关键字：ELECTROLYTIC OXIDATION COATINGS; FORMATION MECHANISM; RESISTANCE; HYDROXYAPATITE; ELECTRODEPOSITION; BENZOTRIAZOLE; FUNCTIONALITY; CHROMATE; SURFACE; FILM
摘要：A novel self-healing calcium-phosphate-vanadium (Ca-P-V) composite coating on Mg alloy was successfully fabricated through a chemical conversion method. The effects of the vanadium concentration on the anticorrosion property of the substrate were also tested. The Ca-P-V coating with the main composition of CaHPO4, Ca-3(PO4)(2), and Mg-3(PO4)(2), with some hydroxides of V(V) dispersed into it has a similar morphology to the single vanadium coating. The corrosion behaviour of the Ca-P-V coating was studied through the electrochemical tests and the scratch immersion test in 3.5 wt % NaCl solution. The results showed that the Ca-P-V coated samples not only exhibit good corrosion resistance property, but also show self-healing ability. The ions of Ca, P, and V released from the coating can migrate in the corrosion solution and form a new compound layer on the damaged zone.
卷号：9
期号：6
是否译文：否