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公开(公告)号：US20180327926A1
公开(公告)日：2018-11-15
申请号：US15593873
申请日：2017-05-12
Applicant: United Technologies Corporation
Inventor： Bart Antonie van Hassel , Georgios S. Zafiris , Zhongfen Ding , Michael A. Kryzman , Mark R. Jaworowski , Weina Li , Blair A. Smith , Weilong Zhang , Promila Bhaatia
Abstract: A sealing process includes applying a first reactant to a substrate having a porous structure, the first reactant comprising a chromium (III) precursor and a transition metal precursor and applying a second reactant to the first reactant, the second reactant comprising a rare earth element precursor and an alkaline earth element precursor to form reservoirs of trivalent chromium in pore space of the porous structure, and a physical barrier over the substrate and the reservoirs.
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公开(公告)号：US20180274121A1
公开(公告)日：2018-09-27
申请号：US15469663
申请日：2017-03-27
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Zhongfen Ding , Robert R. Hebert , Weilong Zhang , Bart Antonie van Hassel , Mark R. Jaworowski , Michael A. Kryzman , Blair A. Smith , Georgios S. Zafiris , Promila Bhaatia , Mark A. Brege , Shaahin Amini , Vijay V. Pujar
Abstract: A method of coating a metal article is disclosed that includes immersing a metal article having an exterior anodized layer in a bath containing a chemically active corrosion inhibitor, and applying a voltage to the article during the immersing, the voltage driving the chemically active corrosion inhibitor from the bath into the exterior anodized layer. An article is also disclosed that has a substrate comprising a metal, and a porous anodized layer formed on an exterior surface of the substrate that is infiltrated with a chemically active corrosion inhibitor, the anodized layer having an inward-facing region and an outward-facing region, the anodized layer having a greater concentration of chemically active corrosion inhibitors in the inward-facing region than in the outward-facing region.
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公开(公告)号：US11466589B2
公开(公告)日：2022-10-11
申请号：US16722050
申请日：2019-12-20
Applicant: United Technologies Corporation
Inventor： Michael R. Kracum , Xia Tang , Richard Wesley Jackson , Zhongfen Ding , James T. Beals
Abstract: A gas turbine engine article includes a substrate and an environmental barrier coating (EBC) system disposed on the substrate. The EBC system includes, from the substrate, a dense bond coat layer, a porous bond coat layer, and a topcoat layer in contact with the porous bond coat layer at an interface. The porous bond coat layer includes a matrix, oxygen-scavenging gas-evolution particles dispersed through the matrix, and engineered buffer pores. The oxygen-scavenging gas-evolution particles react with oxygen and generate a gaseous byproduct that diffuses through the interface to escape the EBC system. The engineered buffer pores buffer diffusion of gaseous byproduct to the interface by retaining at least a portion of the gaseous byproduct.
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公开(公告)号：US20210189904A1
公开(公告)日：2021-06-24
申请号：US16722050
申请日：2019-12-20
Applicant: United Technologies Corporation
Inventor： Michael R. Kracum , Xia Tang , Richard Wesley Jackson , Zhongfen Ding , James T. Beals
Abstract: A gas turbine engine article includes a substrate and an environmental barrier coating (EBC) system disposed on the substrate. The EBC system includes, from the substrate, a dense bond coat layer, a porous bond coat layer, and a topcoat layer in contact with the porous bond coat layer at an interface. The porous bond coat layer includes a matrix, oxygen-scavenging gas-evolution particles dispersed through the matrix, and engineered buffer pores. The oxygen-scavenging gas-evolution particles react with oxygen and generate a gaseous byproduct that diffuses through the interface to escape the EBC system. The engineered buffer pores buffer diffusion of gaseous byproduct to the interface by retaining at least a portion of the gaseous byproduct.
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公开(公告)号：US10919180B2
公开(公告)日：2021-02-16
申请号：US16270660
申请日：2019-02-08
Applicant: United Technologies Corporation
Inventor： Zhongfen Ding
Abstract: A repair process for an article such as an airfoil includes providing an article that has a substrate and a ceramic barrier coating disposed on the substrate, where the ceramic barrier coating has a damaged region, abrading the damaged region to provide dimple in the ceramic barrier coating, wherein a remaining region of the ceramic barrier coating adjacent the dimple remains intact, and depositing a patch of networked ceramic nanofibers in the dimple.
