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采用稳态阳极极化曲线法研究了１Ｃｒ１８Ｎｉ９Ｔｉ不锈钢在含Ｃｌ－及ＨＣＯ－３体系中的腐蚀行为。结果表明：ＨＣＯ－３对不锈钢孔蚀的抑制作用由其与Ｃｌ－的浓度比决定。此浓度比高于临界浓度比时，ＨＣＯ－３缓蚀作用很显著；低于时ＨＣＯ－３基本无缓蚀作用。不同的ＨＣＯ－３浓度有不同的临界浓度比
The corrosion behavior of 1Cr18Ni9Ti stainless steel in Cl- and HCO-3-containing systems was investigated by steady-state anodic polarization curves. The results show that the inhibitory effect of HCO-3 on the corrosion of stainless steel is determined by its concentration ratio with Cl-. When this concentration ratio is higher than the critical concentration ratio, the corrosion inhibition effect of HCO-3 is significant; when it is lower than that of HCO-3, it has no corrosion inhibition effect. Different HCO-3 concentrations have different critical concentration ratios