I have 2 questions, 1 about high pressure water cutting, and the 2nd one about hard minerals
In Autotech class today me and some friends were talking, the subject of using VERY high pressure water (30,000-90,000p.s.i.) to cut through objects. This one black guy did not believe me at all, he said you could cut through diamond with it, but it would take over 1000 years. I know im right about this, i just need some further evidence.
since we were talking about diamonds, i mentioned that diamond is no longer the hardest mineral, dolomite, graphete (i think?),can someone give me a list of naturally formed and man-made objects harder then diamond.
Posted Nov 8, 2011, 2:04 AM UTC
12
Dolomite has a hardness of about 3.5 on the Mohs scale, and graphite has a hardness of 1 to 2, so neither of them are anywhere close to diamond, which is 10. What you're probably thinking of is Lonsdaleite which is really just carbon with a hexagonal lattice structure instead of carbon with a body-centered cubic lattice structure (aka diamond.) That article states that due to impurities it only has a hardness of 7 - 8, but simulations imply that a pure sample would be harder than diamond, if such a thing existed.
Ahh futurama, YOU LIE TO ME!