Nanoscale tribological materials

The results of the development and testing of nanodiamond triboactive from Krasnoyarsk Institute of chemistry and chemical technology, Krasnoyarsk Institute of Biophysics together with "RealDzerjinsk", as well as the results of the development of the new triboactive based on nano carbon fibers. It is proved that in contrast to pure nanodiamond powders imported nanomaterials explosion technologies graphite represent pseudoalpina nanoparticles surrounded by a carbon shell. Saturating them various peripheral organic compounds can be sedimentary stable carbon clusters, working at friction in oil is not for mechanism sergiovanni, and the mechanism of chemisorption and polymerization components triborate. A new, more technologically advanced and cheaper tribological material GRAF SB on the basis of on nano carbon fibers, are no less effective nanodiamond, only works on mechanism of adsorption and chemisorption.

Composition of Carbon Clusters in Implanted Silicon Using Atom Probe Tomography

Atom probe tomography was employed to observe and derive the composition of carbon clusters in implanted silicon. This value, which is of interest to the microelectronic industry when considering ion implantation defects, was estimated not to exceed 2 at%. This measurement has been done by fitting the distribution of first nearest neighbor distances between monoatomic carbon ions (C+ and C2+). Carbon quantification has been considerably improved through the detection of molecular ions, using lower electric field conditions as well as equal proportions of 12C and 13C. In these conditions and using another quantification method, we have shown that the carbon content in clusters approaches 50 at%. This result very likely indicates that clusters are nuclei of the SiC phase.

Carbon clusters formed from shocked benzene

Benzene (C6H6), while stable under ambient conditions, can become chemically reactive at high pressures and temperatures, such as under shock loading conditions. Here, we report in situ x-ray diffraction and small angle x-ray scattering measurements of liquid benzene shocked to 55 GPa, capturing the morphology and crystalline structure of the shock-driven reaction products at nanosecond timescales. The shock-driven chemical reactions in benzene observed using coherent XFEL x-rays were a complex mixture of products composed of carbon and hydrocarbon allotropes. In contrast to the conventional description of diamond, methane and hydrogen formation, our present results indicate that benzene’s shock-driven reaction products consist of layered sheet-like hydrocarbon structures and nanosized carbon clusters with mixed sp2-sp3 hybridized bonding. Implications of these findings range from guiding shock synthesis of novel compounds to the fundamentals of carbon transport in planetary physics.