Summary for zrN coating removal Discussion
ZrN coating removal is the core issue in this thread, with the original question asking for the right way to strip zirconium nitride PVD coatings. In the follow-up, Kerim Erbil уточifies that the stripping problem involves two very different substrates: brass parts, stainless steel, and also PVD machine hardware such as hangers, satellite tables, and shields. He notes the PVD system uses Zr and Cr/W targets with nitrogen and acetylene gases. The excerpt shown does not include a technical stripping method or a final answer, only the request and clarification. Ted Mooney, P.E. is identified in the thread header, but no specific stripping advice from him appears in the provided text. Because the excerpt is incomplete, the safest takeaway is that the discussion is about finding a stripping process suitable for both brass and stainless steel without damaging the base materials or equipment.
2000
Q. I have a problem to remove the ZrN coatings applied by PVD.
Please inform about the right way for stripping ZrN.
Esteban Cabrito Martinez
– Guipuzcoa, Spain
A. Hi Esteban
You can remove PVD ZrN coating films with a solution of HF (10%).
JosÈ Francisco Costa
– Aveiro – Portugal
2000
A. You can remove ZrN coating with Dico stripper. We buy this in Germany. It is a stripper that I use in my factory. It is made of ammonium hydrogen difluoride.
Helder Lima
– Braga – Portugal
2003
Q. Hi, I couldn’t get any information on Dico Stripper. Maybe it’s a long time. Can you share if there is new information on this removal? I need support for the removal of PVD coatings.
Kerim Erbil
Roca Tr Bath – ESKISEHIR,TURKEY
December 25, 2018
A. Hi Kerim. Yes, 13 years is a long time; plus ‘Dico’ may have been a typo and, even if not, it’s such a common name that I could find nothing in a practical amount of time. But you need to specify exactly what PVD coating you need to strip from what substrate material, and what type of part (for example is it a tiny finely-detailed component such that abrasive stripping is impossible, or is it a sheet of building siding which came out the wrong color?)
Meanwhile, thread 5007 offers a lot of help, as does:
https://www.pfonline.com/articles/stripping-pvd-coating
and
https://www.iom3.org/materials-world-magazine/news/2007/jan/01/stripping-processes-hardwearing-coatings
Good luck!
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
December 2018
January 2, 2019
Q. Dear Mr. Mooney,
First of all, thank you very much for your response.
We want to strip PVD Coating from two different base materials.
1) Base material (brass)
2) Stainless steel Equipments of PVD machine (hangers, satellite table, shields etc …)
We use Zr, Cr / W targets.
We are using Nitrogen and Acetylene gases.
Sincerely Yours
Kerim Erbil [returning]
– Odunpazari, Eskisehir, Turkey
Ed. note: This RFQ is outdated, but technical replies are welcome, and readers are encouraged to post their own RFQs. But no public commercial suggestions please ( huh? why?).