Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1469309 | Corrosion Science | 2013 | 11 Pages |
An optically transparent Li–Al–CO3 layered double hydroxide (LDH) film was formed on an AZ31 substrate by applying DC voltage between the cathode (AZ31) and the anode (stainless steel) in a Li+/Al3+ aqueous solution. The film thickness increased with electrolysis time. The LDH-coated sample exhibited low corrosion rate in NaCl solution, which was consistent with the results from long-term corrosion testing in a high-humidity environment. The LDH film exhibited good corrosion performance, which mainly resulted from its high hydrophobicity and its increased surface pH value during corrosion testing.
► A hydrotalcite film has been formed electrochemically on AZ31. ► The hydrotalcite film is optically transparent. ► The film shows long-term corrosion resistance in high-humidity environment. ► The hydrotalcite film is hydrophobic with a water contact angle of 130°.