I am trying to etch pure copper which has been well annealed and rolled. The FeCl3+HCl+Water solution, although gives good results it does not give clean optical microstructures. The rolled specimens just shows pits even when the etching time is kept to a minimum. Can anyone suggest me alternative etchants to get good grain and twin boundaries by etching.
Atilla Atli
I generally use the mixture proposed by Akbar with a concentration of :
2,5 ml FeCl3 + 25 ml HCl+75 ml ethanol
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Rakesh Kumar Sharma
U can use the same solution of this composition ( 30%FeCl3 in water and put 10 % HCL of the total solution), For cleaning u can try some solution which I will tell u later if you need it.
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