公开(公告)号：US20160003063A1

公开(公告)日：2016-01-07

申请号：US14211302

申请日：2014-03-14

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Larry Steven ROSENZWEIG ,  Reza SARRAFI-NOUR

IPC: F01D5/28 ,  F01D5/22 ,  C23C4/18 ,  C23C4/04 ,  C23C4/12 ,  F01D9/04 ,  F02C7/25

CPC classification number: F01D5/288 ,  C04B41/009 ,  C04B41/5024 ,  C04B41/5045 ,  C04B41/52 ,  C04B41/87 ,  C04B41/89 ,  C23C4/04 ,  C23C4/18 ,  F01D5/225 ,  F01D5/282 ,  F01D5/284 ,  F01D9/041 ,  F02C7/25 ,  F05D2220/32 ,  F05D2230/90 ,  F05D2240/35 ,  F05D2300/15 ,  F05D2300/211 ,  F05D2300/6033 ,  F23M2900/05004 ,  F23R3/007 ,  C04B35/565 ,  C04B35/806 ,  C04B35/584 ,  C04B35/58092 ,  C04B41/0072 ,  C04B2103/001 ,  C04B2103/0021 ,  C04B41/5096 ,  C04B41/5071 ,  C04B41/522 ,  C04B41/5042

Abstract: Articles suitable for use as high-temperature machine components include a substrate and an environmental barrier coating disposed over the substrate, where the environmental barrier coating includes at least one hermetic self-sealing layer formed from a mixture including an alkaline earth metal aluminosilicate and a rare-earth silicate, and where the at least one hermetic self-sealing layer exhibits substantially no net remnant or residual expansion when subjected to high temperature heat treatment. The environmental barrier coating can further include a bondcoat disposed between the substrate and the hermetic self-sealing layer, a topcoat disposed over the hermetic self-sealing layer, and/or an intermediate layer disposed between the hermetic self-sealing layer and the bondcoat. The intermediate layer can include a barrier material that is substantially inert with respect to silica.

Abstract translation: 适合用作高温机器部件的制品包括设置在基材上的基材和环境屏障涂层，其中环境屏障涂层包括至少一个由包括碱土金属铝硅酸盐和稀有金属的混合物形成的密封自密封层 - 硅酸盐，并且当经受高温热处理时，至少一个密封自密封层基本上不显示净残余物或残余膨胀。 环境阻隔涂层还可以包括设置在基材和密封自密封层之间的粘合涂层，设置在密封自密封层上的面漆和/或设置在密封自密封层和粘合剂涂层之间的中间层。 中间层可以包括相对于二氧化硅基本上惰性的阻挡材料。

公开(公告)号：US20200165713A1

公开(公告)日：2020-05-28

申请号：US16632648

申请日：2017-07-18

Applicant: General Electric Company

Inventor： Venkat Subramaniam VENKATARAMANI ,  Anthony Christopher MARIN ,  Neelesh Nandkumar SARAWATE ,  Stephen Francis BANCHERI ,  Larry Steven ROSENZWEIG

IPC: C23C4/11 ,  C23C4/134 ,  C23C4/18 ,  F02C7/28

Abstract: Various embodiments include a gas turbine seal and methods of forming such seal. The method of forming the seal includes forming a freestanding ceramic seal for sealing in a gas turbine by applying a ceramic material on a substrate to form a ceramic layer, removing the substrate from the ceramic layer and finishing the ceramic layer to define the freestanding ceramic seal. The method includes depositing particles of the ceramic material in one of a molten or vapor state on a surface of the substrate and quenching the ceramic material to form the ceramic layer. The ceramic material comprises yttria-stabilized zirconia having a t′ tetragonal structure. A gas turbine including the freestanding ceramic seal is additionally disclosed.

公开(公告)号：US20150233256A1

公开(公告)日：2015-08-20

申请号：US13741848

申请日：2013-01-15

Applicant: General Electric Company

Inventor： Krishnamurthy ANAND ,  James Anthony RUUD ,  Surinder Singh PABLA ,  Joshua Lee MARGOLIES ,  Padmaja PARAKALA ,  Larry Steven ROSENZWEIG

IPC: F01D5/28 ,  C23C4/02 ,  C23C4/10 ,  C23C4/12

CPC classification number: F01D5/284 ,  C23C4/02 ,  C23C4/11 ,  C23C4/134 ,  F01D5/28 ,  F01D5/288 ,  F05D2300/2118 ,  Y10T428/12549 ,  Y10T428/12618

Abstract: A thermal barrier coating system for metal components in a gas turbine engine having an ultra low thermal conductivity and high erosion resistance, comprising an oxidation-resistant bond coat formed from an aluminum rich material such as MCrAlY and a thermal insulating ceramic layer over the bond coat comprising a zirconium or hafnium oxide lattice structure (ZrO2 or HfO2) and an oxide stabilizer compound comprising one or more of the compounds ytterbium oxide (Yb2O3), yttria oxide (Y2O3), hafnium oxide (HfO2), lanthanum Oxide (La2O3), tantalum oxide (Ta2O5) or zirconium oxide (ZrO2). The invention includes a new method of forming the ceramic-based thermal barrier coatings using a liquid-based suspension containing microparticles comprised of at least one of the above compounds ranging in size between about 0.1 and 5 microns. The coatings form a tortuous path of ceramic interfaces that increase the coating toughness while preserving the ultra low thermal conductivity.

