The effect of molybdate on corrosion resistance of the conventional low-carbon reinforcing steel (LC steel) and a Cr-bearing reinforcing steel (10% Cr steel), when exposure to saturated Ca(OH)₂ solution simulating concrete pore environment with low molybdate to chloride ratios, was investigated by using various electrochemical measurements and surface characterization techniques. The results show that a small amount of molybdate could delay the corrosion process of both steels effectively in the presence of high chloride concentration, and the improved inhibition efficiency is highlighted with increasing molybdate to chloride ratio from 0.01 towards 0.1. Also, it is further confirmed that, in the condition of alkaline solution with high chloride concentration, 10% Cr steel has significantly higher corrosion resistance than LC steel, regardless of molybdate. Finally, the inhibition mechanisms of molybdate for both steels are proposed in chloride-contaminated alkaline concrete pore solution.

当暴露于饱和Ca（OH）₂时，钼酸盐对常规低碳增强钢（LC钢）和含Cr增强钢（10％Cr钢）的耐腐蚀性的影响通过使用各种电化学测量和表面表征技术，研究了以低钼酸盐与氯化物之比模拟混凝土孔隙环境的溶液。结果表明，在高氯化物浓度下，少量钼酸盐可以有效地延迟两种钢的腐蚀过程，并且随着钼酸盐与氯化物的比例从0.01增加到0.1，改进的缓蚀效率得到了强调。此外，进一步证实，在氯化物浓度高的碱性溶液的条件下，不管钼酸盐如何，10％Cr钢的耐腐蚀性都比LC钢高得多。最后，提出了钼酸盐对两种钢在氯化物污染的碱性混凝土孔隙溶液中的缓蚀机理。