Inventors:
Albert P. Sterman - Cincinnati OH
Charles H. Gay - Loveland OH
Frederick W. Tegarden - Cincinnati OH
Dean T. Lenahan - Cincinnati OH
Martin C. Hemsworth - Cincinnati OH
Assignee:
General Electric Company - Cincinnati OH
International Classification:
F01D 2524
B32B 300
Abstract:
A turbine shroud includes a ceramic sealing layer secured to a metal substrate. In one form, the metal substrate includes a plurality of pegs extending therefrom. Intermediate bonding layers are disposed on the peg-metal substrate structure. A ceramic sealing layer of zirconium oxide with about 20 weight percentage magnesium oxide is disposed, e. g. , plasma sprayed, on the intermediate bonding layers. The ceramic sealing layer includes an ordered pattern of very fine cracks therein which reduce the thermal stress in the ceramic sealing layer. A method of constructing a turbine shroud structure is also disclosed.