KRYPTONATION TECHNIQUE AND ITS APPLICATIONS

This paper describes the kryptonation technique and its applications. ~(85)Kr on the surface of metals would not escape unless the surface temperatureis higher thanthe orlginal heatingtemperature. According to this pKncipal, the highest working temperature and theirdistribu- tion on the machine parts couldbe measured. The range and accuracy of the measured temperature is 1000℃±5℃. This technique combined with autoradiography could be utilized in failure analysis of the working parts, The advantages are high sensitivity, which enables the surface microcracks to be revealed with the opening width as fine as 0.05 μm, and the possibility of nondestructive detection of surbsurface microdamages.