Abstract We have systematically explored the crystal structures of alkaline-earth metal sulfides under pressure by using a swarm-intelligence structural prediction method. At low pressures we successfully reproduced their known and phase transition sequences. Under high pressure, MgS is predicted to transform from B28 β -NbP-type structure at 262 GPa. CaS SrS present same sequence, B2 structure...

Rare earth ceramic oxides are used in several applications including, phosphors, gas sensors, fuel cells, catalytic converters, and corrosion protection. These materials exhibit attractive properties such as fracture toughness, stiffness, and high strengthto-weight ratios. Synthesis of rare earth oxides includes a long list of techniques, but electrodeposition is one that has not been used as e...

Carbonate and bicarbonate are the common anions found in significant concentrations in many natural waters, and are exceptionally strong complexation agents for actinide ions. Seepage, flooding and mining waters from the uranium mining area in the south-east of Germany (Saxony and Thuringia) contain relatively high amounts of magnesium, calcium, carbonate and sulphate ions. In these waters the ...

Mold powders are used as raw materials in continuous casting of steel industry; Also they are mostly composed of aluminum, calcium, silica oxides, alkaline and earth-alkaline oxides along with carbon and fluor. Two of the most important duties of mold powders are the lubrication of the space between mold walls and steel shell, and heat transfer control between steel shell and the copper mold. F...