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

"Our largest concern is aluminium and aluminium oxides interacting with the ozone layer," Wing says.

From BBC

This prevented the formation of insoluble lithium aluminium oxides, which lock up the lithium.

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