Multi-layer ceramic fiber insulation tile
AssigneeThe Boeing Company
InventorsRobert A. DiChiara, Jr., Franklin K. Myers
Life of this patent
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Abstract
A multi-layer tile material produced from layers of alumina enhanced thermal barrier material having different densities. The insulation layers are bound together by a high strength, high temperature alumina or silica binder having a coefficient of thermal expansion similar to that of the insulation layers. Use of the multi-layered tile allows the problems of tile slumping and of insufficient heat management associated with low density alumina enhanced thermal barrier tile to be overcome.
Claims19
A multi-layer alumina enhanced thermal barrier tile comprising:
- an inner insulation layer having a first average density and composed of a combination of silica fibers, alumina fibers, and borosilicate fibers,
- a outer insulation layer having a second average density greater than said first average density and composed of a combination of silica fibers, alumina fibers, and borosilicate fibers, and
- a bonding layer disposed between and joining said inner and outer insulation layers.
A multi-layer silica fiber insulation tile comprising:
- an inner alumina enhanced thermal barrier layer having a first average density
- an outer alumina enhanced thermal barrier layer having a second average density greater than said first average density, and
- a bonding layer disposed between and joining the inner layer and outer layer.
A multi-layer alumina enhanced thermal barrier tile comprising:
- an inner insulation layer having a first average density and composed of a combination of silica, alumina, and borosilicate fibers,
- a outer insulation layer having a second average density greater than said first average density and composed of a combination of silica, alumina, and borosilicate fibers, and
- a ceramic bonding layer joining said inner and outer insulation layers.
A multi-layer alumina enhanced thermal barrier tile comprising:
- an inner insulation layer having a first average density and composed of a combination of silica, alumina, and borosilicate fibers,
- an outer insulation layer having a second average density greater than said first average density and composed of a combination of silica, alumina, and borosilicate fibers,
- a bonding layer joining said inner and outer insulation layers, and
- a layer of reaction cured glass (RCG) upon said outer insulation layer opposite of said bonding layer.
Dependencies are inferred from the claim text.