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在腐蚀发生率低,试样数量又不足够多时,用传统的计算方法不能得出合理的腐蚀发生率。根据一些逻辑推理,如在较短时间内发生了腐蚀的试样,或在较长时间内没发生腐蚀的试样,若将该试验时间延长或缩短,则仍应发生腐蚀或没发生腐蚀,推导出一种计算腐蚀发生率的近似方法。它不仅在腐蚀次发生率高,试样数量多时得到与传统方法完全一致的结果,而且在腐蚀发生率低,试样数量不够多时也能得到合理的结果。
In the low incidence of corrosion, the number of samples is not enough, the use of traditional calculation methods can not draw a reasonable rate of corrosion. According to some logical reasoning, such as a sample that has eroded in a short period of time or a sample that has not eroded in a long period of time, corrosion or corrosion should still occur if the test period is extended or shortened, An approximate method of calculating the incidence of corrosion is derived. It is not only in the high incidence of corrosion, the number of samples get exactly the same results with the traditional method, but also in the low incidence of corrosion, sample number is not enough can get reasonable results.