A method for testing the thermal shock resistance and apparatus for testing the thermal shock resistance

摘要

A ceramic body using a furnace is heated to a predetermined temperature, and a cooling gas is in the direction of a first end face of the ceramic body is ejected in such a way that the first end face of the ceramic body is cooled. At this time, the temperature of the first end face of the ceramic body with a radiation thermometer, the on the same side is provided, on which the cooling gas is ejected, measured, and the internal temperature is with a thermocouple, which is provided in the ceramic body, measured. Thereafter, a temperature shock resistance test in which the actual operating conditions are simulated by means of obtaining of the temperature gradient of the ceramic body from the measurement results of the temperature of the first end face of the ceramic body and the internal temperature and checking of the absence or the presence of cracks in the ceramic body is carried out.