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Etching Electroless Nickel

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harlequinir

harlequinir

Chemical
Oct 23, 2003
8
I need to find an acid etchant for nickel-phosphorous. I currently use a 50-50 mix of nitric acid and water plus some HF. I want a very rough surface, but need to protect a photoresist mask. Any info is appreciated.
 
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Have you tried a mixed acids etchant (hydrochloric, nitric and acetic, as per ASTM 403, etchant #89) or hot PAN (Phosphoric/Acetic/Nitric)?
 
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