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    • 14. 发明申请
    • PROCESS FOR A BETA-PHASE NICKEL ALUMINIDE OVERLAY COATING
    • 用于BET相镍镍氧化物覆层涂料的方法
    • US20050011593A1
    • 2005-01-20
    • US10604368
    • 2003-07-15
    • Theodore GrossmanRamgopal DaroliaJoseph Rigney
    • Theodore GrossmanRamgopal DaroliaJoseph Rigney
    • C23C4/18C23C14/16C23C14/58C23C26/00C23C28/00C22F1/10
    • C23C14/5886C23C4/18C23C14/16C23C26/00C23C28/3215C23C28/345C23C28/3455
    • A process for forming a beta-phase nickel aluminide (NiAl) overlay coating that is suitable for use as a bond coat for a thermal barrier coating (TBC). The overlay coating is deposited by a method that produces a generally columnar grain structure in which grains extend through the coating such that at least some grain boundaries are open at the coating surface. The coating is then peened with a particulate media, followed by heating the overlay coating to a temperature sufficient to cause the overlay coating to recrystallize and form new grain boundaries that are not open to the outer surface of the coating and significantly less susceptible to accelerated oxidation than the original grain boundaries. The particulate media is formed of a composition containing nickel and aluminum, such that an oxide scale that forms on the surface of the coating after the peening operation is substantially free of deleterious oxide compounds, notably iron-containing spinels.
    • 用于形成适合用作热障涂层(TBC)的粘合涂层的β-相镍铝化物(NiAl)覆盖涂层的方法。 覆盖涂层通过产生大致柱状晶粒结构的方法沉积,其中晶粒延伸穿过涂层,使得至少一些晶界在涂层表面开口。 然后用颗粒介质对涂层进行喷丸处理,然后将覆盖涂层加热至足以使覆盖涂层再结晶并形成不对涂层外表面开放的新晶粒边界,并显着降低易受加速氧化影响的温度 比原来的晶界。 颗粒介质由包含镍和铝的组合物形成,使得在喷丸操作之后在涂层表面上形成的氧化皮基本上不含有害氧化物化合物,特别是含铁尖晶石。
    • 15. 发明申请
    • METHOD FOR REPAIRING COATED COMPONENTS USING NIAL BOND COATS
    • 使用NIAL BOND COATS修复涂层组件的方法
    • US20060029723A1
    • 2006-02-09
    • US10714430
    • 2003-11-13
    • Joseph RigneyChing-Pang LeeRamgopal Darolia
    • Joseph RigneyChing-Pang LeeRamgopal Darolia
    • C23C16/52B05D3/00
    • B23P6/002C23C10/02C23C10/60C23C28/321C23C28/3215C23C28/345C23C28/3455C23C28/36C25D3/50C25D7/00C25D7/008F05B2230/31F05B2230/90F05C2253/12
    • According to an embodiment of the invention, a method for repairing a coated high pressure turbine blade, which has been exposed to engine operation, to restore coated airfoil contour dimensions of the blade, and improve upon the prior bond coat is disclosed. The method comprises providing an engine run high pressure turbine blade including a base metal substrate made of a nickel-based alloy and having thereon a thermal barrier coating system. The thermal barrier coating system comprises a diffusion bond coat on the base metal substrate and a top ceramic thermal barrier coating comprising a yttria stabilized zirconia material. The top ceramic thermal barrier coating has a nominal thickness t. The method further comprises removing the thermal barrier coating system, wherein a portion of the base metal substrate also is removed, and determining the thickness of the base metal substrate removed. The portion of the base metal substrate removed has a thickness, Δt. The method also comprises applying a β phase NiAl overlay coating to the substrate, and determining the difference in thickness, Δx, between the β phase NiAl overlay coating and the previously removed bond coat. The method further comprises reapplying the top ceramic thermal barrier coating to a nominal thickness of t+Δt-Δx, wherein Δt compensates for the portion of removed base metal substrate. Advantageously, the coated airfoil contour dimensions of the high pressure turbine blade are restored to about the coated dimensions preceding the engine run.
