In this research, graphitization transformation of a commercial hypereutectoid steel called CK100 was studied by the dilatometric experiments at the range of 600 – 700 °C from prior martensitic structure. Also the effect of quenching media on the initial graphitization time and completion of transformation has been discussed. Also, graphitization transition from the different prior microstructu...

High surface area electrode materials are of interest for a wide range of potential applications such as super-capacitors and electrochemical cells. This paper describes a fabrication method of three-dimensional (3D) graphene conformally coated on nanoporous insulating substrate with uniform nanopore size. 3D graphene films were formed by controlled graphitization of diamond-like amorphous carb...

Activated carbon was treated at 5 GPa up to 1600 C, and the structural evolution in the graphitization process was investigated. The graphitization temperature is equal to 1200 C at 5 GPa, reflected by X-ray diffraction (XRD) patterns. Honeycomb-like structures in micron scale come into being in the high-pressure sintering temperature range of 100

Graphitized nanodiamonds were conveniently prepared by the laser irradiation of colloidal solution using various solvents. The nanodiamonds were converted into a fully graphitized onion-like structure, which became a cage-like mesoporous structure by the degradation of graphitic layers. Alcohols, acetone, and acetonitrile are more efficient solvents for the graphitization compared to water and ...

• Experimental data and modeling for CO 2 , H O mixed gasification at high pressure. Beech wood chars produced in drop-tube reactor 1400 °C 1600 200 ms. Gasification single-particle with forced flow-through conditions. Interpretation of results based on graphitization, ash dispersion morphology. This paper presents experimental approaches to describe the influence partial pressure as well absol...

Catalytically graphitized electrospun carbon nanofibers adorned uniformly with fine nickel nanoparticles were successfully prepared. The procedure was based on the electrospinning technique and the use of nickel precursor to create both graphitized nanofibers and nickel nanoparticles under a relatively low-temperature heat treatment. The X-ray diffraction and Raman results clearly proved cataly...

Graphite can be artificially converted from anthracites under high temperatures; however, the exact mechanism through which inorganic minerals contribute to graphitization process is still unknown. In light of this, several selected in different amounts were added demineralized anthracite coal. The anthracite–mineral mixtures subjected artificial experiments temperatures ranging 1700 2900 °C la...

This paper presents thermal deactivation of beech wood chars during secondary pyrolysis in a drop-tube reactor. Pyrolysis temperature was varied between 1000 °C and 1600 at constant residence time 200 ms. The effect conditions on initial conversion rate R0 gasification, graphitization the carbon matrix ash morphology investigated. Gasification experiments for determination were conducted thermo...