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Specific Process Knowledge/Etch/Wet Titanium Etch: Difference between revisions

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==Wet etching of Titanium==
==Wet etching of Titanium==
[[Image:Stinkskab RR2.jpg|250x250px|thumb|Fumehood(RCA) in cleanroom B-1. <br />Wet etching of titanium can be done in the "HF5%/BHF-dirty" bath in this fume hood]]
[[Image:Fumehood1-2.jpg|300x300px|thumb|Fume hood 01 and 02 in Cleanroom D-3 for working with acids and bases.<br>Wet etching of titanium can be done in beakers with BHF or RCA1 mix in a beaker in one of these fume hoods]]
[[Image:Fumehood1-2.jpg|300x300px|thumb|Fume hood 1 and 2 for acids and bases in cleanroom D-3. <br />Wet etching of titanium can also be done in beakers with BHF or RCA1 mix in a beaker in one of these fume hoods]]


We have two solutions for wet titanium etching:
We have two solutions for wet titanium etching:
    
    
# BHF (wetbench or fumehood)
# BHF (beaker in fumehood)
# Cold RCA1 (fumehood)
# Cold RCA1 (beaker in fumehood)
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Etching titanium in BHF can take place in the 'HF5%/BHF-dirty' bath inside Fumehood(RCA) in cleanroom B-1. This is the only pre-made BHF bath where metals are allowed. You can also do the titanium etch in BHF or RCA1 mix by making your own solution in a beaker in Fumehood 01 or 02 in cleanroom D-3. You can see the APV [http://labmanager.danchip.dtu.dk/d4Show.php?id=2479&mach=146 here].
Etching titanium in BHF or RCA1 mix is made by making your own solution in a beaker in either Fumehood 01 or 02 in Cleanroom D-3. You can see the APV [http://labmanager.danchip.dtu.dk/d4Show.php?id=2479&mach=146 here].




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!Allowed materials
!Allowed materials
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Practically no restrictions when used in beaker or 'HF5%/BHF-dirty' bath in Fumehood(RCA) in cleanroom B-1.  
Practically no restrictions when used in beaker. Make sure to use a plastic beaker, since glass will be attacked by BHF/HF.  
Make a note on the beaker of which materials have been processed.  
Make a note on the beaker of which materials have been processed.  
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