Galvanizing
Notes from Jakob (may need refinement)
- copper sulphate
- solution a (copper sulphate)
- solution b
- solution c: caustic soda and formaldehyde
heating plate
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medium to be electroplated
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monodistilled (once distilled) water
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fill with water
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heating plate underneath (with magnetic stirrer)
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put thermometer (sensor) on top
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heat to 50 degrees
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add ingredients according to recipe in order.
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todo: translate recipe
pre-treatment of plate
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hso degreaser
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caustic soda and disodium tasylate plus something like fit
- degrease
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this forms very small oxide layers. we want to rinse these off
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rinse (with water)
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put the piece in solution
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how thick should the layer be?
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3 to 8 μm per hour
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the bath is set to slow. why? because the bath is there to do selective coating. that means you want to coat one part and not others.
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3d printed circuit boards can also be made with it. can be injection molded and then coated in electroplating
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3d plastic: copper particles in plastic. expose with a laser and electroplate.
- 3d mid
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process only works because there is a bit of copper on the surface. the copper acts as a catalyst.
if i now want to electroplate a sheet, i have to dip it in a solution beforehand so that a metal layer is deposited on it.
- the following would be possible:
- palladium, silver etc. the only question is how to get it onto the surface
- we use palladium because it's a very good catalyst. it's a very good catalyst because it can be plated with
