Activation of passivated titanium anodes from the electrolysis of MnO2
Activation of passivated titanium anodes from the electrolysis of MnO2
复制标题
MnO2 电解活化钝化钛阳极
DOI：
10.1007/bf01092606
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发表时间：
1992
影响因子：
2.9
通讯作者：
R. Ekern
中科院分区：
文献类型：
--
作者：
M. E. Armacanqui;R. Ekern
有或没有 MnO2 预涂层的钛阳极在电解二氧化锰沉积过程中被钝化，随后通过阴极还原被激活。钝化期间和阴极还原期间钛电压的时间依赖性由表面的初始状态决定。在预涂层厚度相同的情况下，非活化钛的钝化速度比活化钛快得多。对钝化阳极施加阴极电流导致预涂层的分离和预涂层下方的钝化膜的减少。在预涂钛上生长的钝化膜的还原似乎比在未预涂钛上生长的膜的还原要小得多。
Titanium anodes with and without a MnO2precoat were passivated during deposition of electrolytic manganese dioxide and subsequently activated by cathodic reduction. The time dependance of the titanium voltage during passivation and during cathodic reduction was determined by the initial state of the surface. Nonactivated titanium passivated considerably faster than activated titanium with the same thickness of precoat. The application of cathodic currents to passivated anodes caused detachment of the precoat and reduction of the passivating film underneath the precoat. Reduction of the passivating film grown on precoated titanium seems to occur at a much smaller rate than reduction of the film grown on unprecoated titanium.