Ferroelastic ceramic compositions, applications thereof, and related methods

Patent metadata

Field	Value
Publication number	US-11027976-B2
Application number	US-201816206360-A
Country	US
Kind code	B2
Filing date	Nov 30, 2018
Priority date	Nov 30, 2017
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

An example ferroelastic ceramic composition includes at least one compound having a relative chemical formula of AXBYC(1-X-Y)D. Element A, element B, and element C are independently selected from different members of the group consisting of yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium. Element D is selected from the group consisting of phosphate, niobate, and tungstate. X and Y are each equal to or greater than zero and less than one. X and Y are collective less than one.

First claim

We claim:

1. A ferroelastic ceramic composition comprising:
at least one compound having a relative chemical formula of A (1-X-Y) B x C Y D wherein:
an element A, an element B, and an element C are independently selected from different members of the group consisting of yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium;
an element D is selected from the group consisting of a phosphate, a niobate, and a tungstate, wherein the phosphate is PO 4 , the niobate is NbO 3 , and the tungstate is WO 4 ;
X is equal to or greater than zero and less than one; and
Y is equal to or greater than zero and less than one;
wherein X and Y are collectively less than one;
wherein the ferroelastic ceramic composition is a single crystal.

2. The ferroelastic ceramic composition of claim 1 , wherein the element D is the phosphate.

3. The ferroelastic ceramic composition of claim 1 , wherein the element D is a niobate or a tungstate.

4. The ferroelastic ceramic composition of claim 1 , wherein X is zero.

5. The ferroelastic ceramic composition of claim 4 , wherein Y is zero.

6. The ferroelastic ceramic composition of claim 1 , wherein the ferroelastic ceramic composition exhibits a dissipated energy that is greater than about 50 MJ/m 3 .

7. The ferroelastic ceramic composition of claim 6 , wherein the ferroelastic ceramic composition is recoverable and repeatable over at least 5 cycles without losing more than 50% of the dissipated energy.

8. The ferroelastic ceramic composition of claim 1 , wherein the ferroelastic ceramic composition exhibits a maximum shear stress that is greater than about 4 GPa.

9. The ferroelastic ceramic composition of claim 1 , wherein the ferroelastic ceramic composition exhibiting a depth of recovery that is greater than about 0.85.

10. The ferroelastic ceramic composition of claim 1 , wherein the ferroelastic ceramic composition at least one of absorbs energy, releases energy, or exhibiting damping behavior upon the application and removal of a mechanical stress at a temperature that is greater than 200° C.

11. An engine comprising:
at least one component including at least one surface; and
at least one thermal barrier coating at least partially coating at least a portion of the at least one surface of the at least one component, the at least one thermal barrier coating including the ferroelectric ceramic composition of claim 1 .

12. The engine of claim 11 , wherein the at least one component includes at least one of a piston crown, a valve, a cylinder cover, or a cylinder wall.

13. A turbine comprising:
at least one component including at least one surface; and
at least one thermal barrier coating at least partially coating at least one of the one or more surfaces of the one or more components, the at least one thermal barrier coating including the ferroelastic ceramic composition of claim 1 .

14. The turbine of claim 13 , wherein the at least one component include a turbine blade.

15. The ferroelastic ceramic composition of claim 1 , wherein X and Y are greater than zero and less than one.

16. A method of using a ferroelastic ceramic composition, the method comprising:
applying a load to at least a portion of the ferroelastic ceramic composition, the ferroelastic ceramic composition including at least one compound having a relative chemical formula of A (1-X-Y) B x C Y D, wherein:
an element A, an element B, and an element C are independently selected from different members of the group consisting of yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium;
an element D is selected from the group consisting of phosphate, niobate, or tungstate, wherein the phosphate is PO 4 , the niobate is NbO 3 , and the tungstate is WO 4 ;
X is a number that is equal to or greater than zero and less than one; and
Y is a number that is equal to or greater than zero and less than one;
wherein X and Y are collectively less than one;
wherein the ferroelastic ceramic composition is a single crystal; and

after applying a load to at least a portion of the ferroelastic ceramic composition, removing the load the at least a portion of the ferroelastic ceramic composition aterial.

17. The method of claim 16 , further comprising, before applying a load to at least a portion of a ferroelastic ceramic composition, heating the ferroelastic ceramic composition to a temperature greater than about 200° C.

18. The method of claim 17 , wherein heating the ferroelastic ceramic composition includes heating the ferroelastic ceramic composition to a temperature of about 300° C. to about 1200° C.

19. The method of claim 16 , further comprising, after removing the load from the at least a portion of the ferroelastic ceramic composition, repeating the acts of applying a load to at least a portion of the ferroelastic ceramic composition and removing the load from the at least a portion of the ferroelastic ceramic composition.

Assignees

• Colorado School Of Mines

Inventors

• Wilkinson Taylor M
• Musselman Matt
• Packard Corinne E

Classifications

• F05D2300/22

  Non-oxide ceramics · CPC title

• F01D5/286

  Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion (F01D5/288 takes precedence) · CPC title

• C30B9/00

  Single-crystal growth from melt solutions using molten solvents (by normal or gradient freezing C30B11/00; by zone-melting C30B13/00; by crystal pulling C30B15/00; on immersed seed crystal C30B17/00; by liquid phase epitaxial growth C30B19/00; under a protective fluid C30B27/00) · CPC title

• C01B25/37 Primary

  Phosphates of heavy metals · CPC title

• C30B29/14

  Phosphates · CPC title