aluminium oxide

British  

noun

1. Also called: alumina.  a white or colourless insoluble powder occurring naturally as corundum and used in the production of aluminium and its compounds, abrasives, glass, and ceramics. Formula: Al 2 O 3 See also activated alumina

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Example Sentences

After 3 hours, the aluminium had reacted with the cathode material and produced a mixture of insoluble aluminium oxides, as well as metallic cobalt and water-soluble lithium oxides.

From Scientific American

The electrolysis process, 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.

From BBC

The key advance is the hemispherical retina: a dense array of light-sensitive nanowires held in the pores of an aluminium oxide membrane.

From Nature

Conventionally, it was difficult to produce anything more than 50% using FT synthesis, in a process usually based on iron or cobalt catalysts supported on silica or aluminium oxide.

From Nature

It’s a two-step process: refine aluminium oxide powder from bauxite ore and then convert it to aluminium in smelters.

From Nature