Patents by Inventor Jung-Pyung Choi
Jung-Pyung Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10577694Abstract: A method of both coating a substrate with aluminum oxide and infusing the substrate with elemental aluminum is disclosed. In one example, the method includes providing a metal powder/polymer binder slurry, the slurry having a solvent, an organic binder, metal granules and a seed element, wherein the metal granules include Al; dispersing the slurry upon a Cr-containing surface; after dispersing the slurry, exposing the slurry to air and maintaining the temperature of the slurry and substrate below 110° C. to remove at least a portion of the solvent from the slurry; and, in a combined step, both exposing the binder, metal granules and substrate to air and heating the remaining slurry and substrate at a temperature less than or equal to 1000° C. to both diffuse at least a portion of the metal of the metal granules into the substrate and coat the substrate with aluminum oxide.Type: GrantFiled: January 10, 2018Date of Patent: March 3, 2020Assignee: Battelle Memorial InstituteInventors: Jung-Pyung Choi, Jeffry W. Stevenson
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Patent number: 10378094Abstract: Reactive coating processes are provided that can include providing a coating material, reacting the coating material to form a shell about the coating material, contacting the shelled coating material with a substrate to be coated, depositing the coating material from within the shelled coating material on the substrate, and removing the shells from the substrate. Coating materials may be deposited upon a substrate to be coated and reacted to form a shell about the coating material. The coating materials can be particles and a shell can be formed about each of the individual particles.Type: GrantFiled: July 1, 2016Date of Patent: August 13, 2019Assignee: Battelle Memorial InstituteInventors: Jung-Pyung Choi, Jeffrey W. Stevenson, Kenneth Scott Weil, Yeong-Shyung Matt Chou, Jens T. Darsell, Vineet V. Joshi
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Publication number: 20180187311Abstract: A method of both coating a substrate with aluminum oxide and infusing the substrate with elemental aluminum is disclosed. In one example, the method includes providing a metal powder/polymer binder slurry, the slurry having a solvent, an organic binder, metal granules and a seed element, wherein the metal granules include Al; dispersing the slurry upon a Cr-containing surface; after dispersing the slurry, exposing the slurry to air and maintaining the temperature of the slurry and substrate below 110° C. to remove at least a portion of the solvent from the slurry; and, in a combined step, both exposing the binder, metal granules and substrate to air and heating the remaining slurry and substrate at a temperature less than or equal to 1000° C. to both diffuse at least a portion of the metal of the metal granules into the substrate and coat the substrate with aluminum oxide.Type: ApplicationFiled: January 10, 2018Publication date: July 5, 2018Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Jung-Pyung Choi, Jeffry W. Stevenson
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Patent number: 9481923Abstract: Methods of aluminizing the surface of a metal substrate. The methods of the present invention do not require establishment of a vacuum or a reducing atmosphere, as is typically necessary. Accordingly, aluminization can occur in the presence of oxygen, which greatly simplifies and reduces processing costs by allowing deposition of the aluminum coating to be performed, for example, in air. Embodiments of the present invention can be characterized by applying a slurry that includes a binder and powder granules containing aluminum to the metal substrate surface. Then, in a combined step, a portion of the aluminum is diffused into the substrate and a portion of the aluminum is oxidized by heating the slurry to a temperature greater than the melting point of the aluminum in an oxygen-containing atmosphere.Type: GrantFiled: May 21, 2009Date of Patent: November 1, 2016Assignee: Battelle Memorial InstituteInventors: Jung-Pyung Choi, Kenneth Scott Weil
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Publication number: 20160312358Abstract: Reactive coating processes are provided that can include providing a coating material, reacting the coating material to form a shell about the coating material, contacting the shelled coating material with a substrate to be coated, depositing the coating material from within the shelled coating material on the substrate, and removing the shells from the substrate. Coating materials may be deposited upon a substrate to be coated and reacted to form a shell about the coating material. The coating materials can be particles and a shell can be formed about each of the individual particles.Type: ApplicationFiled: July 1, 2016Publication date: October 27, 2016Applicant: Battelle Memorial InstituteInventors: Jung-Pyung Choi, Jeffrey W. Stevenson, Kenneth Scott Weil, Yeong-Shyung Matt Chou, Jens T. Darsell, Vineet V. Joshi
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Patent number: 9418779Abstract: A scalable process is detailed for forming bulk quantities of high-purity ?-MnBi phase materials suitable for fabrication of MnBi based permanent magnets.Type: GrantFiled: October 22, 2013Date of Patent: August 16, 2016Assignee: BATTELLE MEMORIAL INSTITUTEInventors: Jung Pyung Choi, Curt A. Lavender, Guosheng Li, Jun Cui
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Publication number: 20150110664Abstract: A scalable process is detailed for forming bulk quantities of high-purity ?-MnBi phase materials suitable for fabrication of MnBi based permanent magnets.Type: ApplicationFiled: October 22, 2013Publication date: April 23, 2015Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Jung Pyung Choi, Curt A. Lavender, Guosheng Li, Jun Cui
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Patent number: 8424747Abstract: A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.Type: GrantFiled: April 5, 2010Date of Patent: April 23, 2013Assignee: Battelle Memorial InstituteInventors: Kenneth Scott Weil, John S. Hardy, Jin Yong Kim, Jung-Pyung Choi
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Publication number: 20100297341Abstract: Methods of aluminizing the surface of a metal substrate. The methods of the present invention do not require establishment of a vacuum or a reducing atmosphere, as is typically necessary. Accordingly, aluminization can occur in the presence of oxygen, which greatly simplifies and reduces processing costs by allowing deposition of the aluminum coating to be performed, for example, in air. Embodiments of the present invention can be characterized by applying a slurry that includes a binder and powder granules containing aluminum to the metal substrate surface. Then, in a combined step, a portion of the aluminum is diffused into the substrate and a portion of the aluminum is oxidized by heating the slurry to a temperature greater than the melting point of the aluminum in an oxygen-containing atmosphere.Type: ApplicationFiled: May 21, 2009Publication date: November 25, 2010Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Jung-Pyung Choi, Kenneth Scott Weil
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Publication number: 20100218875Abstract: A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.Type: ApplicationFiled: April 5, 2010Publication date: September 2, 2010Applicant: BATTELLE MEMORIAL INSTITUTEInventors: Kenneth Scott Weil, John S. Hardy, Jin Yong Kim, Jung-Pyung Choi
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Patent number: 7691488Abstract: A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.Type: GrantFiled: June 11, 2007Date of Patent: April 6, 2010Assignee: Battelle Memorial InstituteInventors: Kenneth Scott Weil, John S. Hardy, Jin Yong Kim, Jung-Pyung Choi
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Publication number: 20080305356Abstract: A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.Type: ApplicationFiled: June 11, 2007Publication date: December 11, 2008Inventors: Kenneth Scott Weil, John S. Hardy, Jin Yong Kim, Jung-Pyung Choi
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Publication number: 20080217382Abstract: A method for joining together two or more ceramic and/or metal parts by providing a braze consisting of a mixture of copper oxide, silver, and ceramic particulate. The braze is placed upon the surfaces of the parts, which are then held together for sufficient time and at a sufficient temperature to cause the braze to form a bond between the parts. The addition of the ceramic particulate increases the viscosity of the braze, decreasing squeeze out, decreasing the formation of air pockets, decreases the formation of brittle phases by providing nucleation sites and increases the flexural strength of the joint.Type: ApplicationFiled: March 7, 2007Publication date: September 11, 2008Inventors: Jin Yong Kim, Kenneth Scott Weil, Jung-Pyung Choi