Unusually seldom stepping out in the nature substances magnificent oneself harder than the diamond - "New Scientist"informs.
The diamond passes for the hardest from all substances in the general opinion. However investigations conducted by Zichenga the Lord from the university Jiao Tong in the Shanghai showed that two natural substances were clearly harder. Applied in twardościomierzach was studied for the help of the computer simulation, how they would react on the pressure of the blade.
First of studied materials this WBT - the change of the nitride of the boru about the structure resembling the diamond which comes into being during the eruption of volcanoes. The percentage is more resistant than the diamond about 18. Second this lonsdaleit, stepping out among others in falling on the surface of the Ground graphite meteorites heksagonalna change of the diamond - the atoms of the carbon are arranged in the different way, thanks to what the hardness in her the percentage is larger as much as about 58.
Both step out substances so seldom and in so small quantities, that scientists until now did not pass the matter from their unusual mechanical proprieties. If laboratory investigations confirm the results of the simulation, then the title will belong the hardest from all substances to lonsdaleitu. However WBT about how much - he will be successful to work out the suitable method of his synthesis - the wider use can find because he is more resistant chemically. One could execute the endings of tools cutting off and bits from him, and also produce protective coats.
WBT
Bullet-proof gel
The British Ministry Defence rewarded 100 000 pounds the small firm which worked out innovatory gel hardening under the influence of uderzenia. The substance about the name d3O hardens, absorbing the gigantic part of the kinetic energy of the striking object instantly.
He probably will hit to the helmets in which he can reduce the energy of striking bullet or splinter about 50%. Inconceivable, that helmets will not be become to be pierced thanks to her.
Richard Palmer who invented the unusual gel explains that during slow movement, his molecule they move in relation to each other freely. However they absorbing energy in the case of strong hit violently.
D3O is applied in sport equipment, such e.g. as helmets for skiers from certain time already. He can now hit to the army.
source : Telegraph
