公开(公告)号：US06494960B1

公开(公告)日：2002-12-17

申请号：US09303755

申请日：1999-05-03

申请人： Leo Spitz Macdonald ,  D. Sangeeta ,  Mark Alan Rosenzweig

发明人： Leo Spitz Macdonald ,  D. Sangeeta ,  Mark Alan Rosenzweig

IPC分类号： C23G102

CPC分类号： C23F1/20 ,  C23F1/30 ,  C23F1/44

摘要： A method for removing an aluminide coating from a substrate includes the steps of contacting the surface of the substrate with at least one stripping composition to degrade the coating. The stripping composition includes an aliphatic or aromatic sulfonic acid, and at least one additive. The coating is then removed.

摘要翻译： 从基材上除去铝化物涂层的方法包括使基材的表面与至少一种汽提组合物接触以降低涂层的步骤。 汽提组合物包括脂族或芳族磺酸和至少一种添加剂。 然后除去涂层。

公开(公告)号：US06294261B1

公开(公告)日：2001-09-25

申请号：US09409878

申请日：1999-10-01

申请人： D. Sangeeta ,  Curtis Alan Johnson ,  Warren Arthur Nelson

发明人： D. Sangeeta ,  Curtis Alan Johnson ,  Warren Arthur Nelson

IPC分类号： B32B900

CPC分类号： C23C26/00 ,  C23C4/18 ,  C23C10/18 ,  C23C24/10 ,  C23C28/3215 ,  C23C28/324 ,  C23C28/3455 ,  C23C28/36 ,  F05B2250/62 ,  Y02T50/67

摘要： A method for smoothing the surface of a ceramic-based protective coating which exhibits roughness is disclosed. The method includes the steps of applying a ceramic-based slurry or gel coating to the protective coating surface; heating the slurry/gel coating to remove volatile material; and then further heating the slurry/gel coating to cure the coating and bond it to the underlying protective coating. The slurry/gel coating is often based on yttria-stabilized zirconia, and precursors of an oxide matrix. Related articles of manufacture are also described.

摘要翻译： 公开了一种平滑表面粗糙度的陶瓷基保护涂层表面的方法。 该方法包括以下步骤：将陶瓷基浆料或凝胶涂层施加到保护涂层表面; 加热浆料/凝胶涂层以除去挥发性物质; 然后进一步加热浆料/凝胶涂层以固化涂层并将其粘合到下面的保护涂层上。 浆料/凝胶涂层通常基于氧化钇稳定的氧化锆和氧化物基质的前体。 还描述了相关的制造方法。

公开(公告)号：US5976265A

公开(公告)日：1999-11-02

申请号：US67780

申请日：1998-04-27

申请人： D. Sangeeta ,  Leo Spitz MacDonald

发明人： D. Sangeeta ,  Leo Spitz MacDonald

IPC分类号： C23F1/20 ,  C23F1/44 ,  C23G1/02 ,  B08B3/00 ,  C09D9/00 ,  C11D14/02

CPC分类号： C23F1/44 ,  C23F1/20

摘要： A process for selectively removing an aluminide-containing coating from the surface of a metal-based substrate is disclosed. It includes the following steps:(a) contacting the surface of the substrate with at least one stripping composition to degrade the coating without severely pitting the substrate, wherein the stripping composition is selected from the group consisting of: (i) aliphatic or aromatic sulfonic acids; (ii) a solution of an inorganic acid and an organic solvent; and (iii) sulfuric acid or an aqueous solution of sulfuric acid; and then(b) removing the degraded coating without damaging the substrate.

摘要翻译： 公开了从金属基底表面选择性去除含铝化物的涂层的方法。 其包括以下步骤：（a）使基材的表面与至少一种汽提组合物接触以使涂层降解而不严重地使基底发生点蚀，其中汽提组合物选自：（i）脂族或芳族磺酸 酸; （ii）无机酸和有机溶剂的溶液; 和（iii）硫酸或硫酸水溶液; 然后（b）除去降解的涂层而不损坏基底。

公开(公告)号：US5759932A

公开(公告)日：1998-06-02

申请号：US745232

申请日：1996-11-08

申请人： D. Sangeeta ,  Lawrence Edward Szala ,  David Winfield Woodruff ,  Bangalore Aswatha Nagaraj ,  Daniel Scott McAtee ,  Clifford Lawrence Spiro

发明人： D. Sangeeta ,  Lawrence Edward Szala ,  David Winfield Woodruff ,  Bangalore Aswatha Nagaraj ,  Daniel Scott McAtee ,  Clifford Lawrence Spiro

IPC分类号： C09D1/00 ,  C09D5/00 ,  C09D7/12 ,  C23C24/08 ,  C23C28/04 ,  C04B38/06 ,  C04B35/48

CPC分类号： C23C28/04 ,  C09D1/00 ,  C09D7/1291 ,  C23C24/08 ,  C23C28/042 ,  C08K3/22 ,  C08K7/18 ,  C08K7/24 ,  Y02T50/67

摘要： An improved thermal barrier coating for metal substrates such as superalloys is provided. The coating is a slurry composition, comprising spheres of zirconia, at least some of which are hollow, contained within a porous oxide matrix, such as aluminosilicate. The slurry composition can be applied by slurry casting or similar techniques to the desired surface. Coating methods involve the application of successive layers of variations of the slurry composition, with various curing techniques used between layers and after the final coating is applied. Another embodiment of this invention embraces a composite coating, comprising (i) an oxide matrix phase; (ii) zirconia spheres embedded in the oxide matrix; and (iii) a porous phase.

