Patent ID: 11913871
Assignee: MAZDA MOTOR CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for evaluating a physical property of a film-shaped measurement target object by means of an electrochemical method, comprising:
a step of causing an electrolytic solution to contact a front surface of the measurement target object,
a step of arranging a first temperature adjustment section configured to adjust a front-side temperature on a front side of the measurement target object;
a step of arranging a second temperature adjustment section configured to adjust a back-side temperature on a back side of the measurement target object; and
a step of setting a set temperature of the first temperature adjustment section higher than a temperature at which condensation of moisture in the measurement target object begins, and setting a set temperature of the second temperature adjustment section lower than the temperature at which condensation of the moisture in the measurement target object begins and higher than the temperature at which condensation of liquefied water begins,
wherein the measurement target object is a coating film of a coated metal material including the coating film on a base material,
the electrolytic solution is arranged in contact with a front side of the coating film,
the second temperature adjustment section is arranged on a back side of the coating film through the base material,
the physical property is corrosion resistance of the coating film, and
a voltage is applied to between the front side and the back side of the coating film while increasing, and the corrosion resistance of the coating film is evaluated based on a voltage value upon breakdown of the coating film.