Corning Incorporated

Chris Maxwell

Martin Joseph Murtagh

Bryan Ray Wheaton

David Jack Bronfenbrenner

A method of making ceramic articles includes compounding ceramic precursor batch components that include hydrous clay. The hydrous clay includes particle components having a platy geometry. The crystallite size of the platy hydrous clay particle components is greater than a predetermined amount. Controlling such crystallite size can result in reduced shrinkage of green ware during the clay dehydroxylation stage of firing.

Control of clay crystallite size for shrinkage management

The present disclosure relates to cordierite-forming batch materials and methods of using the same, and in particular batch materials for forming porous cordierite bodies suitable for treating engine emissions. The batch materials include sources of magnesium, alumina, silica, and high BET specific surface area raw kaolin clay. In some embodiments, the BET specific surface area of the raw kaolin clay is greater than 22 m/g. In other embodiments, the BET specific surface area of the raw kaolin clay is greater than 13 m/g, and the source of magnesium oxide and the source of non-kaolin clay source of silica both have relatively coarse particle size.

Growing community of inventors

Painted Post, NY, United States of America

Chris Maxwell