公开(公告)号：US20140220378A1

公开(公告)日：2014-08-07

申请号：US13542057

申请日：2012-07-05

申请人： Bangalore Aswatha Nagaraj ,  Douglas Gerard Konitzer ,  Julie Marie Chapman ,  Venkat Subramaniam Venkataramani

发明人： Bangalore Aswatha Nagaraj ,  Douglas Gerard Konitzer ,  Julie Marie Chapman ,  Venkat Subramaniam Venkataramani

IPC分类号： F01D25/00 ,  C04B35/48 ,  F01D5/28

CPC分类号： F01D25/007 ,  C04B35/48 ,  C23C4/11 ,  C23C4/18 ,  C23C28/3215 ,  C23C28/3455 ,  C23C28/347 ,  C23C30/00 ,  F01D5/284 ,  F01D5/288 ,  Y10T428/12549 ,  Y10T428/12618 ,  Y10T428/2495 ,  Y10T428/24967

摘要： Coating systems and processes by which the coating systems can be deposited to be resistant to contaminants, and particularly resistant to infiltration and damage caused by CMAS. The coating systems include inner and outer ceramic layers. The inner ceramic layer consists essentially of zirconia stabilized by about 6 to about 9 weight percent yttria and optionally contains greater than 0.5 to 10 weight percent hafnium oxide. The outer ceramic layer overlies and contacts the inner ceramic layer to define the outermost surface of the coating system. The outer ceramic layer consists essentially of zirconia stabilized by about 25 to about 75 weight percent yttria, has a thickness that is less than the thickness of the inner ceramic layer and further contains greater than 0.5 to 10 weight percent hafnium oxide and optionally 1 to 10 weight percent tantalum oxide. The outer ceramic layer has a porosity level that is lower than that of the inner ceramic layer.

摘要翻译： 可以将涂层系统沉积以抵抗污染物，特别是对由CMAS引起的渗透和损害的涂层系统和工艺。 涂层系统包括内部和外部陶瓷层。 内部陶瓷层主要由由约6至约9重量％的氧化钇稳定的氧化锆组成，并且任选地包含大于0.5至10重量％的氧化铪。 外陶瓷层覆盖并接触内陶瓷层以限定涂层系统的最外表面。 外部陶瓷层基本上由约25至约75重量％的氧化钇稳定的氧化锆组成，其厚度小于内部陶瓷层的厚度，并且还包含大于0.5至10重量％的氧化铪和任选的1至10个 重量百分比的氧化钽。 外陶瓷层的孔隙率水平低于内陶瓷层的孔隙度。

公开(公告)号：US20130095344A1

公开(公告)日：2013-04-18

申请号：US13341247

申请日：2011-12-30

申请人： Bangalore Aswatha Nagaraj ,  Thomas John Tomlinson

发明人： Bangalore Aswatha Nagaraj ,  Thomas John Tomlinson

IPC分类号： B32B18/00 ,  C23C4/18 ,  C23C4/04 ,  B32B15/04 ,  C23C4/12

CPC分类号： C23C4/105 ,  C04B35/486 ,  C04B35/505 ,  C04B2235/3225 ,  C04B2235/3244 ,  C04B2235/76 ,  C23C4/02 ,  C23C4/11 ,  C23C4/18 ,  C23C28/3215 ,  C23C28/3455 ,  Y10T428/12549 ,  Y10T428/12618 ,  Y10T428/2495

摘要： Coating systems and processes by which the coating systems can be deposited to be resistant to contaminants, and particularly resistant to infiltration and damage caused by CMAS. The coating systems include inner and outer ceramic layers, each having a microstructure characterized by splats and horizontal porosity. The inner ceramic layer consists essentially of zirconia stabilized by about 6 to about 9 weight percent yttria. The outer ceramic layer overlies and contacts the inner ceramic layer to define the outermost surface of the coating system. The outer ceramic layer consists essentially of zirconia stabilized by about 25 to about 75 weight percent yttria, has a thickness that is less than the thickness of the inner ceramic layer, and has a porosity level that is lower than that of the inner ceramic layer.

