Electrofused aluminum oxides are synthetic hard minerals based on α - aluminum oxide.

They are produced in electric arc furnaces by electrothermal fusion at temperatures around 2000°C.

Electrofused aluminum oxides show a value of 9 on the Mohs scale of hardness, placing them virtually in the same category as - and close to - diamond , the hardest known substance.

Based on the very high hardness, the excellent thermal and chemical stability and a high degree of thermal shock resistance, fused aluminum oxide grits are mainly used as abrasive particles in grinding, machining, blasting, cutting operations and for the production of shaped or unshaped refractory materials.

Accordingly fused aluminum oxides show a high degree of resistance and an excellent durability against all kind of mechanical and/or thermal wear and tear.

The special properties of electrofused aluminum oxides -resistance against thermal and mechanical wear- can be used by applying protective coatings either with pure fused aluminum oxide or by incorporation of fused aluminum oxide particles in different matrix systems (matrix composite materials).

Examples of applications:

Plastic - Matrix - Composites:
laminate, wood-floorings, furniture, general protective coatings

Ceramic - Matrix - Composites:
glaze for tiles, enamels, several ceramic parts

Metal - Matrix - Composites:
aluminium alloys, different steel types or cast metals

Concrete - and Synthetic Resin - Matrix - Composites:
floorings in factories, airports, ships, parking garages, loading ramps