If i wanted to make a homogenous coating on a substrate but my raw materials is in powder AND it is 5mg or less (very few). How do I make the final coating?
I was thinking of spray coating - but I don't think my powder turned to slurry will be good for coating.
Any methods I can use to do this?
For more clarification - I have raw material, which is powder. I want to turn that powder into a uniform coating on a substrate. The substrate is ideally foil. How would I do this?
it is 5mg of graphite powder on ideally a foil surface/substrate. Usually an organic solvent is what I would want to use to turn it into solution.
The MAIN issue here is that I only have about 5mg to coat a small layer (0.6cm by 1.95cm) of my foil substrate. There are not many available information online that explain a method which can do this. Most coating techniques involve using raw materials larger than 5mg.
Would love references if there are any.
With so little material avialable, you might make a chance by charging the substrate and having the powder attracted to the substrate and then heat treat it (muffle). This is a effective technique used in the car industry and could give a nice uniform result.
You can try the doctor blade type, dry powder is difficult to adhere well with your foil. But for dry powders, you have to use some binders like PVDF/ other polymers. 5mg is very little to make any coating,
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