有关磷酸盐处理金属或在磷酸盐处理后又经涂饰的金属板的腐蚀试验方法,以往都需要很长的时间,一股说来,不经涂饰的磷酸盐处理钢板的试验,至少要用一天时间,在许多情况下,经磷酸盐处理后,又经涂饰的铁板,进行盐雾试验,要用240小时或336小时。在新的磷酸盐处理方法或后处理工序的研究中或在各种涂饰方法的试验中,由于过去的试验方法都是需要很长的时间,所以认为有害于工作的开展。美国Penna,Ambler的 Corrosion test methods for phosphated metal or metal plates that have been phosphated and finished have historically required a long period of time, at least one day for the test of uncoated phosphate-treated steel Time, in many cases, after phosphate treatment, coated iron, salt spray test, it takes 240 hours or 336 hours. In the study of new phosphating or post-treatment processes or in the testing of various coating methods, the previous test methods were considered to be detrimental to work because of the length of time required. American Penna, Ambler’s