摘要翻译： 可以将涂层系统沉积以抵抗污染物，特别是对由CMAS引起的渗透和损害的涂层系统和工艺。 涂覆系统包括内部和外部陶瓷层，每个具有由splats和水平孔隙度表征的微观结构。 内部陶瓷层主要由由约6至约9重量％的氧化钇稳定的氧化锆组成。 外陶瓷层覆盖并接触内陶瓷层以限定涂层系统的最外表面。 外部陶瓷层主要由由约25至约75重量％的氧化钇稳定的氧化锆组成，其厚度小于内部陶瓷层的厚度，并且具有低于内部陶瓷层的厚度的孔隙率水平。

公开(公告)号：US20090169914A1

公开(公告)日：2009-07-02

申请号：US11964953

申请日：2007-12-27

申请人： Ming Fu ,  Ramgopal Darolia ,  Mark Gorman ,  Bangalore Aswatha Nagaraj

发明人： Ming Fu ,  Ramgopal Darolia ,  Mark Gorman ,  Bangalore Aswatha Nagaraj

IPC分类号： B32B15/20 ,  B32B15/00

CPC分类号： C23C28/321 ,  C23C28/3215 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/36 ,  Y02T50/67 ,  Y10T428/12458 ,  Y10T428/12667

摘要： Thermal barrier coating systems for use with hot section components of a gas turbine engine include an inner layer overlying a bond coated substrate and a top layer overlying at least a portion of the inner layer. The inner layer includes a thermal barrier material such as yttria-stabilized zirconia. The top layer includes a rare earth aluminate. The thicknesses and microstructures of the layers may be varied depending on the type of component to be coated. Articles incorporating the thermal barrier coating system exhibit improved resistance to CMAS infiltration

摘要翻译： 用于燃气涡轮发动机的热段部件的热障涂层系统包括覆盖粘合涂覆的基底的内层和覆盖至少一部分内层的顶层。 内层包括热阻材料，例如氧化钇稳定的氧化锆。 顶层包括稀土铝酸盐。 层的厚度和微观结构可以根据待涂覆的组分的类型而变化。 结合热障涂层系统的制品具有改善的抗CMAS浸润性能

公开(公告)号：US07226668B2

公开(公告)日：2007-06-05

申请号：US10317759

申请日：2002-12-12

申请人： Bangalore Aswatha Nagaraj ,  Irene Spitsberg

发明人： Bangalore Aswatha Nagaraj ,  Irene Spitsberg

IPC分类号： B32B15/04 ,  F03B3/12

CPC分类号： C23C4/02 ,  C23C4/11 ,  C23C28/3215 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/36 ,  F01D5/288 ,  Y10T428/12611 ,  Y10T428/12806 ,  Y10T428/24926

摘要： A thermal barrier coating for an underlying metal substrate of articles that operate at, or are exposed to, high temperatures, as well as being exposed to environmental contaminant compositions. This coating comprises an inner layer nearest to the underlying metal substrate comprising a ceramic thermal barrier coating material, as well as an outer layer having an exposed surface and comprising a CMAS-reactive material in an amount up to 100% and sufficient to protect the thermal barrier coating at least partially against CMAS that becomes deposited on the exposed surface, the CMAS-reactive material comprising an alkaline earth aluminate or alkaline earth aluminosilicate where the alkaline earth is selected from barium, strontium and mixtures thereof, and optionally a ceramic thermal barrier coating material. This coating can be used to provide a thermally protected article having a metal substrate and optionally a bond coat layer adjacent to and overlaying the metal substrate. The thermal barrier coating can be prepared by forming the inner layer of the ceramic thermal barrier coating material, followed by depositing the CMAS-reactive material, or codepositing the CMAS-reactive material and the ceramic thermal barrier coating material, to form the outer layer.

