High temperature refractory coatings for ceramic substrates

Inventors: Wayde R. Schmidt (Pomfret Center, CT); Tania Bhatia Kashyap (Middletown, CT); Xia Tang (West Hartford, CT); David C. Jarmon (Kensington, CT); Owen B. Donahue, Jr. (Mystic, CT)

Assignee: United Technologies Corporation

C09D5/00 C04B24/00 C04B35/56 C04B35/571 C04B37/005 C04B38/0022 C04B41/5053 C04B41/52 C04B41/87 C04B41/89 C04B2111/00551 C04B2111/00982 C04B2235/3804 C04B2235/3817 C04B2235/3891 C04B2235/404 C04B2235/421 C04B2235/428 C04B2235/483 C04B2235/486 C04B2237/10 C04B2237/365 Y10T428/30

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Quick Facts

Patent No.: US 9,315,674
App. No.: 13/662,647
Granted: Apr 19, 2016
Kind: B2

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Abstract

A composition for manufacturing a composite of a non-oxide ceramic matrix and a refractory phase within the non-oxide ceramic matrix includes a preceramic polymer for forming a non-oxide ceramic matrix and a refractory material dispersed within the preceramic polymer.

Claims (24)

1. A composition for manufacturing a composite of a non-oxide ceramic matrix and a refractory phase within the non-oxide ceramic matrix, comprising:

a preceramic polymer for forming a non-oxide ceramic matrix, the preceramic polymer including at least one of polysilane, polysilazane, polycarbosilane, or polyborosilazane; and

a refractory material dispersed within the preceramic polymer, and the refractory material is a silicide of hafnium.

2. The composition as recited in claim 1 , comprising about 5-95 wt % of the preceramic polymer and about 5-95 wt % of the refractory material, totaling 100 wt %.

3. The composition as recited in claim 2 , comprising about 50-95 wt % of the preceramic polymer and about 5-50 wt % of the refractory material, totaling 100%.

4. The composition as recited in claim 1 , wherein the preceramic polymer is a non-stoichiometric composition such that upon pyrolysis the preceramic polymer forms the non-oxide ceramic matrix and a reactive byproduct.

5. The composition as recited in claim 4 , wherein the reactive byproduct is carbon.

6. The composition as recited in claim 1 , where the refractory material includes an additional material selected from the group consisting of elemental forms of molybdenum, niobium, and combinations thereof.

7. The composition as recited in claim 1 , wherein the refractory material additionally includes an elemental form of molybdenum.

8. The composition as recited in claim 1 , wherein the refractory material includes an additional material selected from the group consisting of silicides of titanium, molybdenum, zirconium, niobium, tantalum, tungsten, and combinations thereof.

9. The composition as recited in claim 1 , wherein the refractory material additionally includes a silicide of molybdenum.

10. The composition as recited in claim 1 , wherein the refractory material includes an additional material selected from the group consisting of oxides of molybdenum, niobium, tantalum, tungsten, and combinations thereof.

11. A composition for manufacturing a composite of a non-oxide ceramic matrix and a refractory phase within the non-oxide ceramic matrix, comprising:

a preceramic polymer for forming a non-oxide ceramic matrix, the preceramic polymer including at least one of polysilane, polysilazane, polycarbosilane, or polyborosilazane; and

a refractory material dispersed within the preceramic polymer, and the refractory material is hafnium-containing borosilicate.

12. The composition as recited in claim 11 , comprising about 5-95 wt % of the preceramic polymer and about 5-95 wt % of the refractory material, totaling 100 wt %.

13. The composition as recited in claim 11 , comprising about 50-95 wt % of the preceramic polymer and about 5-50 wt % of the refractory material, totaling 100%.

14. The composition as recited in claim 11 , wherein the preceramic polymer is a non-stoichiometric composition such that upon pyrolysis the preceramic polymer forms the non-oxide ceramic matrix and a reactive byproduct.

15. The composition as recited in claim 14 , wherein the reactive byproduct is carbon.

16. The composition as recited in claim 11 , wherein the refractory material includes an additional material selected from the group consisting of elemental forms of molybdenum, niobium, and combinations thereof.

17. The composition as recited in claim 11 , wherein the refractory material additionally includes an elemental form of molybdenum.

18. The composition as recited in claim 11 , wherein the refractory material includes an additional material selected from the group consisting of silicides of titanium, molybdenum, zirconium, niobium, tantalum, tungsten, and combinations thereof.

19. The composition as recited in claim 11 , wherein the refractory material additionally includes a silicide of molybdenum.

20. The composition as recited in claim 11 , wherein the refractory material includes an additional material selected from the group consisting of oxides of molybdenum, niobium, tantalum, tungsten, and combinations thereof.

Continuity (2)

Division 11778692 · Jul 17, 2007

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