Double-doped LDH films on aluminum alloys for active protection

作者：Zhang, You; Li, Yingdong; Ren, Yashuang; Wang, Hao; Chen, Fei^*

来源：Materials Letters, 2017, 192: 33-35.

DOI：10.1016/j.matlet.2017.01.038

• Layered double hydroxide
• In situ growth
• Corrosion
• Inhibitors
• Aluminum alloy
• Thin films

A double-doped layered double hydroxide (LDH) container film with cerium and vanadate ions was prepared in a two-step process. The Ce-doped ZnAl-LDH film was fabricated on aluminum alloy via a facile in situ growth method with urea hydrolysis, and then intercalated with V2O74- anions by anion-exchange process. The structure, morphology and composition of the as-prepared LDH films were investigated. A uniform and compact thin film was formed. EIS showed that the double incorporation of Ce(III) and V2O74- anions significantly enhance the impedance of the LDH film, indicating an effective protection for aluminum alloy by the active film.

• 出版日期2017-4-1
• 单位北京石油化工学院