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Re: The hardest possible substance known to man?
If you want a forever capsule then Hastelloy C-2000 or Inconel 686, the most corrosion-resistant alloys commercially available. Green Death, Yellow Death, boiling concentrated sulfuric acid, molten alkali... corrosion rates of a few mils/year. Single phase, austenitic, low-carbon, nickel-chromium-molybdenum-tungsten alloys. Hastelloy C-2000 contains copper rather than tungsten.
Organics and carbon composits (kevlar, spectra, zylon, carbon fiber) are destroyed by sunshine. Brittle ceramics and inorganics break. Look up the ceramics used to make turbines in automobile turbochargers.
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Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz4.htm |
