—2是苏联设计的一种应力腐蚀试验仪。它是利用显微镜观察和电化学测量的方法来研究金属材料在应力下的腐蚀破裂。这种仪器的特点是试样在腐蚀介质中经受一定负荷(负荷可以恒定,也可以逐渐增加)后,可以用显微镜随时观察和拍摄试样表面上任何部位的破裂发展情况,同时还可以用毛细管测量任何部位的电极电位 -2 is a stress corrosion tester designed by the Soviet Union. It is the use of microscopic observation and electrochemical measurement methods to study the corrosion of metal materials under stress rupture. This instrument is characterized by the sample in the corrosive medium to withstand a certain load (the load can be constant, can also be gradually increased), you can use the microscope at any time to observe and capture any part of the specimen surface rupture development, but also can use capillary Measure the electrode potential at any location