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公开(公告)号：US20160115819A1
公开(公告)日：2016-04-28
申请号：US14525586
申请日：2014-10-28
Applicant: General Electric Company
Inventor： Mohandas Nayak , Shankar Sivaramakrishnan , Venkat Subramaniam Venkataramani , Alok Mani Srivastava , Shahana Chatterjee
CPC classification number: C23C14/08 , C04B35/00 , C04B35/16 , C04B35/495 , C04B2235/3208 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3251 , C04B2235/3255 , C04B2235/76 , C23C4/126 , C23C4/129 , C23C4/131 , C23C4/134 , C23C28/042 , C23C28/321 , C23C28/3215 , C23C28/3455 , F01D5/288 , F05D2230/31 , F05D2230/90 , F05D2300/15 , F05D2300/211 , F05D2300/2112 , Y02T50/671
Abstract: An article including a substrate and a plurality of coatings disposed on the substrate is presented. The plurality of coatings includes a thermal barrier coating disposed on the substrate; and a protective coating including a calcium-magnesium-aluminum-silicon-oxide (CMAS)-reactive material disposed on the thermal barrier coating. The CMAS-reactive material has an orthorhombic weberite crystal structure. The CMAS-reactive material is present in the plurality of coatings in an effective amount to react with a CMAS composition at an operating temperature of the thermal barrier coating, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition. A method of making the article and a related turbine engine component are also presented.
Abstract translation: 提出了一种包括基板和设置在基板上的多个涂层的制品。 多个涂层包括设置在基板上的热障涂层; 以及包括设置在热障涂层上的钙镁 - 铝 - 氧化硅（CMAS）反应材料的保护涂层。 CMAS反应性材料具有斜方晶系的Weberite晶体结构。 CMAS反应性材料以有效量存在于多个涂层中，以在热障涂层的操作温度下与CMAS组合物反应，从而形成具有大于或等于 CMAS组成。 还提出了制造物品和相关涡轮发动机部件的方法。
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公开(公告)号：US20160115818A1
公开(公告)日：2016-04-28
申请号：US14524072
申请日：2014-10-27
Applicant: General Electric Company
Inventor： Digamber Gurudas Porob , Shankar Sivaramakrishnan , Venkat Subramaniam Venkataramani , Mohandas Nayak , Gopi Chandran Ramachandran
CPC classification number: C23C14/08 , C04B35/00 , C04B35/16 , C04B35/447 , C04B2235/3201 , C04B2235/3208 , C04B2235/3217 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3244 , C04B2235/3248 , C04B2235/3418 , C04B2235/80 , C23C4/126 , C23C4/129 , C23C4/131 , C23C4/134 , C23C14/06 , C23C28/042 , C23C28/321 , C23C28/3215 , C23C28/3455 , F05D2300/6111
Abstract: An article including a substrate and a plurality of coatings disposed on the substrate is presented. The plurality of coatings includes a thermal barrier coating disposed on the substrate; and a protective coating including a calcium-magnesium-aluminum-silicon-oxide (CMAS)-reactive material disposed on the thermal barrier coating. The CMAS-reactive material includes an NZP-type material. The CMAS-reactive material is present in the plurality of coatings in an effective amount to react with a CMAS composition at an operating temperature of the thermal barrier coating, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition. A method of making the article and a related turbine engine component are also presented.
Abstract translation: 提出了一种包括基板和设置在基板上的多个涂层的物品。 多个涂层包括设置在基板上的热障涂层; 以及包括设置在热障涂层上的钙镁 - 铝 - 氧化硅（CMAS）反应材料的保护涂层。 CMAS反应性材料包括NZP型材料。 CMAS反应性材料以有效量存在于多个涂层中，以在热障涂层的操作温度下与CMAS组合物反应，从而形成具有大于或等于 CMAS组成。 还提出了制造物品和相关涡轮发动机部件的方法。
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公开(公告)号：US20200024718A1
公开(公告)日：2020-01-23
申请号：US16218885
申请日：2018-12-13
Applicant: General Electric Company
Abstract: The present application provides Calcia-Magnesia-Alumina-Silica (CMAS) (or molten silicate) resistant thermal barrier coatings (IBC). The coatings include elongate growth domains of non-equiaxed, randomly arranged overlapping grains or splats. The elongate growth domains include overlapping individual, randomly distributed splats of tough and soft phases. In some embodiments, the elongate growth domains are formed via air plasma spray. In some embodiments, the tough phases are at least partially stabilized zirconia and/or hafnia compositions, and the soft phases are CMAS (or molten silicate) reactive or resistant compositions. Within each elongate growth domain, the mixture of the tough and soft phases act together to limit penetration of CMAS and also provide sufficient domain toughness to minimize cracking forces produced during crystallization of infiltrated CMAS. The soft phases may react with the CMAS and increase its melting point, increase its viscosity, and reduce the destabilization of the tough phases.
