为判断金属及镀层对大气的抗蚀能力,目前常用的方法仍为大气暴晒试验。但这种试验受复杂的自然条件影响,试验周期长,不能满足及时判断新材料(镀层)抗蚀性的要求。为此也采用室内加速模拟试验(如湿热、盐雾和人工气氛等)但仍感到不够及时。特别是模拟性、重现性较差,不能正确 To determine the corrosion resistance of metals and coatings to the atmosphere, the commonly used method is still atmospheric exposure test. But this kind of test is influenced by complicated natural conditions, the test period is long, can not meet the requirement of judging the corrosion resistance of the new material (coating) in time. Indoor accelerated simulation tests (such as damp heat, salt spray and artificial atmosphere, etc.) are also used for this purpose, but they still do not feel timely enough. In particular, the analogy, poor reproducibility, can not be correct