The effects of microwave plasma induction and reduction on the promotion of the carbothermal reduction of iron oxides (α-Fe2O3, γ-Fe2O3, and Fe3O4) are investigated using in situ emission spectroscopy measurements during 2.45 GHz microwave processing, and the plasma discharge (such as CN and N2) is measured during microwave E-field irradiation. It is shown that CN gas or excited CN molecules co...

An alumina surface coating is demonstrated to improve electrochemical performance of MoO(3) nanoparticles as high capacity/high-volume expansion anodes for Li-ion batteries. Thin, conformal surface coatings were grown using atomic layer deposition (ALD) that relies on self-limiting surface reactions. ALD coatings were tested on both individual nanoparticles and prefabricated electrodes containi...

The present paper investigated the thermodynamics and kinetics of carbothermal reduction fayalite by non-isothermal method combining with thermogravimetric analyzer applying Flynn-Wall-Ozawa (FWO) M?lek models. According to thermodynamic analysis, starting temperature direct reaction was 806.79? in standard state. indirect could not take place While volume percentage CO higher than 86 vol.% non...

We prepared a new Mn activated ZnS phosphor co-doped with Ba that showed an interesting shift in the spectral emission from amber-yellow to red colour. We believe it to be an important result to understand the underlying Physics and for display devices. To realize this, attempts were made to fine tune the band gap of ZnS with various concentrations of Ba co-doping within the concentration range...

Sn02 nanowires with diameters of 30 — 200 nm have been synthesized by using carbothermalprocess via a thick film of tin dioxide and carbon powder precursor. The nanowires werecharacterized by X-ray power diffraction (XRD), scanning electron microscopy (SEM),transmission electron microscopy (TEM) and Selected Area Electron Diffraction (SAED).The gas sensing characteristic of nanowires toward eth...

Shrinkage, liquid formation and mass losses of WC-19 vol% FeNiCoCr alloys during sintering have been investigated in compositions either with coarse or submicron WC powders. Mass detected by thermogravimetry are compatible carbothermal reduction the different oxides present powder mixtures. Hardness fracture toughness materials based on powders within tolerances those reported for WC-Co similar...