Corrosion resistance test apparatus and corrosion resistance test method for coated metal material

A corrosion resistance test apparatus for a coated metal material that includes a metal base and a surface treatment film provided on the metal base, the corrosion resistance test apparatus comprising:

• one or two water-containing material holders disposed on the surface treatment film to hold a water-containing material that is in contact with the surface treatment film inside;
• one or two electrodes in contact with the water-containing material contained in the one water-containing material holder or in each of the two water-containing material holders;
• an external circuit configured to electrically connect between the electrode and the metal base, or between the two electrodes;
• a temperature control element that is brought into contact with the coated metal material via an insulating portion and configured to control a temperature of at least the coated metal material;
• a temperature controller connected to the temperature control element and configured to control a temperature of the temperature control element;
• and
• a current supplier provided on the external circuit and configured to supply a current between the electrode and the metal base, or between one of the two electrodes and the other, as an anode and a cathode, respectively to bring corrosion of the coated metal material to progress.