|
Letter 8074
EN on NiCr
+
I am being asked to electrolessly plate Ni on a NiCr sputtered
alloy. I have tried an 30% HCl dip to strip off the native oxide but
the EN won't initiate. The features are small, 3 uM openings through
a spun on resist pattern. I have also tried a buffered HF solution
(10:1) to expose the Ni in the NiCr alloy but to no avail.
Suggestions anyone?
Patrick Franklin
Indigo Systems - Santa Barbara, CA
+
Try next:
- (1) Reverse etching in sulfuric acid for 60s,switch polarity
and
- (2) Direct etching for 30s
- (3) Reverse for 30s
- (4) Direct for 10s.
If you have Nickel strike, plate 2-3 min. rinse and put in EN
Reverse mean parts is connected to positive pol on rectifier
Mico
- Vancouver
Dear Reader, please --
- Post a
question on a different subject.
-
- Answer this question (in non-commercial
fashion).
-
 |