    • 根据本发明的实施例,公开了一种已经暴露于发动机操作的用于修复涂覆的高压涡轮机叶片以恢复叶片的被覆翼型轮廓尺寸并改进先前的粘结涂层的方法。 该方法包括提供一种发动机运行的高压涡轮叶片,其包括由镍基合金制成的基底金属基底并且具有热障涂层系统。 热障涂层系统包括在基底金属基底上的扩散粘合涂层和包含氧化钇稳定的氧化锆材料的顶部陶瓷热障涂层。 顶部陶瓷热障涂层具有标称厚度t。 该方法还包括去除热障涂层系统,其中基底金属衬底的一部分也被去除,并且确定移除的母体金属衬底的厚度。 去除的贱金属基材的部分厚度为Deltat。 该方法还包括将β相NiAl覆盖涂层施加到基底上,并确定β相NiAl覆盖涂层与先前去除的粘结涂层之间的厚度差异Deltax。 该方法还包括将顶部陶瓷热障涂层重新施加到t + Deltat-Deltax的标称厚度,其中Deltat补偿去除的基底金属基底的部分。 有利地,高压涡轮机叶片的被覆翼型轮廓尺寸恢复到发动机运行之前的涂层尺寸。
    • 17. 发明申请
    • Method for repairing coated components
    • 修复涂层部件的方法
    • US20050106316A1
    • 2005-05-19
    • US10714213
    • 2003-11-13
    • Joseph RigneyChing-Pang LeeRamgopal Darolia
    • Joseph RigneyChing-Pang LeeRamgopal Darolia
    • B23P6/00C23C26/00C23C28/00F01D5/00F01D5/14F01D5/28F01D25/00F02C7/00B32B35/00
    • C23C28/321C23C26/00C23C28/325C23C28/3455F01D5/005F01D5/288F05D2230/80F05D2230/90F05D2300/501Y10T29/49318
    • According to an embodiment of the invention, a method for repairing a coated high pressure turbine blade, which has been exposed to engine operation, to restore coated airfoil contour dimensions of the blade, is disclosed. The method comprises providing an engine run high pressure turbine blade including a base metal substrate made of a nickel-based alloy and having thereon a thermal barrier coating system. The thermal barrier coating system comprises a diffusion bond coat on the base metal substrate and a top ceramic thermal barrier coating comprising a yttria stabilized zirconia material. The top ceramic thermal barrier coating has a nominal thickness t. The method further comprises removing the thermal barrier coating system, wherein a portion of the base metal substrate also is removed, and determining the thickness of the base metal substrate removed. The portion of the base metal substrate removed has a thickness, Δt. The method also comprises reapplying the diffusion bond coat to the substrate, wherein the bond coat is reapplied to a thickness, which is about the same as applied prior to the engine operation; and reapplying the top ceramic thermal barrier coating to a nominal thickness of t+Δt, wherein Δt compensates for the portion of removed base metal substrate. Advantageously, the coated airfoil contour dimensions of the high pressure turbine blade are restored to about the coated dimensions preceding the engine run.
