Etchant | Conc. | Conditions | Comments |
---|---|---|---|
Distilled water or Ethanol
Hydrochloric acid |
100 ml
1-5 ml |
Several minutes |
Zinc and zinc alloys |
Distilled water
Sodium Hydroxide |
100 ml
10 gm |
1-5 seconds | Low alloy zinc and pure zinc |
Distilled water
CrO3 Na2SO4 |
100 ml
|
Seconds |
Swabbing |
Zinc-aluminum alloy, 200X B.F., (etchant CrO3, Na2SO4) |