(接上期)对整个电化学除油过程的机理可简述如下:当把粘附有油膜的金属制品浸入碱性电解液中时,由于油与碱液间的界面张力减少,油膜就产生了裂纹。与此同时,电极由于通电而极化。电极极化虽然对非离子型的油类没有多大作用,但是,它却使金属与碱液间的界面张力大大降低,因此,很快地加大了二者的接触面积(碱液对金属的 (Continued) The mechanism of the entire electrochemical degreasing process can be summarized as follows: When immersing a metal film with an oil film in an alkaline electrolyte, an oil film is generated due to a decrease in the interfacial tension between the oil and the alkali crack. In the meantime, the electrode is polarized due to energization. Although electrode polarization does not contribute much to non-ionic oils, it greatly reduces the interfacial tension between the metal and the alkali, thereby quickly increasing the contact area between the two