摘要
采用硫酸刻蚀和接枝疏水长链的方法,成功制备出了具有超疏水特性的镁合金表面。采用红外光谱、扫描电镜和电化学测试等技术对超疏水镁合金表面进行了表征和分析。研究结果表明:硫酸处理使得镁合金表面产生微米/纳米二元复合的花状粗糙结构;硬脂酸的疏水长链通过化学键键接在镁合金表面,从而显著降低了镁合金表面的自由能。最终得到接触角可达152°、滚动角小于10°的超疏水表面,从而极大地提高了镁合金的耐腐蚀性能。
A magnesium alloy surface with superhydrophobic performance was successfully fabricated by H2SO4 etching and grafting hydrophobic long chains.The surface was characterized by IR,SEM and electrochemical test.Results showed that the flower-like structure with micro/nanostructure binary phases presented at the surface upon H2SO4 etching,while the hydrophobic long chains in stearic acid were grafted onto the surface with chemical bond.Consequently,the free energy of the magnesium alloy surface wasdecreased greatly,and a kind of superhydrophobic surface with a contact angle of 152° and a rolling angle below 10° was fabricated.Therefore,the corrosion resistance of the magnesium alloy was improved remarkably.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第8期67-69,共3页
New Chemical Materials
基金
国家自然科学基金(21161012)
甘肃省自然科学基金(1107RJZA184)
关键词
镁合金
超疏水
微米
纳米结构
耐蚀性
magnesium alloy
superhydrophobicity
micro/nanostructure
corrosion resistance
