In this book, the corrosion protection provided by coatings of poly (ether imide)(PEI), poly vinilidene fluoride (PVDF) and polyacrylonitrile (PAN) on magnesium AZ31 alloy sheets in described. The coatings were prepared by spin-coating and dip-coating, using different solutions of the polymers, and the parameters related to the performance of these coatings was investigated by techniques as electrochemical impedance spectroscopy, infrared spectroscopy, x-ray photoelectron spectroscopy and scanning electron microscopy. Special attention was given to interfacial interactions between substrate...