Effect of slurry rheological properties on the coating of ceramic honeycombs with yttria-stabilized-zirconia washcoats

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Title

Effect of slurry rheological properties on the coating of ceramic honeycombs with yttria-stabilized-zirconia washcoats (EN)

Creator

Agrafiotis, C (EN)

Tsetsekou, A (EN)

Leon, I (EN)

Type

journalArticle (EN)

Partial document
Publication in journal (EN)

Article
Scientific article (EN)

Issued

2014-03-01T01:49:52Z

2000 (EN)

Year

2000 (EN)

Description

Recently, a novel automotive catalyst design, based on the use of palladium supported on yttria-stabilized zirconia (YSZ), was proposed. In the present work, the coating of cordierite honeycomb samples with YSZ slurries for the preparation of such washcoats was investigated. The loading percentage, homogeneity, and reproducibility were found to depend strongly on the slurry viscosity. Parameters such as the slurry-solids content, pH, type of powder used, and use and quantity of the dispersants were optimized for the preparation of stable, low-viscosity YSZ slurries, adjustments that could lead to an efficient coating process for honeycomb structures. (EN)

Scientific field

Materials Science, Ceramics (EN)

Engineering and Technology ▶ Materials Engineering
Ceramics and Composites (EN)

Subject

SUPPORT (EN)

TEXTURE (EN)

SUSPENSIONS (EN)

CATALYSTS (EN)

ALUMINA (EN)

Journal

JOURNAL OF THE AMERICAN CERAMIC SOCIETY (EN)

Language