Energetics Of Aluminium Alloys Anodization For
Porous Oxide Films Elaboration
Author(s)
G. Zamora, L. Arurault & R.S. Bes
Abstract
From recent published data relative to the anodization of 99.9% aluminium and
2024T3 alloy at a given value of the current density, it is established that the
energy density WIS is proportional to the anodization time t,. In order to
appreciate the applicability of such an empirical relation, we conduct the 1050A
alloy anodization at a given value of the anodization voltage V, (industrial
procedure) in three different electrolytes (borate, phosphoric acid and boric
acid/sulphuric acid). The proportionality coefficient k between WIS and t,
appears to increase with the anodization voltage V,, while the charge flow
density WV, is a linear function of the anodization voltage V,. The H3B03 +
&So4 electrolyte experimental data indicate, nevertheless, a sharp change of the
energy transfer from a critical anodization voltag
Keywords
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