I'm new and i don't know a lot about led.
I'd like to build a MCPCB sheet.
I work in a galvanic industry and in a recent study I discover how to metallize over hard anodizing.
The aluminium is a 6000 alloy. The hard anodizing have a thickness of 40 micrometers.
From literature the breakdown voltage of 40 micrometers hard anodizing is more than 1000V. How can I test the breakdown voltage??
I chemically deposited a layer of 10 micrometers of nickel.
The next step is to electroplating a layer of copper.
My doubt is about the etching of the copper+nickel. What do you use to etch the copper of standard MCPCB?
The iron Chloride don't dissolve the nickel.Ammonia too. I etched the nickel layer with success with nitric acid but it require at least 20 minutes. I have to try it also with copper. My doubt is that nitric acid dissolve copper to fast and run underlayer.
The last question is about prices. How much cost actual MCPCB? i think my sheet could cost about 1,5 euro dm2. is it cheap?
Thank you in advance.