中华医学超声杂志

应用化学 ›› 1993, Vol. 0 ›› Issue (5): 53-56.

• 研究论文 • 上一篇    下一篇

钢铁表面硅钼杂多酸化学转化膜的研究

方景礼, 王济奎, 刘彤秋, 刘琴, 宋文宝   

  1. 南京大学应用化学研究所 210008 南京
  • 收稿日期:1992-10-06 修回日期:1993-01-12 出版日期:1993-10-10 发布日期:1993-10-10

ACTION OF Si-Mo HETEROPOLY ACID ON THE SURFACE OF STEEL

Fang Jingli, Wang Jikui, Liu Tongqiu, Liu Qin, Song Wenbao   

  1. Applied Chemistry Institute, Nanjing University, 210008 Nanjing
  • Received:1992-10-06 Revised:1993-01-12 Published:1993-10-10 Online:1993-10-10

PDF

494

被引次数

5 | 1

摘要： 本文利用浸渍法在A2钢表面获得具有装饰效果的硅钼杂多酸转化膜。扫描电镜的表面形貌分析,以及3%NaCl水溶液中阳极极化曲线均证实该膜层具有较好的耐腐蚀效果。XPS和AES的分析结果表明膜层中Fe以Fe(Ⅲ)和Fe(Ⅱ)两种状态存在,Mo在膜层外部以Mo(Ⅵ)存在,内部则以Mo(Ⅵ)和Mo(Ⅳ)西种状态存在。

关键词: 钢, 铁, 硅钼杂多酸, 转化膜, 耐腐蚀性能

Abstract: A decorative chemical conversion film was formed on A3 mild steel by immersing it in a SiMo heteropoly-acid solution. The SEM photographs and the anodic polarization curves revealed the good anticorrosive effect of the film. The results of XPS and AES analyses showed that Fe existed as Fe(Ⅲ) and Fe (Ⅱ) in the film while Mo as Mo (Ⅵ) in the surface of the film but as Mo (Ⅵ) and Mo (Ⅳ) in the internal layer of the film. The relative atomic percent content(AC%) of the film obtained from the elemental composition constant region of the profile curves by AES was Fe 17.1%,Mo 13.5%,Si 8.8%, O 57.4% and C 3.2% respectively.

Key words: mild steel, Si-Mo heteropoly acid, chemical conversion film, anticorrosion property

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