Hi All
I found from web that HCl:H2O can etch Cr (shown
below). However, they need to touch substrate with
aluminum wire. I wonder if anyone know why we need to
use aluminum wire to touch substrate. Is there any
books or article talking about this phenomena? Thanks
in advance.
Chromium Etchant
* HCl:H2O2 (3:1) This will also etch gold
film.
* HCl:H2O (1:1) Heat to 50C, immerse
substrate
and touch with aluminum wire.
Chromium/Nichrome Etchant
* HCl:H2O2 (3:1) This will also etch gold
film.
* HCl and touch with aluminum wire.
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