Patent
Wavy CMC Wall Hybrid Ceramic Apparatus
TLDR
In this paper, a wavy ceramic matrix composite (CMC) wall (214, 532, 603, 609) with a ceramic insulating layer (230, 538, 604, 610) having a distal surface (242) that may define a hot gas passage is described.Abstract:
A ceramic hybrid structure (207, 502, 602, 608) that includes a wavy ceramic matrix composite (CMC) wall (214, 532, 603, 609) bonded with a ceramic insulating layer (230, 538, 604, 610) having a distal surface (242) that may define a hot gas passage (250, 550, 650) or otherwise be in proximity to a source of elevated temperature. In various embodiments, the waves (216, 537, 637) of the CMC wall (214, 532, 603, 609) may conform to the following parameters: a thickness (222) between 1 and 10 millimeters; an amplitude (224) between one and 2.5 times the thickness; and a period (226) between one and 20 times the amplitude. The uninsulated backside surface (218) of the CMC wall (214) provides a desired stiffness and strength and enhanced cooling surface area. In various embodiments the amplitude (224), excluding the thickness (222), may be at least 2 mm.read more
Citations
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References
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Patent
Hybrid ceramic material composed of insulating and structural ceramic layers
TL;DR: In this paper, a hybrid ceramic structure is proposed for high temperature environments such as in gas turbines, which is made from an insulating layer of porous ceramic that is thermally stable at temperatures up to 1700 C bonded to a high mechanical strength structural layer of denser ceramic, where optional high temperature resistant adhesive can bond the layers together.
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