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Patent Agency Ranking
公开(公告)号：US10364701B2
公开(公告)日：2019-07-30
申请号：US15370447
申请日：2016-12-06
Applicant: General Electric Company
Inventor： Hrishikesh Keshavan , Byron Andrew Pritchard, Jr. , Shankar Sivaramakrishnan , Julie Marie Chapman , Ambarish Jayant Kulkarni , Bernard Patrick Bewlay , Mehmet M. Dede , Larry Steven Rosenzweig
Abstract: A coated component, along with methods of its formation, restoration, and use, is provided. The coated component may include a substrate defining a surface; a thermal barrier coating on the surface of the substrate; a layer of environmental contaminant compositions (e.g., CMAS) on the thermal barrier coating; and a chemical barrier coating on the layer of environmental contaminant compositions.
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公开(公告)号：US10221703B2
公开(公告)日：2019-03-05
申请号：US14950718
申请日：2015-11-24
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Shankar Sivaramakrishnan , Larry Steven Rosenzweig
Abstract: An article having a damage-tolerant thermal barrier coating includes a plurality of coating layers disposed over a substrate. The plurality of coatings comprises an inner layer and an outer layer. The outer layer is more resistant to infiltration by nominal CMAS relative to 8 weight percent yttria-stabilized zirconia at a temperature of 1300 degrees Celsius. The inner layer has, in a temperature range from about 1000 degrees Celsius to about 1200 degrees Celsius, a thermal resistance in a range from about 9×10−5 degree Kelvin per watt to about 23×10−5 degree Kelvin per watt.
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公开(公告)号：US10201831B2
公开(公告)日：2019-02-12
申请号：US14963256
申请日：2015-12-09
Applicant: General Electric Company
Inventor： Shankar Sivaramakrishnan , Wayne Charles Hasz , Kristen Hall Brosnan , James Edward Murphy
IPC: B05D1/02 , F01D5/28 , G01N23/223 , G01N21/84 , C23C4/131 , C23C4/134 , C04B41/50 , C09K11/77 , C23C14/22 , C23C16/44 , G01N21/64 , C23C30/00 , F01D5/00
Abstract: Provided herein are methods and compositions which allow for efficient inspection, maintenance and repair of ceramic coatings.
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公开(公告)号：US09803484B2
公开(公告)日：2017-10-31
申请号：US14576760
申请日：2014-12-19
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Venkat Subramaniam Venkataramani , Shahana Chatterjee , Mohandas Nayak , Shankar Sivaramakrishnan
CPC classification number: F01D5/288 , C01G25/00 , C01G33/00 , C01G35/00 , C01P2002/34 , F05D2300/2112 , Y02T50/672
Abstract: Articles, such as components for high temperature turbomachinery components, include one or more coatings bearing certain perovskite compositions resistant to incursion by liquid calcium-magnesium-aluminum-silicon-oxide (CMAS) materials during service. The CMAS-reactive material includes a perovskite-structured oxide, which comprises a) a rare earth element, b) niobium, tantalum or a combination of tantalum and niobium, and c) oxygen. The CMAS-reactive material is present in an effective amount to react with a CMAS composition at an operating temperature, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition.
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公开(公告)号：US09790587B2
公开(公告)日：2017-10-17
申请号：US14525586
申请日：2014-10-28
Applicant: General Electric Company
Inventor： Mohandas Nayak , Shankar Sivaramakrishnan , Venkat Subramaniam Venkataramani , Alok Mani Srivastava , Shahana Chatterjee
IPC: F01D25/00 , F01D5/28 , C23C14/08 , C23C14/22 , C23C4/12 , C04B35/00 , C23C28/04 , C23C28/00 , C23C4/131 , C23C4/129 , C23C4/126 , C23C4/134
CPC classification number: C23C14/08 , C04B35/00 , C04B35/16 , C04B35/495 , C04B2235/3208 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3251 , C04B2235/3255 , C04B2235/76 , C23C4/126 , C23C4/129 , C23C4/131 , C23C4/134 , C23C28/042 , C23C28/321 , C23C28/3215 , C23C28/3455 , F01D5/288 , F05D2230/31 , F05D2230/90 , F05D2300/15 , F05D2300/211 , F05D2300/2112 , Y02T50/671
Abstract: An article including a substrate and a plurality of coatings disposed on the substrate is presented. The plurality of coatings includes a thermal barrier coating disposed on the substrate; and a protective coating including a calcium-magnesium-aluminum-silicon-oxide (CMAS)-reactive material disposed on the thermal barrier coating. The CMAS-reactive material has an orthorhombic weberite crystal structure. The CMAS-reactive material is present in the plurality of coatings in an effective amount to react with a CMAS composition at an operating temperature of the thermal barrier coating, thereby forming a reaction product having one or both of melting temperature and viscosity greater than that of the CMAS composition. A method of making the article and a related turbine engine component are also presented.
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