合金元素对铝基牺牲阳极性能影响的研究

EFFECTS OF ALLOY ELEMENTS ON PROPERTY OF Al-BASIC SACRIFICIAL ANODE

于1988年5月在实验室内，利用正交试验的配比方法研究不同含量的Zn，In，Bi，Ti对Al基牺牲阳极在海水中的性能的影响。通过对牺牲阳极的电流效率、工作电位及腐蚀产物附着情况等项性能的正交计算，得出结论：Zn含量为4．5％，In为0．03％，Bi为0．01％，以及Ti为0％时Al基牺牲阳极的各项性能都呈现为最佳值。

Using the orthogonal method 9 types of Al-basic anodes with different amounts of Zn, In, Bi and Ti were studied in laboratory (in 1988). Anodic closed circuit potential, discharge capacities and current efficiencies were measured in seawater.The test results showed that the closed circuit potentials of the 9 types of anodes were different. The most negative potential was ~1.10V (S. E. C.) and the most positive was -0.93V. Their actual discharge capacities were obviously different .Nos. 6, 8 and 9 anodes had higher current efficiencies of about 93.5 %. No. 3 anode had the lowest current efficiency of only 64.1 %. Calculated results showed that the optimum content of alloy elements is as follows: Zn, 4.5 %; In, 0.03 ％; Bi,0.01 ％; Ti, 0％, Al balance.