引言对金属、椽胶、塑料,陶瓷的晶界腐蚀及分层等缺陷的检查,目前有一种全新的方法,这种方法操作简便、迅速。在有缺陷的材料中渗入一种低沸点液体(渗透液),然后放入一个盛有氟化物溶液的容器中(简称F液)加热,当被测材料加热到渗透剂沸点以上时,缺陷中的渗透剂就会沸腾,产生汽泡,于是缺陷就很容易检查出来。 Introduction There is an entirely new approach to inspection of defects such as grain boundary corrosion and delamination of metals, rafters, plastics, and ceramics. This method is easy to operate and fast. Infiltrate a low-boiling liquid (permeate) into the defective material and place it in a vessel containing the fluoride solution (referred to as Liquid F) for heating. When the material to be tested is heated above the boiling point of the penetrant, defects The penetrant will boil, producing bubbles, so defects can be easily checked out.