I am aware that anodizing involves two competing reactions; the growth of the the anodic layer, and the dissolving (dissolution) of that layer by the action of the acidic (sulfuric acid) electrolyte.
It's obvious that the rate of layer growth is proportional to current density, but I have been...
Many claim that Type III (hardcoat) anodized layers are "harder" than Type II. If this is true, what is the difference in "hardness"? I'm not asking about durability or coating density per se . I'm looking for a number.
