

Ultrafine materials were produced under conditions of extreme energy effects on the mixture of graphite and Ni-Mn catalysts. For the purpose to obtain various forms of carbon, including diamond-like forms, experiments were performed on a MIG high-current generator with the current amplitude of 2-2.5 MA and current rise time of 100 ns. The composition of the explosion products was studied using x-ray diffraction and x-ray phase analyses, the impedance spectroscopy, optical and scanning electron microscopy, x-ray microanalysis and energy dispersive x-ray analysis and the laser confocal Raman microscopy. It was found that the carbon in the studied materials is in the graphite, diamond-like (the faceted particles or agglomerates of faceted particles in size about or less than 250 nm) and amorphous forms. © Published under licence by IOP Publishing Ltd.
| Engineering controlled terms: | Amorphous carbonAmorphous materialsCatalystsEnergy dispersive X ray analysisGraphiteManganeseMixturesScanning electron microscopyX ray analysisX ray diffraction |
|---|---|
| Engineering uncontrolled terms | Confocal Raman microscopyCurrent amplitudeExplosion productsFaceted particlesHigh-current generatorImpedance spectroscopyX-ray microanalysisX-ray phase analysis |
| Engineering main heading: | Equations of state |
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| Russian Foundation for Basic Research | 16-02-00857 | RFBR |
| Russian Academy of Sciences | RAS | |
| Council on grants of the President of the Russian Federation |
Instrumentation of the Ural Center for Shared Use Modern Nanotechnology of the Ural Federal University was used. The work was supported by grants of the Russian Foundation for Basic Research (No. 16-02-00857) and the President of the Russian Federation (No.NSh-10174.2016.2), as well as program of the Presidium RAS (No. I.11P Thermophysics of high energy densities).
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