Decanoate conversion layer with improved corrosion protection for magnesium alloy

作者：Li, Yeping; Tan, Chunhui; Qi, Gongwei; Guo, Jing; Wang, Xin; Zhang, Shuyong^*

来源：Corrosion Science, 2013, 70: 229-234.

DOI：10.1016/j.corsci.2013.01.034

• Magnesium
• Cyclic voltammetry
• EIS
• Passive films
• Neutral inhibition

A novel decanoate conversion layer (DCL) with improved hydrophobicity for the corrosion protection of Mg alloy is fabricated and tested. XRD, EDX and FFIR results suggest that DCL comprises (CH3(CH2)(8) COO)(2)Mg and Mg(OH)(2). The contact angle of DCL increases with increased cycling number and reaches ca. 1200 at the 30th cycle. The corrosion protection of DCL is much better than that of a decanoate inhibition layer, and close to that of a chromate conversion layer. With increased thickness, improved compactness and hydrophobicity, the decanoate conversion is proven to be a green and effective way to protect Mg alloys from corrosion.

• 出版日期2013-5
• 单位山东大学