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Anonymous Poster #1

Chemical Removal of AR-Coating From Zinc Sulfite (ZnS) Substrate

01/24/2019 8:25 PM

I have dome (6" diameter & 4" height) shaped ZnS substrates.

Coated both sides ( CX & CC) with YF3/ZnS/MgF2 ( 10 -20 layer coating in IR region).

I need to remove these coatings without damaging ZnS-dome.

I'm in USA working in a sophisticated Lab.

Anybody has any idea?

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Anonymous Poster #2
#1

Re: Chemical removal of AR-Coating from Zinc Sulfite (ZnS) substrate.

01/24/2019 9:13 PM

Send it to an even more sophisticated lab.

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#2

Re: Chemical removal of AR-Coating from Zinc Sulfite (ZnS) substrate.

01/24/2019 9:42 PM
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#3

Re: Chemical removal of AR-Coating from Zinc Sulfite (ZnS) substrate.

01/24/2019 10:09 PM
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#4
In reply to #3

Re: Chemical removal of AR-Coating from Zinc Sulfite (ZnS) substrate.

01/25/2019 12:23 AM
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#8
In reply to #4

Re: Chemical removal of AR-Coating from Zinc Sulfite (ZnS) substrate.

02/01/2019 3:33 PM

I did go through the article, but no help!

Thank you.

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#7
In reply to #3

Re: Chemical removal of AR-Coating from Zinc Sulfite (ZnS) substrate.

02/01/2019 11:41 AM

Yes! I did go through this Article, but no help!

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#5

Re: Chemical Removal of AR-Coating From Zinc Sulfite (ZnS) Substrate

01/25/2019 1:04 PM

MgF2 dissolves in water, don't know about the ZnS.

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#6

Re: Chemical Removal of AR-Coating From Zinc Sulfite (ZnS) Substrate

01/26/2019 2:00 PM

Send it to/dev/null.

Problem solved.

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#9

Re: Chemical Removal of AR-Coating From Zinc Sulfite (ZnS) Substrate

03/16/2019 4:29 PM

Select something that dissolves the coating without dissolving the substrate. All that is needed is either a corrosion chart or a few sample tests in the <...sophisticated laboratory...>.

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