In order to obtain the tribological properties of nano-montmorillonite (MMT) /In lubricant additive on steel- bronze tribo-pair.1:1 MMT/In composite nano-powders were prepared by nano-MMT and nano-In modified with coupling agent opi all your dreams in vending machines KH550, and the nano-MMT/In lubricating oil dispersion system was prepared by 150

Chromium dioxide CrO_{2} belongs to a class of materials called ferromagnetic half-metals, whose peculiar aspect is that they act as a metal in one spin orientation and as a semiconductor or insulator in the opposite one.Despite numerous experimental and theoretical studies motivated by technologically important applications of this material in spi