Study of the Carbonization and Graphitization of Coal Tar Pitch Modified with SiC Nanoparticles

Abstract

Silicon carbide nanoparticles (nSiC) have been used to modify coal tar pitch (CTP) as a carbon binder. The influence of ceramic nanoparticles on the structure and microstructure was studied. The structure of CTP-based carbon residue with various nSiC contents was analyzed by using SEM with EDAX, Raman spectroscopy, and X-ray diffraction. The effect of ceramic nanofiller on the crystallite sizes (Lc, La) and the c-axis spacing (d002) in carbonized samples after heating from 1000 to 2800°C was analyzed. Ceramic nanofillers inhibit structural changes in carbonized samples heated to 1000°C. After heating CTP with nSiC above 2000°C, the carbon samples contained two carbon components differing in structural ordering. Ceramic nanoparticles increase carbon crystallite growth, while their impact on the c-axis spacing is low.

Investigation of Changes in the Fine Structure of Graphitizing Carbon Materials during Heat Treatment by X-Ray Diffraction Analysis

“…The operational properties of these materials are largely determined by the crystal structure formed in the production process [1]- [7]. To diagnose changes in the structure of carbon materials at different stages of production, to study the effect of special additives, X-ray diffraction analysis methods are widely used to determine the degree of graphitization, dispersed and phase composition, and texture parameters [3] [4] How to cite this paper: Tyumentsev, V.A. and Fazlitdinova, A.G. (2020) Investigation of Changes in the Fine Structure of Graphitizing Carbon Materials during Heat Treatment by X-Ray Diffraction Analysis.…”