Letter 27062

Selective etching of aluminum oxide  

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I wanted a method for Etching aluminum oxide without affecting aluminum. Work being done in chip design.

Senthil Velan
student research - Columbia, MO, USA

The chromic-phosphoric acid mixture used to strip anodized coatings should selectively remove aluminum oxide from aluminum. Use our search engine with the search term "strip+anodizing+chromic-phosphoric"

Ted Mooney, P.E.  finishing.com Brick, New Jersey

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