Seam protected encapsulated array
Seam protected encapsulated arrays of solid ceramic elements are disclosed. Vulnerable seams between solid ceramic elements arranged adjacent to each other in encapsulated arrays of solid ceramic elements are protected by a seam protector arranged in-line with the vulnerable seams and fixed to the encapsulated array. A stiffener may be arranged in-line with the vulnerable seams and fixed to the encapsulated array opposite to the seam protector. The solid ceramic elements may be encapsulated in a barrier material to prevent the base metal from reacting with the ceramic material units during casting, and/or provide crush/compression protection during cooling.
1. A method comprising:
casting a metal around an array of solid ceramic tiles, the metal around the array of solid ceramic tiles defining an encapsulated array, the encapsulated array comprising:
a first surface opposite a second surface; and
at least one seam defined by an interface between a solid ceramic tile arranged adjacent to another solid ceramic tile in the encapsulated array, the metal arranged in the at least one seam; and
fixing a seam protector to the first surface of the encapsulated array, wherein the seam protector is aligned with the at least one seam to protect the at least one seam.
2. The method of claim 1 , wherein fixing the seam protector to the first surface of the encapsulated array comprises casting the at least one seam protector onto the first surface of the encapsulated array.
3. The method of claim 2 , wherein the at least one seam protector is cast from a metal alloy harder than the metal around the array.
4. The method of claim 2 , wherein at least a portion of the seam protector is retained by the metal cast around the array of sold ceramic tiles.
5. The method of claim 1 , wherein fixing the seam protector to the first surface of the encapsulated array comprises fastening the at least one seam protector onto the first surface of the encapsulated array via a mechanical fastener.
6. The method of claim 5 , wherein the seam protector is pre-cast from a metal alloy that is harder than the metal around the array.
7. The method of claim 5 , wherein the seam protector is pre-machined from a metal alloy that is harder than the metal around the array.
8. The method of claim 5 , wherein the seam protector is pre-fabricated of a ceramic.
9. The method of claim 1 , further comprising fixing a stiffener to the second surface of the encapsulated array to stiffen the encapsulated array, wherein the stiffener is aligned with the at least one seam protector.
10. The method of claim 9 , wherein fixing the stiffener to the second surface of the encapsulated array comprises casting the stiffener onto the second surface of the encapsulated array.
11. The method of claim 10 , wherein the at least one stiffener is cast from a same metal as the metal cast around the array.
12. The method of claim 9 , wherein fixing the stiffener to the second surface of the encapsulated array comprises fastening the stiffener onto the second surface of the encapsulated array via a mechanical fastener.
13. The method of claim 12 , wherein the stiffener is pre-cast from a same metal as the metal cast around the array.
14. The method of claim 12 , wherein the stiffener is pre-machined from a same metal as the metal cast around the array.
15. The method of claim 1 , wherein the metal is a steel alloy and the ceramic tiles in the array of solid ceramic tiles comprise silicon carbide tiles, and wherein
each of the silicon carbide tiles is encapsulated with a barrier material, which prevents the steel alloy from reacting with the silicon carbide tiles during the casting of the steel alloy around the array of silicon carbide tiles, and the barrier material providing a compressible layer between the steel alloy and each of the silicon carbide tiles during a cooling of the composite array.
16. The method of claim 1 , wherein the metal includes an additive comprising a ceramic grit.
17. A method comprising:
casting a metal around an array of solid ceramic tiles, the casting, including the metal and the array of solid ceramic tiles, defining a composite array, the composite array comprising:
a barrier material encapsulating each solid ceramic tile in the array of solid ceramic tiles to prevent the metal from reacting with the solid ceramic tiles during the casting of the metal around the array of solid ceramic tiles;
a solid ceramic tile arranged adjacent to another solid ceramic tile in the array of solid ceramic tiles;
a seam defined by an interface between the solid ceramic tile and the other solid ceramic tile, wherein the metal is arranged in the seam; and
a seam protector fixed to a surface of the composite array aligned with the seam to protect the seam.
18. The method of claim 17 , wherein the barrier material comprises an alumina, a silica, a spinel, or a molybdenum spinel.
19. The method of claim 17 , wherein the barrier material comprises a fiber wrapped around each solid ceramic tile, the fiber to prevent the metal from reacting with each solid ceramic tile during the casting of the metal around the array of solid ceramic tiles, and to provide a compressible layer between the metal and each solid ceramic tile during a cooling of the composite array.
20. The method of claim 19 , wherein the fiber comprises an alumina fiber.
21. The method of claim 17 , wherein the barrier material comprises a powder deposited around each solid ceramic tile, the powder to prevent the metal from reacting with each solid ceramic tile during the casting of the metal around the array of solid ceramic tiles, and to provide a compressible layer between the metal and each solid ceramic tile during a cooling of the composite array.
22. The method of claim 21 , wherein the powder comprises a nickel powder or a copper powder.
23. The method of claim 17 , wherein the barrier material comprises a thickness of at least about 0.04 inches (0.1 centimeters) to at most about 0.08 inches (0.2 centimeters).
24. The method of claim 17 , further comprising casting the seam protector to the surface of the composite array.
25. The method of claim 24 , wherein the seam protector comprises a white iron.
26. The method of claim 17 , further comprising casting at least a portion of the metal around at least a portion of the seam protector.
27. The method of claim 26 , wherein the seam protector comprises a ceramic.
28. The method of claim 17 , wherein the metal includes an additive comprising a ceramic grit.
29. A method comprising:
casting a metal around an array of solid ceramic elements, the metal around the array of solid ceramic elements defining an encapsulated array, the encapsulated array comprising:
a first surface opposite a second surface; and
at least one seam defined by an interface between a solid ceramic element arranged adjacent to another solid ceramic element in the encapsulated array, the metal arranged in the at least one seam; and
fixing a seam protector to the first surface of the encapsulated array, wherein the fixing comprises fastening the at least one seam protector onto the first surface of the encapsulated array via a mechanical fastener and the seam protector is aligned with the at least one seam to protect the at least one seam.
30. A method comprising:
casting a metal around an array of solid ceramic elements, the metal around the array of solid ceramic elements defining an encapsulated array, the encapsulated array comprising:
a first surface opposite a second surface; and
at least one seam defined by an interface between a solid ceramic element arranged adjacent to another solid ceramic element in the encapsulated array, the metal arranged in the at least one seam;
fixing a seam protector to the first surface of the encapsulated array, wherein the seam protector is aligned with the at least one seam to protect the at least one seam; and
casting a stiffener, from a same metal as the metal cast around the array, onto the second surface of the encapsulated array to stiffen the encapsulated array, wherein the stiffener is aligned with the at least one seam protector.