Method for producing high-temperature-resistant coatings and structures
A method for forming a ceramic-based material comprises depositing a ceramic-precursor composition comprising nanoparticles having at least one dimension less than 100 nm and an aspect ratio of 1.5 or greater, and a carrier fluid on a surface of a substrate to form an as-deposited layer of the ceramic precursor composition; and sintering the as-deposited layer of the ceramic precursor composition at a sintering temperature to form a ceramic-based material.
1. A method for forming a ceramic-based material, the method comprising:
(a) depositing a composition comprising nanoparticles having at least one dimension less than 100 nm and an aspect ratio of 1.5 or greater, and a carrier fluid on a surface of a substrate to form an as-deposited layer of the composition, wherein the nanoparticles are selected from a group consisting of WO 3 , ceria, hafnia, titania, and combinations thereof, and further wherein the carrier fluid is an inorganic ionic liquid consisting of inorganic ions and having a melting point at or below room temperature; and
(b) sintering the as-deposited layer at a sintering temperature to form a ceramic-based material.
2. The method of claim 1 , wherein the inorganic ionic liquid is selected from metal halides, thiocyanate salts, and combinations thereof.
3. The method of claim 1 , wherein the deposition is carried out using layer-by-layer deposition to provide an as-deposited multilayer structure consisting of the composition.
4. The method of claim 1 , wherein the nanoparticles are monocrystalline.
5. The method of claim 1 , wherein the nanoparticles have at least one dimension in a range of from 1 nm to 100 nm.
6. The method of claim 1 , wherein the nanoparticles have each of their dimensions less than 100 nm.
7. The method of claim 1 , wherein the nanoparticles are nanoplatelets.
8. The method of claim 1 , wherein step (a) is carried out at a temperature of less than 100° C.
9. The method of claim 1 , wherein step (a) is carried out at room temperature or below.
10. The method of claim 1 , wherein the sintering temperature is 1000° C. or less.
11. The method of claim 1 , wherein the nanoparticles comprise WO 3 .
12. The method of claim 1 , wherein the nanoparticles comprise ceria.
13. The method of claim 1 , wherein the nanoparticles comprise hafnia.
14. The method of claim 1 , wherein the nanoparticles comprise titania.
15. A method for forming a ceramic-based material, the method comprising:
(a) depositing a composition comprising nanoparticles having at least one dimension less than 100 nm and an aspect ratio of 1.5 or greater, and a carrier fluid on a surface of a substrate to form an as-deposited layer of the composition, wherein the deposition is carried out using layer-by-layer deposition to provide an as-deposited multilayer structure consisting of the composition, wherein the nanoparticles are selected from a group consisting of WO 3 , ceria, hafnia, titania, and combinations thereof, wherein the carrier fluid is an inorganic ionic liquid consisting of inorganic ions and having a melting point at or below room temperature, and wherein the inorganic ionic liquid is selected from metal halides, thiocyanate salts, and combinations thereof; and
(b) sintering the as-deposited layer at a sintering temperature to form a ceramic-based material.
16. The method of claim 15 , wherein the nanoparticles are monocrystalline.
17. The method of claim 15 , wherein the nanoparticles have at least one dimension in a range of from 1 nm to 100 nm.
18. The method of claim 15 , wherein the nanoparticles have each of their dimensions less than 100 nm.
19. The method of claim 15 , wherein the nanoparticles are nanoplatelets.
20. The method of claim 15 , wherein step (a) is carried out at a temperature of less than 100° C.