Aluminum titanate-based ceramic article

US7001861B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• George Halsey Beall · Big Flats, US
• Isabelle Marie Melscoet-Chauvel · Corning, US
• Steven Bolaji Ogunwumi · Corning, US
• Dell J. St. Julien · Watkins Glen, US
• Patrick David Tepesch · Corning, US
• Christopher John Warren · Waverly, US

Key dates

• Filing date: Jul 24, 2003
• Grant date: Feb 21, 2006
• Expiry date: Nov 16, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/9607
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An aluminum titanate-based ceramic article having a composition comprising u (Al2O3—TiO2)+v (R)+w (3Al2O3—2SiO2)+x (Al2O3)+y (SiO2)+z (1.1SrO-1.5Al2O3-13.6SiO2—TiO2)+a (Fe2O3—TiO2)+b (MgO-2TiO2), where, R is SrO—Al2O3-2SiO2 or 11.2SrO-10.9Al2O3-24.1SiO2—TiO2, where u, v, w, x, y, z, a and b are weight fractions of each component such that (u+v+w+x+y+z+a+b=1), and 0.5<u≦0.95, 0.01<v≦0.5, 0.01<w≦0.5, 0≦x≦0.5, 0≦y≦0.1, 0≦z≦0.5, 0<a≦0.3, and 0≦b≦0.3. A method of forming the ceramic article is provided. The ceramic article is useful in automotive emissions control systems, such as diesel exhaust filtration.