Lonza Inc.

Reiner Kunz

Konrad Kampfer

Rainer Dietrich

Albert Babl

Ales Zahradnicek

Rudolf Strittmatter

By adding very-finely-divided or highly-dispersed titanium dioxide or aluminum titanate, optionally in a mixture with aluminum oxide, sintered products of great hardness, whose fracture toughness can be adjusted over a wide range, are obtained from aluminum hydroxide according to a sol-gel process depending on the selection of the sintering conditions. The materials are especially suitable as abrasives or for the production of ceramic powder or components.

Sintered material based on aluminum oxide

Process for producing sintered material based on aluminum oxide and

The strength and water resistance of the binding of abrasive grain on the basis of corundum or silicon carbide into synthetic resin bonded abrasive agents is improved by a surface treatment with microdispersed hydrophobic silicon dioxide.

Hydrophobically coated abrasive grain

An abrasive grain with an aluminum oxide base which is distinguished by good throwing power and by a good capability of being integrated in flexible abrasives or in grinding wheels with artificial resin bonding.

Abrasives

An abrasive grain on the basis of silicon carbide with a binder-free coating of highly dispersed silicon, aluminum or titanium oxide for preferred use in resin-bonded or ceramic-bonded abrasive wheels.

Growing community of inventors

Waldshut-Tiengen, Germany

Reiner Kunz