Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics

Thomas Tsakalakos (Inventor), Enver Akdoğan (Inventor), Ilyas Savkliyildiz (Inventor), Hulya Bicer (Inventor), William Paxton (Inventor), Bart Visser (Inventor), Lawrence Kabacoff (Inventor)

Research output: Innovation

Abstract

Parallel plate capacitor configuration used to apply an electric field and to achieve low-temperature sintering of a non-oxide ceramic (B4C)


Invention Summary:

Bulk and composite structural ceramics can be fabricated by sintering, forming particulate matter into a desired shape and then subjecting the formed body to high temperatures (2/3 of the melting temperature) and high pressures (250 MPa). These fabrication conditions are costly and lead to decomposition of non-oxide ceramics.

Researchers at Rutgers have devised a method of sintering ultrahigh melting temperature covalent non-oxide ceramics at low temperatures. This sintering method exploits the conductivity of these ceramics by applying an electric field alongside heat. In addition to reducing costs by lowering the required temperature, this method can be accomplished at atmospheric pressure. The method can produce sub-100 nm grain size polycrystalline nonoxide ceramics with greater than 95% density. These ceramics are produced under better chemical and microstructural control, with high fracture strength, yet low overall fabrication cost. The new technology also has the potential of continuous manufacturing and is much faster even as a batch manufacturing system.



Market Application:

Ceramic Manufacturing Automotive Specialty Products Aerospace and Defense Products Gas Turbines Tooling and Die Manufacture Protective Coatings High Friction Applications Nuclear Waste Management


Advantages:

Avoid decomposition of non-oxide ceramics (B4C, ZrB2, TiB2, Si3N4, SiC, BN) Low temperature (2/9 melting, <1000 °C) Small grain size (<100 nm) High density (>95%) Rapid processing (<5 minutes) Atmospheric pressure Scalable with modest capital investment


Intellectual Property & Development Status:

Issued Patent. Available for licensing and/or research collaboration.

Original languageEnglish (US)
StatePublished - Jan 2019

Fingerprint

Melting point
Sintering
Atmospheric pressure
Temperature
Electric fields
Structural ceramics
Decomposition
Fabrication
Intellectual property
Protective coatings
Patents and inventions
Waste management
Radioactive wastes
Gas turbines
Costs
Fracture toughness
Melting
Capacitors
Friction
Composite materials

Keywords

  • Ceramics
  • Continuous Manufacturing
  • Low Temperature
  • Sintering

Cite this

Tsakalakos, T., Akdoğan, E., Savkliyildiz, I., Bicer, H., Paxton, W., Visser, B., & Kabacoff, L. (2019). Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics.
Tsakalakos, Thomas (Inventor) ; Akdoğan, Enver (Inventor) ; Savkliyildiz, Ilyas (Inventor) ; Bicer, Hulya (Inventor) ; Paxton, William (Inventor) ; Visser, Bart (Inventor) ; Kabacoff, Lawrence (Inventor). / Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics.
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title = "Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics",
abstract = "Parallel plate capacitor configuration used to apply an electric field and to achieve low-temperature sintering of a non-oxide ceramic (B4C) Invention Summary: Bulk and composite structural ceramics can be fabricated by sintering, forming particulate matter into a desired shape and then subjecting the formed body to high temperatures (2/3 of the melting temperature) and high pressures (250 MPa). These fabrication conditions are costly and lead to decomposition of non-oxide ceramics. Researchers at Rutgers have devised a method of sintering ultrahigh melting temperature covalent non-oxide ceramics at low temperatures. This sintering method exploits the conductivity of these ceramics by applying an electric field alongside heat. In addition to reducing costs by lowering the required temperature, this method can be accomplished at atmospheric pressure. The method can produce sub-100 nm grain size polycrystalline nonoxide ceramics with greater than 95{\%} density. These ceramics are produced under better chemical and microstructural control, with high fracture strength, yet low overall fabrication cost. The new technology also has the potential of continuous manufacturing and is much faster even as a batch manufacturing system. Market Application: Ceramic Manufacturing Automotive Specialty Products Aerospace and Defense Products Gas Turbines Tooling and Die Manufacture Protective Coatings High Friction Applications Nuclear Waste Management Advantages: Avoid decomposition of non-oxide ceramics (B4C, ZrB2, TiB2, Si3N4, SiC, BN) Low temperature (2/9 melting, <1000 °C) Small grain size (<100 nm) High density (>95{\%}) Rapid processing (<5 minutes) Atmospheric pressure Scalable with modest capital investment Intellectual Property & Development Status: Issued Patent. Available for licensing and/or research collaboration.",
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author = "Thomas Tsakalakos and Enver Akdoğan and Ilyas Savkliyildiz and Hulya Bicer and William Paxton and Bart Visser and Lawrence Kabacoff",
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Tsakalakos, T, Akdoğan, E, Savkliyildiz, I, Bicer, H, Paxton, W, Visser, B & Kabacoff, L 2019, Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics.

Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics. / Tsakalakos, Thomas (Inventor); Akdoğan, Enver (Inventor); Savkliyildiz, Ilyas (Inventor); Bicer, Hulya (Inventor); Paxton, William (Inventor); Visser, Bart (Inventor); Kabacoff, Lawrence (Inventor).

Research output: Innovation

TY - PAT

T1 - Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics

AU - Tsakalakos, Thomas

AU - Akdoğan, Enver

AU - Savkliyildiz, Ilyas

AU - Bicer, Hulya

AU - Paxton, William

AU - Visser, Bart

AU - Kabacoff, Lawrence

PY - 2019/1

Y1 - 2019/1

N2 - Parallel plate capacitor configuration used to apply an electric field and to achieve low-temperature sintering of a non-oxide ceramic (B4C) Invention Summary: Bulk and composite structural ceramics can be fabricated by sintering, forming particulate matter into a desired shape and then subjecting the formed body to high temperatures (2/3 of the melting temperature) and high pressures (250 MPa). These fabrication conditions are costly and lead to decomposition of non-oxide ceramics. Researchers at Rutgers have devised a method of sintering ultrahigh melting temperature covalent non-oxide ceramics at low temperatures. This sintering method exploits the conductivity of these ceramics by applying an electric field alongside heat. In addition to reducing costs by lowering the required temperature, this method can be accomplished at atmospheric pressure. The method can produce sub-100 nm grain size polycrystalline nonoxide ceramics with greater than 95% density. These ceramics are produced under better chemical and microstructural control, with high fracture strength, yet low overall fabrication cost. The new technology also has the potential of continuous manufacturing and is much faster even as a batch manufacturing system. Market Application: Ceramic Manufacturing Automotive Specialty Products Aerospace and Defense Products Gas Turbines Tooling and Die Manufacture Protective Coatings High Friction Applications Nuclear Waste Management Advantages: Avoid decomposition of non-oxide ceramics (B4C, ZrB2, TiB2, Si3N4, SiC, BN) Low temperature (2/9 melting, <1000 °C) Small grain size (<100 nm) High density (>95%) Rapid processing (<5 minutes) Atmospheric pressure Scalable with modest capital investment Intellectual Property & Development Status: Issued Patent. Available for licensing and/or research collaboration.

AB - Parallel plate capacitor configuration used to apply an electric field and to achieve low-temperature sintering of a non-oxide ceramic (B4C) Invention Summary: Bulk and composite structural ceramics can be fabricated by sintering, forming particulate matter into a desired shape and then subjecting the formed body to high temperatures (2/3 of the melting temperature) and high pressures (250 MPa). These fabrication conditions are costly and lead to decomposition of non-oxide ceramics. Researchers at Rutgers have devised a method of sintering ultrahigh melting temperature covalent non-oxide ceramics at low temperatures. This sintering method exploits the conductivity of these ceramics by applying an electric field alongside heat. In addition to reducing costs by lowering the required temperature, this method can be accomplished at atmospheric pressure. The method can produce sub-100 nm grain size polycrystalline nonoxide ceramics with greater than 95% density. These ceramics are produced under better chemical and microstructural control, with high fracture strength, yet low overall fabrication cost. The new technology also has the potential of continuous manufacturing and is much faster even as a batch manufacturing system. Market Application: Ceramic Manufacturing Automotive Specialty Products Aerospace and Defense Products Gas Turbines Tooling and Die Manufacture Protective Coatings High Friction Applications Nuclear Waste Management Advantages: Avoid decomposition of non-oxide ceramics (B4C, ZrB2, TiB2, Si3N4, SiC, BN) Low temperature (2/9 melting, <1000 °C) Small grain size (<100 nm) High density (>95%) Rapid processing (<5 minutes) Atmospheric pressure Scalable with modest capital investment Intellectual Property & Development Status: Issued Patent. Available for licensing and/or research collaboration.

KW - Ceramics

KW - Continuous Manufacturing

KW - Low Temperature

KW - Sintering

UR - http://rutgers.technologypublisher.com/tech/Method_for_Sintering_Ultrahigh_Melting_Temperature_Covalent_Non-oxide_Ceramics

M3 - Innovation

ER -

Tsakalakos T, Akdoğan E, Savkliyildiz I, Bicer H, Paxton W, Visser B et al, inventors. Method for Sintering Ultrahigh Melting Temperature Covalent Non-oxide Ceramics. 2019 Jan.