Material Coatings Question

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cmnky26 Associate Join Date: Jan 2007 Location: NoVA Posts: 45	Material Coatings Question 01/23/2007 4:10 PM
	Greetings CR4, I have a design problem regarding a protective coating for two different materials I'm working with... The materials being 7-32C AISI Alloy (33xx-93xx Alloy Steel), and C17510 Copper Nickel Beryllium per ASTM-B-441. Design requirements include: - The coating needs to have a thickness of no greater than .0025" - Requires a dielectric of at least 1000 Volts. - Withstand ambient temps of >-40 to >200 deg F. - Impervious to super-tropical bleach, which consists of a mixture of chlorinated lime and calcium oxide. So far the options I have include Kapton(R), possibly Teflon(R), or Halar(R).... might any of you material guru's out there have any other suggestions? TIA :)
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aurizon Guru Join Date: Jun 2006 Location: Toronto Posts: 3968 Good Answers: 120	#1 Re: Material Coatings Question 01/23/2007 11:17 PM
	The biggest problem you will have is called 'pinholing'. A tiny unwetted area of a bubble that pops later. They useally do this with 10 very thin layers of wire enamel based on silicone, but others will also work. Contact http://www.siigroup.com/products.asp#Products_by_Application_or_End_Use __________________ Per Ardua Ad Astra
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CoolHandGene Member Join Date: Jan 2007 Posts: 5	#2 Re: Material Coatings Question 01/25/2007 12:24 PM
	Have you heard of DLC (diamond-like carbon)? I am the plant engineer at a company that does industrial coatings. Most of the coatings we offer are thermal spray or weld, which we typically much thicker than .0025" (.01-.25"). We also offer DLC which is very thin and applied by the vapor deposition process. It may be too thin for your needs, but you can check it out at our website, parkwaykew.com -- we call it PK-4000X.
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cmnky26 Associate Join Date: Jan 2007 Location: NoVA Posts: 45	#3 In reply to #2 Re: Material Coatings Question 01/29/2007 10:26 AM
	Very interesting! tyvm :)
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aurizon (1); cmnky26 (1); CoolHandGene (1)

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