摘要翻译： 用于在高温下操作或暴露于高温以及暴露于环境污染物组合物的制品的基础金属基底的热障涂层。 该涂层包括最接近下面的金属基底的内层，其包括陶瓷热障涂层材料，以及具有暴露表面的外层，并且包含高达100％量的CMAS反应性材料，并足以保护热 至少部分地抵抗沉积在暴露表面上的CMAS的阻挡涂层，CMAS反应性材料包含碱土金属铝酸盐或碱土金属硅铝酸盐，其中碱土选自钡，锶及其混合物，以及任选的陶瓷热障涂层 材料。 该涂层可用于提供具有金属基底和任选的与金属基底相邻并覆盖金属基底的粘合涂层的热保护制品。 可以通过形成陶瓷热障涂层材料的内层，然后沉积CMAS反应性材料或共沉积CMAS反应性材料和陶瓷热障涂层材料来形成外层来制备热障涂层。

公开(公告)号：US06933066B2

公开(公告)日：2005-08-23

申请号：US10317731

申请日：2002-12-12

申请人： Bangalore Aswatha Nagaraj ,  John Frederick Ackerman ,  William Randolph Stowell ,  Ching-Pang Lee

发明人： Bangalore Aswatha Nagaraj ,  John Frederick Ackerman ,  William Randolph Stowell ,  Ching-Pang Lee

IPC分类号： B32B3/00 ,  B32B15/04 ,  C23C16/06 ,  C23C28/00 ,  C23C30/00 ,  F03B3/12

CPC分类号： C23C28/00 ,  C23C30/00 ,  F01D5/288 ,  F05D2240/11 ,  F05D2300/21 ,  Y10T428/24917 ,  Y10T428/24926 ,  Y10T428/265

摘要： A thermal barrier coating for an underlying metal substrate of articles that operate at, or are exposed to, high temperatures, as well as being exposed to environmental contaminant compositions. This coating includes an inner layer nearest to the underlying metal substrate comprising a ceramic thermal barrier coating material, as well as an outer layer having an exposed surface and comprising tantalum oxide in an amount sufficient to protect the thermal barrier coating at least partially against environmental contaminants that become deposited on the exposed surface and optionally an intermediate layer between the inner and outer layers comprising alumina. This coating can be used to provide a thermally protected article having a metal substrate and optionally a bond coat layer adjacent to and overlaying the metal substrate. The thermal barrier coating can be prepared by forming the inner layer comprising the ceramic thermal barrier material, optionally forming the intermediate layer comprising the alumina over the inner layer, and then forming the outer layer comprising the tantalum oxide over the intermediate (inner) layer.

摘要翻译： 用于在高温下操作或暴露于高温以及暴露于环境污染物组合物的制品的基础金属基底的热障涂层。 该涂层包括最接近底层金属基底的内层，其包含陶瓷热障涂层材料，以及具有暴露表面的外层，并且包含足以保护热障涂层的氧化钽至少部分地防止环境污染物 其沉积在暴露的表面上，并且任选地沉积在包含氧化铝的内层和外层之间的中间层。 该涂层可用于提供具有金属基底和任选的与金属基底相邻并覆盖金属基底的粘合涂层的热保护制品。 可以通过形成包含陶瓷热障材料的内层，任选地在内层上形成包含氧化铝的中间层，然后在中间（内）层上形成包含氧化钽的外层来制备热障涂层。

公开(公告)号：US06627323B2

公开(公告)日：2003-09-30

申请号：US10079036

申请日：2002-02-19

申请人： Bangalore Aswatha Nagaraj ,  Jeffrey Lawrence Williams ,  John Frederick Ackerman

发明人： Bangalore Aswatha Nagaraj ,  Jeffrey Lawrence Williams ,  John Frederick Ackerman

IPC分类号： B32B1504

CPC分类号： C23C28/321 ,  C23C28/3215 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/42 ,  F01D5/288 ,  F05D2230/90 ,  F05D2300/611 ,  Y10T428/12611 ,  Y10T428/26 ,  Y10T428/265

摘要： A protective coating system and method for protecting a thermal barrier coating from CMAS infiltration. The coating system comprises inner and outer alumina layers and a platinum-group metal layer therebetween. The outer alumina layer is intended as a sacrificial layer that reacts with molten CMAS, forming a compound with a melting temperature significantly higher than CMAS. As a result, the reaction product of the outer alumina layer and CMAS resolidifies before it can infiltrate the TBC. The platinum-group metal layer is believed to serve as a barrier to infiltration of CMAS into the TBC, while the inner alumina layer appears to enhance the ability of the platinum-group metal layer to prevent CMAS infiltration.

