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pinhole test with HCl + Coper(II) Sulfate

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pinhole test with HCl + Coper(II) Sulfate

Post  SK584 on Thu Mar 24, 2011 4:59 am

We do pinhole tests on aluminum folios with using two different concentrations of
H2O + HCl(%37) + CuSO4 solution.

first solution with;
50 ml HCl + 10 gram CuSO4 in 1000 ml solution

the second solution is ;

100 ml HCl + 50 gram CuSO4 in 1000 ml solution.

but we observe more corosion on aluminum folios with first solution in spite of the existence of less HCl. why?

SK584

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