The evolution of inclusions in low carbon Al killed steel during ladle refining was studied based on industrial experiments, which high basicity slag used. results showed that experienced the changes from Al2O3 → MgO-Al2O3 CaO-MgO-Al2O3 CaO-Al2O3. Without calcium treatment, inclusion were largely transformed into or With aim to decrease and clarify effects refractory materials inclusions, labor...

With the raw materials for ironmaking becoming increasingly complex, more accurate phase equilibrium information on slag is needed to refine blast furnace operation reduce energy cost and CO2 emissions. CaO-SiO2-Al2O3-MgO a basic system of in which CaO MgO mainly come from flux, SiO2 Al2O3 are materials. The effect flux additions can be described by pseudo-ternary CaO-MgO-(Al2O3+SiO2) at fixed ...

Low frequency noise has been measured in magnetic tunnel junctions with MgO barriers and magnetoresistance values up to 235%. The authors investigated the noise for different degrees of crystallization and CoFeB/MgO interface quality depending on the annealing temperature. The authors report an extremely low 1/ f noise, compared to magnetic junctions with Al2O3 barriers. The origin of the low f...

An egg-shell Pd/Al2O3 catalyst showed higher activity than a regular Pd/Al2O3 catalyst in the partial oxidation of methane to syngas, but a common problem of this reaction is the catalyst deactivation on stream. We attempted to modify the egg-shell catalyst via impregnation with some metal oxide additives. Although the addition of MgO did not show any beneficial effect, the addition of CaO and/...

Chromium nitride CrN films were epitaxially grown on -Al2O3 0001 and MgO 001 substrates by pulsed laser deposition at 973 K under nitrogen radical irradiation, and the structural change of the films was investigated at around the Néel temperature of CrN 270 K by temperature-controlled x-ray diffraction experiments. Bulk cubic CrN is known to show monoclinic distortion below the Néel temperature...

The growth of Cobalt oxides by reactive thermal evaporation of metallic Cobalt in an oxygen atmosphere on a series of oxide substrates, namely SiO2, Al2O3 and MgO, has been chemically and morphologically studied by means of XPS and atomic force microscopy (AFM). The XPS results reveal that cobalt oxide grows as CoO (Co) for coverages up to some tens of equivalent monolayers on all substrates. F...

The first meteorite to be found 1 that was eventually (1984) recognized to have originated from the Moon is Yamato 791197 [1]. The find date, November 20, 1979, was four days after the end of the first Conference on the Lunar Highland Crust [2]. Since then, >75 other lunar meteorites have been found, and these meteorites provide information about the lunar highlands that was not known from stud...

Alumina-rich iron ore is a widely existed polymetallic deposit in the nature, and it has a high comprehensive utilization value. Because the alumina and iron contents of alumina-rich iron ore vary from each other, there are many different measures and processes to recover iron and alumina from the various kinds of alumina-rich iron ore. In the blast furnace (BF) ironmaking process, the alumina ...

Plain strain deformation trials were carried out on samples of pipeline steels at 1473 K, 1673 K and 1723 respectively. The inclusions in the solid steel different temperatures semi-solid was studied. composition changed from 60.62%Al2O3–16.10%CaO–10.27%MgO–13.01%CaS before to 60.59%Al2O3–13.03%CaO–12.74%MgO–13.63%CaS, 59.69%Al2O3–7.04%CaO–11.51%MgO–21.76%CaS, 68.26%Al2O3–22.56%CaO–6.68%MgO–2.5...