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评定一种金属在腐蚀介质中的耐腐蚀性,一般按照实际使用条件进行增重或失重试验,然后根据重量得失的多少来评定该金属的耐腐蚀性。这种试验方法可以定量地说明试样在一定温度,一定浓度等条件下的腐蚀趋势,但如果要说明试样中各个合金元素对耐蚀性的影响,或介质在不同温度和浓度时,对试样耐蚀性的影响,就需要进行一系列的试验。这样工作量不但很大,所需的时间亦长。有时失重的多少,也不能真实地反映试样是在指定浓度的介质中所失去的重量,因
To assess the corrosion resistance of a metal in corrosive media, generally according to the actual conditions of use for weight gain or weight loss test, and then according to the weight gain and loss to assess the corrosion resistance of the metal. This test method can quantitatively explain the corrosion of the sample at a certain temperature, a certain concentration and other conditions, but if you want to explain the corrosion resistance of the various alloy elements in the sample, or the medium at different temperatures and concentrations of Corrosion resistance of the sample, you need to conduct a series of tests. This workload is not only great, the time required is also long. Sometimes the weight loss, nor can it truly reflect the sample is the weight loss in the specified concentration of media, because