【摘要】 本文提出了一个电化学方法来对铝基牺牲阳极在海水中的溶解性能进行定量描述。该法是将阳极试样在恒温的海水中用恒电位仪极化到一定电位,然后测其时间-电流曲线,用求积仪计算库仑密度。发现库仑密度与阳极表面溶解状态之间有很好的对应性,因而可以用来定量描述阳极的这一性能。更多还原

【Abstract】 The surface dissolved characteristics of Al basic sacrificial anodes in sea water have never been expressed numerically except in words such as uniform dissolution, non-uniform dissolution, serious localized dissolution, etc. An electrochemical method was developed in our laboratory to evaluate the above mentioned characteristics quantitatively. The Al anode samples are polarized potentiostaticaly to -1000 mV (vs. Ag/AgCl reference electrode) in sea water at 25±1℃, and anodic current-time curves are recorded simultaneously. Then the coulomb densities are calculated with a planimeter. By comparison of the coulomb density of these samples, the surface dissolved characteristics of anodes can be evaluated quantitatively.更多还原