摘要翻译： 保护涂层系统和保护热障涂层免受CMAS渗透的方法。 涂层系统包括内氧化铝层和外氧化铝层以及铂族金属层。 外氧化铝层旨在作为与熔融CMAS反应的牺牲层，形成熔点显着高于CMAS的化合物。 结果，外部氧化铝层和CMAS的反应产物在其可以渗透TBC之前再次固化。 认为铂族金属层可以作为CMAS渗透到TBC中的屏障，而内层氧化铝层似乎增强了铂族金属层防止CMAS渗透的能力。

公开(公告)号：US06607852B2

公开(公告)日：2003-08-19

申请号：US09894249

申请日：2001-06-27

申请人： Irene Spitsberg ,  Hongyu Wang ,  Bangalore Aswatha Nagaraj

发明人： Irene Spitsberg ,  Hongyu Wang ,  Bangalore Aswatha Nagaraj

IPC分类号： B32B904

CPC分类号： C04B41/009 ,  C04B41/52 ,  C04B41/89 ,  Y10T428/24942 ,  Y10T428/263 ,  Y10T428/265 ,  C04B41/5035 ,  C04B41/5037 ,  C04B41/5024 ,  C04B41/5031 ,  C04B41/5042 ,  C04B2111/00405 ,  C04B35/565 ,  C04B35/584 ,  C04B35/806

摘要： Improved adhesion of thermal barrier coating systems to nonmetallic substrates using a layer of silica on an underlying nonmetallic substrate that includes a silicon containing material is described. The improved adhesion occurs because the improved thermal barrier system improves the temperature capability of the system by providing a layer adjacent the substrate that has improved thermal performance and that is not subject to deterioration. The application of a silica layer of predetermined thickness adjacent the substrate also forms a diffusion barrier for oxygen while eliminating the need to transform an external layer of the substrate by a pre-oxidation step. This diffusion barrier prevents any oxidizable component of the substrate from decomposing. The thermal/environmental barrier coating (T/EBC) system includes an intermediate layer containing YSZ and BSAS, mullite and/or alumina, which is preferably used in combination with a mullite layer that overlies the surface of the silica layer, a layer of BSAS between the mullite layer and the intermediate layer, and a thermal barrier coating of YSZ overlying the intermediate layer.

摘要翻译： 描述了在包括含硅材料的下面的非金属基底上使用一层二氧化硅改善了热障涂层系统对非金属基底的粘合性。 改善的粘合性是因为改进的热障系统通过提供具有改善的热性能并且不会劣化的衬底附近的层来提高系统的温度能力。 在衬底附近施加预定厚度的二氧化硅层还形成氧的扩散阻挡层，而不需要通过预氧化步骤转化衬底的外层。 该扩散阻挡层防止基底的任何可氧化组分分解。 热/环境屏障涂层（T / EBC）系统包括含有YSZ和BSAS，莫来石和/或氧化铝的中间层，其优选与叠加在二氧化硅层表面上的莫来石层组合使用，BSAS层 在莫来石层和中间层之间，以及覆盖中间层的YSZ的热障涂层。

公开(公告)号：US08062759B2

公开(公告)日：2011-11-22

申请号：US11964953

申请日：2007-12-27

申请人： Ming Fu ,  Ramgopal Darolia ,  Mark Gorman ,  Bangalore Aswatha Nagaraj

发明人： Ming Fu ,  Ramgopal Darolia ,  Mark Gorman ,  Bangalore Aswatha Nagaraj

IPC分类号： B32B9/00

CPC分类号： C23C28/321 ,  C23C28/3215 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/36 ,  Y02T50/67 ,  Y10T428/12458 ,  Y10T428/12667

摘要： Thermal barrier coating systems for use with hot section components of a gas turbine engine include an inner layer overlying a bond coated substrate and a top layer overlying at least a portion of the inner layer. The inner layer includes a thermal barrier material such as yttria-stabilized zirconia. The top layer includes a rare earth aluminate. The thicknesses and microstructures of the layers may be varied depending on the type of component to be coated. Articles incorporating the thermal barrier coating system exhibit improved resistance to CMAS infiltration.