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Patent Agency Ranking
公开(公告)号：US10801123B2
公开(公告)日：2020-10-13
申请号：US15469663
申请日：2017-03-27
Applicant: UNITED TECHNOLOGIES CORPORATION
Inventor： Zhongfen Ding , Robert R. Hebert , Weilong Zhang , Bart Antonie van Hassel , Mark R. Jaworowski , Michael A. Kryzman , Blair A. Smith , Georgios S. Zafiris , Promila Bhaatia , Mark A. Brege , Shaahin Amini , Vijay V. Pujar
Abstract: A method of coating a metal article is disclosed that includes immersing a metal article having an exterior anodized layer in a bath containing a chemically active corrosion inhibitor, and applying a voltage to the article during the immersing, the voltage driving the chemically active corrosion inhibitor from the bath into the exterior anodized layer. An article is also disclosed that has a substrate comprising a metal, and a porous anodized layer formed on an exterior surface of the substrate that is infiltrated with a chemically active corrosion inhibitor, the anodized layer having an inward-facing region and an outward-facing region, the anodized layer having a greater concentration of chemically active corrosion inhibitors in the inward-facing region than in the outward-facing region.
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公开(公告)号：US20200256200A1
公开(公告)日：2020-08-13
申请号：US16270680
申请日：2019-02-08
Applicant: United Technologies Corporation
Inventor： Zhongfen Ding , Elisa M. Zaleski
IPC: F01D5/28 , C04B35/622 , C04B35/48
Abstract: An article includes a substrate, a ceramic barrier coating, and a layer of networked ceramic nanofibers. The ceramic barrier coating is disposed on the substrate and has a porous columnar microstructure. The layer of networked ceramic nanofibers is disposed on the ceramic barrier layer and seals the pores of the porous columnar microstructure.
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公开(公告)号：US20200254648A1
公开(公告)日：2020-08-13
申请号：US16270660
申请日：2019-02-08
Applicant: United Technologies Corporation
Inventor： Zhongfen Ding
Abstract: A repair process for an article such as an airfoil includes providing an article that has a substrate and a ceramic barrier coating disposed on the substrate, where the ceramic barrier coating has a damaged region, abrading the damaged region to provide dimple in the ceramic barrier coating, wherein a remaining region of the ceramic barrier coating adjacent the dimple remains intact, and depositing a patch of networked ceramic nanofibers in the dimple.
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公开(公告)号：US20170356092A1
公开(公告)日：2017-12-14
申请号：US15176699
申请日：2016-06-08
Applicant: United Technologies Corporation
Inventor： Zhongfen Ding , Mark R. Jaworowski
CPC classification number: C23F1/28 , C23G1/10 , F01D5/005 , F01D5/288 , F05D2220/32 , F05D2230/10 , F05D2300/177 , F05D2300/21 , F05D2300/228 , F05D2300/229 , F05D2300/608
Abstract: During a material removal method, a component is received that includes a component body and a coating on the component body. The component body includes metallic first material. The coating includes second material that is different from the first material. A solution is received that includes nitric acid and hydrogen peroxide. At least a portion of the coating is subjected to the solution in order to remove at least some of the second material from the component.
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公开(公告)号：US20170350840A1
公开(公告)日：2017-12-07
申请号：US15174092
申请日：2016-06-06
Applicant: United Technologies Corporation
Inventor： Zhongfen Ding , Mark R. Jaworowski
IPC: G01N27/14
Abstract: A method of assessing galvanic electronic isolation of two components at a joint of the two components includes measuring a first electrical resistance at a first condition across a joint of two components and comparing the first electrical resistance to a threshold resistance. The comparison of the first electrical resistance to the threshold resistance is indicative of a degree of electrical isolation of the two components. A second electrical resistance is measured at a second condition and the second electrical resistance is compared to the first electrical resistance. The result of the comparison of the second electrical resistance to the first electrical resistance is indicative of a type of electrical connection between the two components.
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