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CHEMICAL ETCHING FOR STAINLESS STEEL

2002

Dear sir:

We would like to etch copper at present we are using ferric chloride [on eBay or Amazon] in conveyorized etching machine under heat & spray pressure we would like to reduce etching time can we go for electro chemical immersion reverse voltage method.

We tried with carbon cathode, 30% ferric chloride[on eBay or Amazon]solution,operating voltage 2Volts,though it etches copper the edges are not uniform.

Kindly suggest electro chemical immersion reverse voltage method with details like

1.what is the anode?
2.what is the percentage of ferric chloride [on eBay or Amazon]?
3.what is the operating voltage?
4. how many microns will it remove at these condition?

With high regards,

Ramesh.R
- HOSUR, TAMIL NADU, INDIA

dear sir,
we want to etch austenitic stainless steel
please indicate the etchants?
where can we get the electro etching equipment?
thank you.

suresh varma
scientist,AFFF,BARC,Tarapur - Mumbai, Maharashtra,inida
2007

June 17, 2008

Dear Sir:

I am stuck with the processing of GaAS.

I have wafer of GaAs and onto the top it Stainless Steel is coated.

How could I etch the stainless steel coating?

Would you please suggest me?

With best regards,
Zahid Mahmood
Associate Professor
Applied Physics, Electronics and Communication Engineering
University of Dhaka

Zahid Mahmood
Process scientist - Bangladesh

Sir ,
What is the diff between cp grade ferric chloride[on eBay or Amazon]and lab grade ferric chloride [on eBay or Amazon], does lab grade will etch fast when compared to cp grade.

Kishore K
galvonics - Bangalore, Karanataka, India
August 22, 2008

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