Sapphire is a high-purity and high-density, single-crystalline form of aluminum oxide that may contain chromia, titania, yttria, or other dopants. Sapphire is usually transparent or translucent.

Scientists from the Institute of Science Tokyo suggest that a novel alloy with high heat tolerance could help solve a ...

Sodium aluminate forms through the chemical reaction of aluminum oxide with sodium hydroxide and water, as follows: The residues sink gradually to the bottom of the tank and are later removed. In the ...

McDowell confirmed on X that it was a satellite operated by Beijing-based Space View. "The commercial imaging satellite ...

Raw aluminium readily forms a tough oxide layer when exposed to air, which protects the metal from further corrosion or reactions with many chemicals. This oxide layer can form incredibly quickly ...

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‘SEALING’ of oxide coatings produced on aluminium and its alloys by anodic treatment in sulphuric acid solutions is the reaction between the amorphous alumina (containing about 15 per cent ...

is energy intensive - electricity is used in the extraction of aluminium from aluminium oxide, which itself comes from the aluminium ore, or bauxite, mined out of the ground. It is difficult to ...