摘要翻译： 提供了一种用于诸如超级合金的金属基底的改进的热障涂层。 涂层是浆料组合物，其包含氧化锆球体，其中至少一些是中空的，包含在多孔氧化物基质如硅铝酸盐中。 浆料组合物可以通过浆料浇铸或类似技术施加到所需的表面上。 涂覆方法包括施加浆料组合物的连续层的变化，在层之间和施加最终涂层之后使用各种固化技术。 本发明的另一个实施方案包括复合涂层，其包括（i）氧化物基质相; （ii）嵌入氧化物基质中的氧化锆球; 和（iii）多孔相。

公开(公告)号：US06613445B2

公开(公告)日：2003-09-02

申请号：US10046673

申请日：2002-01-16

申请人： D. Sangeeta ,  Howard John Farr

发明人： D. Sangeeta ,  Howard John Farr

IPC分类号： B32B1502

CPC分类号： C23C24/087 ,  C23C10/02 ,  C23C10/18 ,  C23C10/26 ,  Y10S428/937 ,  Y10S428/938 ,  Y10S428/941 ,  Y10T29/49318 ,  Y10T428/12063 ,  Y10T428/1209 ,  Y10T428/12104 ,  Y10T428/12736 ,  Y10T428/1275 ,  Y10T428/12875 ,  Y10T428/12889

摘要： A method for forming a metal-containing layer on a substrate is disclosed. A slurry of the metal is first deposited on the substrate; followed by heating to remove volatile material from the slurry, and to form a layer of the metal. In another embodiment, a slurry of aluminum is deposited over the slurry of the metal, before or after the metal has been heat-treated to some degree. A diffusion heat treatment results in a coating which includes the noble-metal aluminide compound. Related articles are also disclosed.

摘要翻译： 公开了一种在基板上形成含金属层的方法。 金属的浆料首先沉积在基底上; 然后加热以从浆料中除去挥发性物质，并形成一层金属。 在另一个实施方案中，在金属已被热处理一定程度之前或之后，铝的浆料沉积在金属的浆料上。 扩散热处理产生包含贵金属铝化合物的涂层。 还披露了相关文章。

公开(公告)号：US6099655A

公开(公告)日：2000-08-08

申请号：US888301

申请日：1997-07-08

申请人： Howard J. Farr ,  Jeffrey A. Bauer ,  D Sangeeta

发明人： Howard J. Farr ,  Jeffrey A. Bauer ,  D Sangeeta

IPC分类号： C23G1/14 ,  C23G5/02 ,  C23G5/032 ,  F01D5/00 ,  F01D25/00 ,  B08B3/10

CPC分类号： C23G5/02 ,  C23G1/14 ,  C23G5/032 ,  F01D25/002 ,  F01D5/005 ,  Y02T50/67 ,  Y02T50/671

摘要： A wet chemical process for removing an abrasive oxide coating from the surface of a rotating turbine engine component, such as a tooth that forms a rotating air seal with a complementary sealing member. The process generally entails subjecting the coating to a caustic solution at an elevated pressure. The caustic solution is preferably a mixture of water and a base, such as sodium or potassium hydroxide, with the addition of an organic compound being a preferred constituent in a sufficient amount as a solvent media for the caustic solution. A suitable caustic solution contains the base and water at a ratio of about one to one (1:1). If present, the organic compound may constitute about one to about ninety-eight weight percent of the solution. The process is preferably carried out in an autoclave charged with the caustic solution. Under an elevated pressure and preferably an elevated temperature, the caustic solution is capable of completely removing an alumina seal tooth coating without damaging an underlying bond coat or the tooth substrate.

摘要翻译： 一种用于从旋转的涡轮发动机部件（例如与补充密封件形成旋转空气密封件的齿）的表面去除磨蚀性氧化物涂层的湿法化学方法。 该方法通常需要在升高的压力下使涂层经受腐蚀性溶液。 苛性碱溶液优选为水和碱的混合物，例如氢氧化钠或氢氧化钾，加入作为苛性碱溶液的溶剂介质的足量的有机化合物作为优选组分。 合适的苛性碱溶液含有约1比1（1：1）的碱和水。 如果存在，有机化合物可占该溶液的约一至约百分之九十八。 该方法优选在装有苛性碱溶液的高压釜中进行。 在升高的压力下，优选升高的温度下，苛性碱溶液能够完全除去氧化铝密封齿涂层，而不会损坏下面的粘合涂层或牙基质。