Thermodynamic properties of chromium oxide in molten slags are essential to optimizing stainless steel refining processes and reduction ores. The present study conducts chemical equilibrium experiments at 1823 K (1550°C) under different oxygen partial pressures order investigate activity coefficient CaO–CaF2–MgO–Al2O3–SiO2–MnO–CrOx with low content taking the effect MgO addition into considerat...

In this study, CaF2 was introduced into WC-Co to prepare bulk self-lubricating cemented carbides by sinter-HIP. The studied compositions were WC-12Co with no more than 20 vol% additions. effects of on the tribological behaviors and mechanical properties investigated. It found that prepared nearly fully dense would refine WC grains. Although could not obviously enhance carbides, it improved thei...

The objective of this study is to examine the impact Li-doping on radiophotoluminescent (RPL) properties CaF2. Before ionizing irradiation, Li-doped CaF2 exhibited no photoluminescence (PL) under excitation in range 250–700 nm. After displayed PL at 800 nm when excited 390 and 610 decay time constant for luminescence was determined be 20 ns, which suggests that it attributed (F2+)A centers. All...

mold powders in continuous casting of steel contain fluorine through mainly caf2 and occasionally naf andna3alf6. fluorine develops dangerous gases such as sif4 and hf at high temperatures. in this study, caf2 is partly replaced by substances such as na2co3, zno and fe2o3.sulfur free portland cement clinker containing gypsum was used as a new product base. these additions developed comparable v...

Calcium fluoride solid electrolytes have been identified as a candidate for solid-state fluoride-ion batteries (FIBs). Here, we investigate the doping of CaF2 with samarium — Ca1−xSmxF2+x (0 ≤ x 0.15) obtained by synthesis via high-energy ball milling. Structural, morphological, and ionic conductivity studies as-prepared materials were examined. It reveals that fluorite-type structure is domina...

The aim of the present study was to prepare nano-sized calcium fluoride (CaF2). Calcium fluoride nanoparticles were synthesized by CaCl2.6H2O and ammonium fluoride. Nanoparticles were synthesized by co-precipitation method. The synthesized nanocrystals were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electro...