To optimize CaF2 content in highly basic CaO-18%Al2O3-SiO2-10%MgO-CaF2 (%CaO/%SiO2=6, denoted as C/S=6) refining slags used for the production of Al-killed duplex stainless steel with high cleanliness demand, effect on viscosity and ability were studied compared typical CaF2-free CaO-30%Al2O3-SiO2-10%MgO (C/S=6) slag. The addition decreasing slag becomes less obvious increasing temperature cont...

   The mixed metal nanocomposite MgO∙Al2O3∙ZnO has been prepared by coprecipitation method. The product was characterized by XRD. The average particle size was found to be 34.89 nm from XRD data. SEM and SEM-EDS were studied for evaluating surface morphology and elemental composition. The FTIR spectrum of prepared mixed metal nanocomposites MgO∙Al2O3</s...

We have found that crystalline Josephson junctions have problems with control of critical current density that decrease circuit yield. We present a superconducting quantum bit circuit designed to accommodate a factor of five variation in critical current density from one fabrication run to the next. The new design enables the evaluation of advanced tunnel barrier materials for superconducting q...

The cement industry is carbon-intensive, and the valorisation of industrial side-streams/residuals for use as alternative raw materials can enable to reduce its carbon footprint well promote resource efficiency. Apart from key clinker ingredients such CaO, Al2O3, SiO2, residues also contain MgO, CaCl2, SO3. Therefore, this study investigates formation assemblages in system CaO-SiO2-Al2O3-SO3-Ca...

Dry reforming of methane was investigated by non-thermal plasma coupled with different metal oxides: BaO, La2O3, ZnO, CaO, α-Al2O3, MgO, γ-Al2O3, TiO2 and CeO2. The deposited power fixed at 8 W the total gas flow 40 mL.min−1 (75 % helium as diluent). Electrical characterization showed that CO2 CH4 conversions were enhanced (from 5.6 to 30.6 for from 1.9 16.1 CO2) when permittivity reduced 2903 ...

Nonmetallic inclusions are harmful to the quality of 42CrMo4 steel. Therefore, formation and removal mechanism in steel during steelmaking process is investigated by industrial trials. The characteristics specimens were analyzed scanning electron microscopy energy dispersive spectroscopy. main type molten early stage ladle furnace (LF) refining MgO-Al2O3 irregular shape. CaO begins appear middl...