What kind of coatings are there for the copper products?
What kind of coatings are there for the copper products?
(OP)
Hello,
so the coatings which I already know about:
- Chemical nickel plating
- Galvanic nickel plating
- Chrome plating
- Sn and Zn plating
- Gold and silver plating
- PVD plating
Are there any more that im missing?
I have lots of experience with Nickel plating, but the problem is since the product must be pretty nice (decorative), there can be many mistakes and anomalies with it which are not acceptable. So if possible im searching for a more robust technology.
What im searching for:
- Appearance (without stains, spots ...)
- Robustness against the surface defects
- Stable process
- The coating must be corrosion resistant (5-9pH)
- Resistant to the effects of fingerprints
- The thickness of the coating must be even
- Covering defects on raw surfaces (if possible , not neccessary)
- Good application also on large products surface to about 6 dm2 max
ANY! suggestion is welcomed. Thank you!
so the coatings which I already know about:
- Chemical nickel plating
- Galvanic nickel plating
- Chrome plating
- Sn and Zn plating
- Gold and silver plating
- PVD plating
Are there any more that im missing?
I have lots of experience with Nickel plating, but the problem is since the product must be pretty nice (decorative), there can be many mistakes and anomalies with it which are not acceptable. So if possible im searching for a more robust technology.
What im searching for:
- Appearance (without stains, spots ...)
- Robustness against the surface defects
- Stable process
- The coating must be corrosion resistant (5-9pH)
- Resistant to the effects of fingerprints
- The thickness of the coating must be even
- Covering defects on raw surfaces (if possible , not neccessary)
- Good application also on large products surface to about 6 dm2 max
ANY! suggestion is welcomed. Thank you!
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RE: What kind of coatings are there for the copper products?
RE: What kind of coatings are there for the copper products?
Geometry is a CNC milled copper piece with up to 6 dm2. Lets say 2 dm x 1dm x 5 mm piece with small or bigger grooves all over the surface and also thread holes. Basically it is not flat. Also, the coating shouldnt be too thick to cover the threads (lets say max. 0.2 mm per wall).
RE: What kind of coatings are there for the copper products?
What are You protecting the copper alloy from? OR what alloy/material are You protecting from the copper alloy?
What temperature range?
It the copper part shape: simple or complex?
Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]
RE: What kind of coatings are there for the copper products?
Protecting from water.
Temperature range: -20°C - +100°C
Shape is complex, CNC milled with a lot of different grooves and bumps.
RE: What kind of coatings are there for the copper products?
What is your geometry? Clear coat paint or film sounds like your best option."
Is it possible that clear coating would be applicable for series production of a complex cnc milled object (with grooves and threads)?
RE: What kind of coatings are there for the copper products?
What water? Deionized/Distilled? Tap water with/without chlorides? With/without particulates? River water? Seawater?
Sometimes its ideal to consider alloys that would never need coatings in this a severe water environment, such as...
Naval copper alloys.
Copper-nickel [Monel] alloys.
Super Alloys.
NOTE. Se [selenium] in CRES alloys is now prohibited for MIL aerospace parts [IE: 303Se] due to cracking and corrosion in-service.
Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]
RE: What kind of coatings are there for the copper products?
As for grooves and threads, paint type coatings don't provide very uniform thicknesses and could cause issues with fits.
RE: What kind of coatings are there for the copper products?
Preferably for any water. It will be in contact with cooling agent, but it can also occur that 2% of time it will be in contact with normal water, so better to expect worse case scenario.
I would be happy if you could just list all the coatings there are (apart from those i already mentioned in the first post) and i will research them further and report which one i think will be the most suitable :).