD., Chongqing 400054, China |
| HAO Jian-jun | School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, China |
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| 中文摘要: |
| 通过单因素对比实验,研究了硅酸钠浓度、添加剂以及封闭时间、封闭温度等对磷化膜封闭效果的影响,获得了最佳封闭工艺。采用加速腐蚀实验方法和电化学测试技术,将硅酸盐封闭的效果与铬酸盐封闭进行了对比,并探讨了封闭机理。结果表明:硅酸钠封闭后,磷化膜中性盐雾试验(NSS)24h未见腐蚀,自腐蚀电位正移,自腐蚀电流明显降低;硅酸钠封闭是通过形成硅酸盐沉淀封闭磷化膜的微小凹陷处,从而提高磷化膜耐蚀性的。 |
| 英文摘要: |
| By single factor experiment, the best sealing prosess was obtained after studying the influence of the concentration of sodium silicate, the additives, sealing time and sealing temperature on the the sealing effect of phosphate coating. The sealing effect of silicate and chromate salt was compared by the accelerated corrosion experiment method and electrochemical test technology and the mechanism of sealing was explored. The results show that after sealing by sodium silicate, the phosphate coating has not seen the corrosion after 24 hours'neutral salt spray test and corrosion potential moves positively while the corrosion current reduces significantly; The sodium silicatesealing can improve the corrosion resistance of the phosphate coating because of the silicate deposite which can seal the hollow of the phosphate coating. |
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