Cold sintering ceramics and composites
AssigneeThe Penn State Research Foundation
InventorsClive A. Randall, Jing Guo, Amanda Baker, Michael Lanagan, Hanzheng Guo
Life of this patent
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Abstract
Cold sintering of materials includes using a process of combining at least one inorganic compound, e.g., ceramic, in particle form with a solvent that can partially solubilize the inorganic compound to form a mixture; and applying pressure and a low temperature to the mixture to evaporate the solvent and densify the at least one inorganic compound to form sintered materials.
Claims20
1-20. (canceled)
A material, comprising:
- at least one inorganic compound;
- the material being a sintered material formed via a sintering process comprising:
- combining the at least one inorganic compound with a solvent to form a mixture;
- and
- applying pressure and heat to the mixture to evaporate the solvent and densify the at least one inorganic compound to form the material, wherein the applied heat is at a temperature of no more than 200° C. above the boiling point of the solvent, and wherein the material is densified to a relative density of greater than 80%.
The material of claim 1, wherein the combining of the at least one inorganic compound with the solvent to form the mixture includes combining the at least one inorganic compound with at least one other substance with the solvent to form the mixture.
A material, comprising:
- a ceramic deposited on a substrate, the ceramic deposited on the substrate via a sintering process comprising:
- depositing the ceramic on the substrate;
- exposing the ceramic deposited on the substrate to a solvent to form a wetted deposited ceramic;
- and
- applying pressure and heat to the wetted deposited ceramic to evaporate the solvent and sinter the ceramic on the substrate, wherein the applied heat is no more than 200° C., the applied pressure is no more than 5,000 MPa and the ceramic is sintered to a relative density of no less than 85%.
A device comprising:
- a sintered material, the sintered material comprising one of:
- (a) at least one inorganic compound, the sintered material being formed via a sintering process comprising:
- combining the at least one inorganic compound with a solvent to form a mixture;
- and
- applying pressure and heat to the mixture to evaporate the solvent and densify the at least one inorganic compound to form the material, wherein the applied heat is at a temperature of no more than 200° C. above the boiling point of the solvent, and wherein the material is densified to a relative density of greater than 80%;
- and
- (b) a ceramic deposited on a substrate, the ceramic deposited on the substrate via a sintering process comprising:
- depositing the ceramic on the substrate;
- exposing the ceramic deposited on the substrate to a solvent to form a wetted deposited ceramic;
- and
- applying pressure and heat to the wetted deposited ceramic to evaporate the solvent and sinter the ceramic on the substrate, wherein the applied heat is no more than 200° C., the applied pressure is no more than 5,000 MPa and the ceramic is sintered to a relative density of no less than 85%.
Dependencies are inferred from the claim text.