本文应用软硬酸碱原则研究了双组份有机缓蚀剂的协同效应.实验表明:某些复合缓蚀剂的协同效应,从软硬酸碱原则看是由于有机缓蚀剂与被保护金属之间有较好的酸碱软硬度的匹配关系.复合缓蚀剂的软硬度与被保护金属的软硬度匹配好的则有较好的协同效应;反之,则无协同效应.这种“软硬匹配的协同效应”,目前还未见文献报导过. In this paper, the synergistic effect of the two-component organic corrosion inhibitor was studied by using the principle of hard and soft acid-base. The experimental results show that the synergistic effect of some complex corrosion inhibitors is due to the fact that the organic corrosion inhibitor and the protected metal Between the hardness of the composite corrosion inhibitor and the hardness of the metal to be protected is better match the good synergistic effect; the other hand, there is no synergistic effect. The kind of “soft and hard matching synergies” has not been reported in the literature.