alumina
aluminum oxide
aluminium oxide

Of these materials, aluminum oxide is the most common.

She said in an offhand way, "Nice collection of aluminum oxide you got here."

And over time the aluminum oxide breaks down in the capacitor.

The addition of aluminum oxide also increases resistance to radiation damage.

As you run you choke on air full of aluminum oxide.

A thin layer of aluminum oxide was deposited on the facet.

It uses a continuously dressed aluminum oxide grinding wheel running at high speed.

"Have you produced any aluminum oxide at all?"

Aluminum oxide, silicon carbide and other abrasives are also used.

It evolves white smoke (aluminum oxides) when the vapor is released into the air.