Patent Number: 6,251,504

Title: Ceramic heat barrier coating having low thermal conductivity, and process for the deposition of said coating

Abstract: A ceramic heat barrier coating is deposited on a substrate so that the coating has a columnar growth pattern which is interrupted and repeated a number of times throughout its thickness by successive regermination of the ceramic deposit. The regermination is obtained by a vapour phase deposition process wherein a polluting gas is introduced intermittently during the deposition of the ceramic. The resulting ceramic coating has a lower thermal conductivity than conventional columnar ceramic coatings.

Inventors: Jaslier; Yann Philippe (Melun, FR), Malie; Andre Hubert Louis (Targe, FR), Huchin; Jean-Pierre Julien Charles (Chatellerault, FR), Alperine; Serge Alexandre (Paris, FR), Portal; Romain (Evry, FR)

Assignee: Societe Nationale d'Etude et de Construction de Monteurs d'Aviation S.N.E.C.M.A. and Snecma Services

International Classification: B32B 18/00 (20060101); C23C 14/00 (20060101); C23C 14/08 (20060101); C23C 4/10 (20060101); C23C 28/04 (20060101); F02C 7/00 (20060101); F01D 5/28 (20060101); F01D 9/02 (20060101); B32B 018/00 ()

Expiration Date: 06/26/2018