Under fully deaerated condition, however, the inhibitory film consists of FeO, Fe_2O_3 and adsorbed B_4O_7~(2-) ions, and the borax acts as a mixing inhibitor.

• 膜的主要组成是在微薄的FeO、Fe_2O_3膜上吸附B_4O_1~(2-)离子,硼砂表现出混合抑制型缓蚀剂的特征。