Mobility of lithium ions in anodic alumina formed on an Al-Li alloy
Mobility of lithium ions in anodic alumina formed on an Al-Li alloy
复制标题
锂离子在铝锂合金上形成的阳极氧化铝中的迁移率
DOI：
10.1016/s0010-938x(99)00130-4
复制
发表时间：
2000
影响因子：
8.3
通讯作者：
K. Shimizu
中科院分区：
文献类型：
--
作者：
K. Tzoganakou;P. Skeldon;G. Thompson;Xiaorong Zhou;U. Kreissig;E. Wieser;H. Habazaki;K. Shimizu
通过辉光放电发射光谱和弹性反冲检测分析测量薄膜成分，确定了在五硼酸铵电解质中Al-3at% Li合金上形成的阻挡阳极膜中锂物种的迁移率。结果表明，在整个阳极膜的厚度的锂物种的存在下，与在合金中相比，在膜中的锂的量减少。锂含量的降低水平表明，锂物质向外迁移的速度比Al 3+离子快约8倍。锂物质在到达膜/电解质界面时损失到电解质中，导致膜生长效率的轻微损失。相比之下，铝物种保留在膜内，如由硼在膜厚度的外表面40%中的分布所揭示的。氢分布的测定表明膜中的氢量微不足道。
The mobility of lithium species in the barrier anodic film formed on an Al-3 at% Li alloy in ammonium pentaborate electrolyte has been determined from measurements of film composition by glow discharge optical emission spectroscopy and elastic recoil detection analysis. The results reveal the presence of lithium species throughout the thickness of the anodic film, with a reduced amount of lithium in the film compared with that in the alloy. The level of reduction in lithium content indicates that lithium species migrate outward about eight times faster than Al3+ions. The lithium species are lost to the electrolyte on reaching the film/electrolyte interface, leading to a slight loss in the efficiency of film growth. In contrast, aluminium species are retained within the film, as revealed by the distribution of boron in the outer ∼40% of the film thickness. Determination of hydrogen profiles indicates insignificant amounts of hydrogen in the film.