Saint-Gobain Ceramics & Plastics, Inc.

Saint-Gobain Centre De Recherches Et D'etudes Europeen

David Woolley

Vimal K Pujari

William T Collins

Charles Bateman

Ara Vartabedian

Francisco Jose Carranza

Andrew K Leighton

The present invention relates generally to a multi-layered article suitable for service in severe environments. The article may be formed of a substrate, such as silicon carbide and/or silicon nitride. The substrate may have a first layer of a mixture of a rare earth silicate and Cordierite. The substrate may also have a second layer of a rare earth silicate or a mixture of a rare earth silicate and cordierite.

Environmental barrier coating

The invention relates to a honeycomb monolithic element for the filtration of particles, characterized in that the peripheral channels forming part of the outer wall of said element are configured to help in the formation of an outer wall whose inner face is substantially flat over the whole length of the element and in that said flat wall also has an increased thickness at the corners, so that, on a cross section, the ratio R of the thickness Eof the wall, measured along the bisecting line of the angle at a corner of the element, over the minimal thickness Eof said wall is greater than 1.5.

Monolithic element with reinforced corners for the filtration of particles

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Ayer, MA, United States of America

David Woolley