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+--- Thread: What happens when dilute sulphuric acid is poured on an aluminium plate? (/Thread-What-happens-when-dilute-sulphuric-acid-is-poured-on-an-aluminium-plate)
What happens when dilute sulphuric acid is poured on an aluminium plate? - mepehuxit - 04-12-2018
Sulfuric acid dilute sulfuric acid is a non oxidizing inorganic acid. It has slight chemical etching effect on aluminum alloy profiles, and has low use cost and less volatile acid fog. Sulphuric acid can dissolve and peel off the natural oxide film formed on the surface of aluminum and aluminum alloy, and the exposed aluminum alloy matrix reacts with sulphuric acid to activate the surface of aluminum. When the concentration of sulphuric acid in the bath is less than 30%, the chemical dissolution rate of aluminum increases slowly with the increase of sulphuric acid concentration, and the loss of aluminum is less. When the concentration of sulphuric acid exceeds 30% in the bath, the corrosion rate of aluminum accelerates rapidly, and it is easy to produce corrosion and decrease the brightness. Generally speaking, the concentration of sulfuric acid in the bath should not exceed 15%.
RE: What happens when dilute sulphuric acid is poured on an aluminium plate? - 1-LVDCPN - 04-12-2018
If the acid is dilute there will be little reaction as the surface is rendered inert by Al2O3 .