Abstract translation: 一种用于具有超低热导率和高耐侵蚀性的燃气轮机中的金属部件的隔热涂层系统，包括由富铝材料如MCrAlY形成的抗氧化粘合涂层和粘结涂层上的绝热陶瓷层 包括锆或铪氧化物晶格结构（ZrO 2或HfO 2）和包含一种或多种化合物氧化镱（Yb 2 O 3），氧化钇（Y 2 O 3），氧化铪（HfO 2），氧化镧（La 2 O 3），钽 氧化物（Ta2O5）或氧化锆（ZrO2）。 本发明包括使用包含由至少一种上述化合物构成的微粒的液体基悬浮液形成陶瓷基热障涂层的新方法，其尺寸范围为约0.1至5微米。 涂层形成陶瓷界面的曲折路径，从而提高涂层韧性，同时保持超低热导率。

公开(公告)号：US20160265367A1

公开(公告)日：2016-09-15

申请号：US14578670

申请日：2014-12-22

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Larry Steven ROSENZWEIG ,  Curtis Alan JOHNSON ,  Peter Joel MESCHTER ,  Reza SARRAFI-NOUR

IPC: F01D5/28 ,  C04B35/622 ,  C04B35/50

CPC classification number: F01D5/288 ,  C04B35/50 ,  C04B35/62222 ,  C04B41/009 ,  C04B41/52 ,  C04B41/89 ,  C04B2235/3427 ,  C04B2235/3481 ,  C04B2235/428 ,  F01D11/12 ,  F05D2230/31 ,  F05D2240/11 ,  F05D2250/21 ,  F05D2250/294 ,  F05D2300/6033 ,  Y02T50/672 ,  Y02T50/6765 ,  C04B35/565 ,  C04B35/806 ,  C04B35/584 ,  C04B41/5096 ,  C04B41/5071 ,  C04B41/522 ,  C04B41/5024 ,  C04B2103/0021 ,  C04B2103/001 ,  C04B41/524 ,  C04B41/526 ,  C04B41/5042

Abstract: Article includes a substrate, a bond coat disposed on the substrate, an environmental barrier coating disposed on the bond coat, and a patterned abradable coating disposed on the second top coat. The environmental barrier coating includes an intermediate layer disposed on the bond coat, a sealing layer disposed on the intermediate layer, a first top coat disposed on the sealing layer, and a second top coat disposed on the first top coat. The first top coat is different from the second top coat.

Abstract translation: 制品包括基材，设置在基材上的粘合涂层，设置在粘合涂层上的环境屏障涂层，以及设置在第二顶涂层上的图案化可磨损涂层。 环境保护涂层包括设置在粘合涂层上的中间层，设置在中间层上的密封层，设置在密封层上的第一顶部涂层和设置在第一顶部涂层上的第二顶部涂层。 第一面料不同于第二面料。

公开(公告)号：US20150167141A1

公开(公告)日：2015-06-18

申请号：US14107225

申请日：2013-12-16

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Larry Steven ROSENZWEIG ,  James Anthony RUUD ,  Shankar SIVARAMAKRISHNAN

IPC: C23C4/12 ,  C23C4/10 ,  F01D25/00

CPC classification number: C23C4/067 ,  C23C4/134 ,  F01D5/288 ,  Y02T50/6765 ,  Y10T428/24802

Abstract: The present application provides Calcia-Magnesia-Alumina-Silica (CMAS) (or molten silicate) resistant thermal barrier coatings (TBC). 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.

Abstract translation: 本申请提供了氧化钙 - 氧化铝 - 二氧化硅（CMAS）（或熔融硅酸盐）耐热隔热涂层（TBC）。 涂层包括非等轴，随机排列的重叠晶粒或碎片的细长生长域。 细长的生长结构域包括重叠的，随机分布的韧性和软相的碎片。 在一些实施方案中，细长生长域通过空气等离子体喷涂形成。 在一些实施方案中，韧性相是至少部分稳定的氧化锆和/或铪组合物，并且软相是CMAS（或熔融硅酸盐）反应性或抗性组合物。 在每个细长生长区域内，韧性和软相的混合物共同作用以限制CMAS的渗透，并且还提供足够的结构域韧性以最小化渗透的CMAS结晶过程中产生的开裂力。 软相可能与CMAS反应并增加其熔点，增加其粘度，并减少韧性相的不稳定性。