摘要翻译： 用于燃气涡轮发动机的热段部件的热障涂层系统包括覆盖粘合涂覆的基底的内层和覆盖至少一部分内层的顶层。 内层包括热阻材料，例如氧化钇稳定的氧化锆。 顶层包括稀土铝酸盐。 层的厚度和微观结构可以根据待涂覆的组分的类型而变化。 结合热障涂层系统的制品具有改善的抗CMAS浸润性能。

公开(公告)号：US07597966B2

公开(公告)日：2009-10-06

申请号：US11160164

申请日：2005-06-10

申请人： Irene Spitsberg ,  Brett Allen Rohrer Boutwell ,  Robert William Bruce ,  Curtis Alan Johnson ,  Bangalore Aswatha Nagaraj ,  William Scott Walston

发明人： Irene Spitsberg ,  Brett Allen Rohrer Boutwell ,  Robert William Bruce ,  Curtis Alan Johnson ,  Bangalore Aswatha Nagaraj ,  William Scott Walston

IPC分类号： B32B9/00

CPC分类号： C23C28/321 ,  C23C28/3215 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  Y10T428/249953 ,  Y10T428/249955

摘要： A thermal barrier coating and deposition process for a component intended for use in a hostile thermal environment, such as the turbine, combustor and augmentor components of a gas turbine engine. The TBC has a first coating portion on at least a first surface portion of the component. The first coating portion is formed of a ceramic material to have at least an inner region, at least an outer region overlying the inner region, and a columnar microstructure whereby the inner and outer regions comprise columns of the ceramic material. The columns of the inner region are more closely spaced than the columns of the outer region so that the inner region of the first coating portion is denser than the outer region of the first coating portion, wherein the higher density of the inner region promotes the impact resistance of the first coating portion.

摘要翻译： 用于在敌对热环境中使用的部件的热障涂层和沉积工艺，例如燃气轮机的涡轮机，燃烧器和增压器部件。 所述TBC在所述部件的至少第一表面部分上具有第一涂覆部分。 第一涂覆部分由陶瓷材料形成，至少具有内部区域，至少覆盖内部区域的外部区域和柱状微结构，由此内部和外部区域包括陶瓷材料的列。 内部区域的列与外部区域的列紧密地间隔开，使得第一涂覆部分的内部区域比第一涂覆部分的外部区域更致密，其中内部区域的较高密度促进了冲击 第一涂布部分的电阻。

公开(公告)号：US20090169752A1

公开(公告)日：2009-07-02

申请号：US11964960

申请日：2007-12-27

申请人： Ming Fu ,  Ramgopal Darolia ,  Mark Gorman ,  Bangalore Aswatha Nagaraj

发明人： Ming Fu ,  Ramgopal Darolia ,  Mark Gorman ,  Bangalore Aswatha Nagaraj

IPC分类号： B05D3/00 ,  B05D7/00

CPC分类号： C23C4/02 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/325 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/36 ,  Y02T50/67 ,  Y02T50/6765

摘要： Methods for providing improved resistance to CMAS infiltration for hot section components of a gas turbine engine. Exemplary methods include coating a substrate with a thermal barrier coating system by overlying a bond coated substrate with an inner thermal barrier layer comprised of a thermal barrier material such as yttria-stabilized zirconia. A top layer, including a rare-earth aluminate, is deposited so as to overlie at least a portion of the inner layer. Deposition processes and coating thicknesses may be tailored to the type of component to be coated.

摘要翻译： 提供对燃气涡轮发动机的热段部件的CMAS渗透的改进的抗性的方法。 示例性的方法包括通过用粘合剂涂覆的基底覆盖由热阻挡材料如氧化钇稳定的氧化锆构成的内部热障层，来涂覆具有热障涂层体系的基底。 包括稀土铝酸盐的顶层被沉积以覆盖至内层的至少一部分。 沉积工艺和涂层厚度可以根据要涂覆的部件的类型进行调整。