Summary for dlc stripping Discussion
DLC stripping with a Ti underlayer is the central issue in this thread. Tony asked how to remove diamond-like carbon from stainless steel after concentrated HF showed no effect, and wondered whether high-temperature burning or another method would work. Chandra Venkatraman answered that DLC coatings with a titanium underlayer can be removed by reactive ion etching, describing it as a reactive plasma-based process that is very successful at stripping both the DLC and the metal underlayer without ruining the substrate, though minor post-removal polishing may be needed. A later RFQ from Grace S asked about ash-off services for DLC on tungsten carbide parts without damaging the carbide surface. The editor noted the RFQ was outdated but invited technical replies, while discouraging public commercial suggestions. Overall, the thread points to plasma-based removal as the practical answer rather than chemical stripping with HF.
Q. I am looking for a method to strip DLC with Ti underlayer on a stainless substrate. I tried to used concentrated HF solution, but there is no chemical stripping action even after an hour! Some people say burning DLC at high temperature can do this, but is there any other experience success in doing this?
Tony [surname deleted for privacy by Editor]
CUHK – Hong Kong
2003
A. DLC coatings with an underlayer of Ti can be stripped by reactive ion etching. The process is a reactive plasma based process and is very successful in removing the DLC coating and metal underlayers without ruining the substrates. Some post removal polishing may be required, but it would be minor.
Chandra Venkatraman
Bekaert – Amherst, New York
2005
RFQ: We have some Tungsten Carbide parts coated with Diamond-like-carbon(DLC) coating. As time goes on, we will periodically need to peel off this DLC coating–without damaging the tungsten carbide surface. I heard of a method of ashing-off the carbon coating. Do any of you know such a place that provides this service? Your responses are highly appreciated.
Thanks in advance.
Grace S [surname deleted for privacy by Editor]
– Columbia, South Carolina
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 note: This RFQ is outdated, but technical replies are welcome, and readers are encouraged to post their own RFQs.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?).