Progress in Research on Photo-cathodic Protection

Cathodic protection technology is one of the main technologies of metal corrosion and protection.As a new technology of cathodic protection,photo-cathodic protection technology is widely concerned in recent years by domestic and foreign scholars.Semiconductor films can be used as a permanent protective coating in photo-cathodic protection process.TiO2 has more advantages in photo-cathodic protection technology because its unique photoelectric properties,good stability,nontoxic and cheap characteristics.This paper reviews the superiority of photo-cathodic protection technology,focuses on the preparation and research status of TiO2 film in the field of photo-cathodic protection,puts forward the existing problems and development direction in the future.