ATZ fused grains

US9056796B2 · kind B2 · utility

Assignee

• SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN · FR

Inventor

• Stephane Raffy · Briançon, FR

Key dates

• Filing date: Mar 27, 2012
• Grant date: Jun 16, 2015
• Expiry date: Apr 15, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/9607
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Fused grain having the following chemical composition: more than 10% and less than 50% of alumina Al2O3; more than 10% and less than 50% of titanium oxide TiO2; more than 21% and less than 50% of zirconia; more than 1% and less than 10% of a compound chosen from the group constituted by MgO, CaO, Fe2O3, Cr2O3, MnO2, La2O3, Y2O3, Ga2O3 and mixtures thereof; less than 20% of silica SiO2; less than 10% of a compound chosen from the group constituted by alkali metal oxides, alkaline-earth metal oxides and mixtures thereof; less than 2% of other oxide species; the percentages being percentages by weight on the basis of the oxides. Application in the melting of metals.