Chromium oxide refractory material

US9061930B2 · kind B2 · utility

Assignee

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

Inventors

• Cyril Linnot · Val-de-Reuil, FR
• Lionel Moitrier · Mallemort, FR
• Yves Roux · Rouillac, FR
• Olivier Citti · Wellesley, US
• Richard Avedikian · Robion, FR

Key dates

• Filing date: Jul 22, 2011
• Grant date: Jun 23, 2015
• Expiry date: Mar 21, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A device selected from among a glass furnace and a channel for dispensing the glass comprising a block and/or a coating made of a sintered material obtained by sintering a particular mixture comprising a chromium oxide content, indicated as “CrT”, of between 10% and 82%. The die fraction is such that 0.39·(CrT)+24<CrM<0.39·(CrT)+52, CrM denoting the chromium oxide content by weight of the die fraction in wt % on the basis of the oxides of the die, and the aggregate is such that xII≧97%, xIII≧70%, and xIV≦xIII−70%, CrG denoting the chromium oxide content by weight of one grain in wt % on the basis of the oxides of said grain.