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超疏水鎂合金制備及其耐腐蝕性研究
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山西工程技術學院,太原理工大學,太原理工大學,太原理工大學,太原理工大學,太原理工大學

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國家自然科學基金資助 (51374151,21201129)


Research on Preparation and Corrosion-reistance of Super-hydrophobic Mg alloys
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Shanxi Institute of Technology,Taiyuan University of Technology,Taiyuan University of Technology,Taiyuan University of Technology,Taiyuan University of Technology,Taiyuan University of Technology

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    摘要:

    本文報導了兩種化學試劑和兩種表面改性劑,通過4種不同的組合方式在鎂合金表面制備超疏水膜層的簡單方法。先分別使用氯化銅和硫酸鋅對鎂合金進行化學刻蝕,再通過油酸和硬脂酸對其進行表面修飾。改性以后試樣的靜態(tài)接觸角均達到150°以上,滾動角在6.5°左右；且試樣的超疏水性能保持穩(wěn)定,在空氣中暴露半年之久后,其接觸角依然保持在150°以上,變化幅度非常小。對四種不同的超疏水試樣進行電化學測試,比較發(fā)現(xiàn)采用氯化銅刻蝕后經過硬脂酸自組裝得到的超疏水表面擁有最好的耐腐蝕性,其自腐蝕電位達到-1.11V,相比于鎂合金基體提高了0.33V,且容抗弧直徑是基體的6-7倍。

    Abstract:

    Four simple methods of fabricating a super-hydrophobic film on magnesium alloy through the employment of two chemical reagents and two surface modifiers are reported in the paper. The Mg alloys are chemically etched by CuCl2 or ZnSO4 first and then modified with low surface energy material of oleic acid or stearic acid. After modification, the obtained samples show super-hydrophobicity with static contact angle to reach more than 150 ° and the sliding angle of about 6.5 °. The super-hydrophobicity of obtained samples are stable; the water contact angle remains above 150 ° after being exposed in air for six months. Compared with the electrochemical properties of four super-hydrophobic samples, it can be found that the sample that is etched by CuCl2 and then self-assembled by stearic acid has the best corrosion resistance with the corrosion potential Ecorr improved by 0.33V, reaching to -1.11V. The diameter of capacitive arc is also 6-7 times than substrate.

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衛(wèi)英慧,王海洋,梁苗苗,侯利鋒,李永剛,郭春麗.超疏水鎂合金制備及其耐腐蝕性研究[J].稀有金屬材料與工程,2017,46(12):4006~4011.[Yinghui Wei, Haiyang Wang, Miaomiao Liang, Lifeng Hou, Yonggang Li, Chunli Guo. Research on Preparation and Corrosion-reistance of Super-hydrophobic Mg alloys[J]. Rare Metal Materials and Engineering,2017,46(12):4006~4011.]
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  • 收稿日期:2015-10-12
  • 最后修改日期:2016-03-10
  • 錄用日期:2016-03-29
  • 在線發(fā)布日期: 2018-01-04
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