A MEMS Clearinghouse® and information portal
for the MEMS and Nanotechnology community
RegisterSign-In
MEMSnet Home About Us What is MEMS? Beginner's Guide Discussion Groups Advertise Here
News
MEMSnet Home: MEMS-Talk: Al2O3
Al2O3
2007-10-10
jpt sharma
2007-10-10
Gary Hillman
Is there an EVG user group?
2007-10-10
Edward Sebesta
2007-10-11
Nodes Norbert
2007-10-12
amit asthana
Al2O3
amit asthana
2007-10-12
Dear Sharma ji,

There are many etchant for Alumina. The best one is the Potassium
Carbonate and Potassium bicarbonate mixture. This has been reported by
Team of IBM.

Another good etchant is mixture of Phosphoric acid H 3PO4 and Chromic
acid solution. To prepare this solution you can take 7 ml of
Phosphoric acid and add 4 gram of Cr2O3.

Or another way is to etch Alumina by NaOH and EDTA solution. Alternate
to NaOH is Tetramethylammonium hydroxide solution.

Bye the way, what type of Alumina you are using? Anodized Alumina or
Amorphous Alumina ceramic sheet? If it is Anodized Alumina, you can
find number of report / papers on this topic. Try sciencedirect or
scifinder for that....

HF will certainly not work.

Hope this will help you.

Best

Amit

> ---------- Forwarded message ----------
> From: jpt sharma 
> To: [email protected]
> Date: Wed, 10 Oct 2007 08:57:07 -0700 (PDT)
> Subject: [mems-talk] Al2O3
> I am looking for the AL2O3 wet etch chemical. Can anyone suggest me the
chemical and vendor?

--
Dr. Amit Asthana
Brain-pool Scientist
Institute of Applied Chemistry and Biological Engineering
(IACBE), Polymer Derived Ceramic Material Lab,
Chungnam National University, 220 Kung-Dong, Yusung-Gu
Daejeon, 305-764, South Korea.
Phone: 042 821 8920 / 7684 (office)
Fax:     042 823 6665
Email: [email protected]
          [email protected]
reply
Events
Glossary
Materials
Links
MEMS-talk
Terms of Use | Contact Us | Search
MEMS Exchange
MEMS Industry Group
Coventor
Harrick Plasma
Tanner EDA
Addison Engineering
The Branford Group
University Wafer
MEMStaff Inc.