    • 根据本发明的实施例,公开了一种已经暴露于发动机操作的用于修复涂覆的高压涡轮机叶片以恢复叶片的被覆翼型轮廓尺寸的方法。 该方法包括提供一种发动机运行的高压涡轮叶片,其包括由镍基合金制成的基底金属基底并且具有热障涂层系统。 热障涂层系统包括在基底金属基底上的扩散粘合涂层和包含氧化钇稳定的氧化锆材料的顶部陶瓷热障涂层。 顶部陶瓷热障涂层具有标称厚度t。 该方法还包括去除热障涂层系统,其中基底金属衬底的一部分也被去除,并且确定移除的母体金属衬底的厚度。 去除的贱金属基材的部分厚度为Deltat。 该方法还包括将扩散粘合涂层重新施加到基底上,其中粘结涂层重新施加到与发动机操作前相同的厚度; 并将顶部陶瓷热障涂层重新施加到标称厚度t + Deltat,其中Deltat补偿去除的基底金属基底的部分。 有利地,高压涡轮机叶片的被覆翼型轮廓尺寸恢复到发动机运行之前的涂层尺寸。
    • 19. 发明授权
    • Ceramic masking material and application method for protecting turbine airfoil component surfaces during vapor phase aluminiding
    • 陶瓷掩模材料及其在汽相铝化过程中保护涡轮机翼部件表面的应用方法
    • US06884476B2
    • 2005-04-26
    • US10281544
    • 2002-10-28
    • Jeff PfaendtnerJames RuudTed GrossmanPeter MeschterJoseph Rigney
    • Jeff PfaendtnerJames RuudTed GrossmanPeter MeschterJoseph Rigney
    • C23C8/04C23C14/04C23C14/30
    • C23C8/04C23C14/04Y02T50/67
    • A masking material and a method for applying the masking material to preselected surfaces of a component to protect the surfaces to which the masking material is applied from exposure to a vapor phase of aluminum gas while a protective environmental coating is applied to other surfaces of the component. The component, such as found in the hot section of a gas turbine engine, typically has intricate internal passageways. A ceramic material is applied as a mask over preselected surfaces while leaving remaining surfaces of a component exposed. The component typically is a superalloy component, and the exposed surfaces are to be coated with an environmental protective coating. The surfaces are preselected on the basis of whether coating is desired on the surface. The ceramic material forms a continuous, crack-free mask on these preselected surfaces without obstructing the internal passageways. The ceramic material which forms a mask is stable at the elevated temperatures of environmental coating application. The ceramic mask material must be continuous and substantially crack-free to prevent the penetration of the aggressive gas phase of the environmental coating material onto the surface of the component where it would otherwise undesirably be deposited. The ceramic material does not react with either the surface of the superalloy component or the gaseous vapors of the coating composition. At the conclusion of the coating operation, the ceramic coating applied as a mask can be easily and completely removed from the surface of the substrate by simple mechanical means, which surface is free of any coating from the coating operation.
    • 掩模材料和将掩蔽材料施加到部件的预选表面上以将保护掩模材料施加的表面暴露于铝气体的气相的方法,同时将保护性环境涂层施加到部件的其它表面 。 诸如在燃气涡轮发动机的热段中发现的部件通常具有复杂的内部通道。 将陶瓷材料作为掩模施加在预选表面上,同时使元件的剩余表面露出。 组分通常是超合金组分,并且暴露的表面将被涂覆有环境保护涂层。 基于是否需要在表面上涂布来预选表面。 陶瓷材料在这些预选表面上形成连续的,无裂纹的掩模,而不会阻碍内部通道。 形成掩模的陶瓷材料在环境涂料应用的高温下是稳定的。 陶瓷掩模材料必须是连续的且基本无裂纹的,以防止环境涂层材料的腐蚀性气相渗透到组件的表面上,否则其将不希望地沉积。 陶瓷材料不与超合金组分的表面或涂料组合物的气体蒸气反应。 在涂布操作结束时,作为掩模施加的陶瓷涂层可以通过简单的机械装置容易且完全地从基板的表面去除,该表面没有涂层操作的任何涂层。
    • 20. 发明申请
    • Method of selective region vapor phase aluminizing
    • 选择性区域气相镀铝的方法
    • US20050084706A1
    • 2005-04-21
    • US10685637
    • 2003-10-15
    • Nripendra DasJoseph RigneyJeffrey PfaendtnerMatthew Saylor
    • Nripendra DasJoseph RigneyJeffrey PfaendtnerMatthew Saylor
    • C23C10/02C23C10/06C23C10/14B32B15/10
    • C23C10/06C23C10/02C23C10/14Y02T50/67Y10T428/12736
    • The present invention is process for forming diffusion aluminide coatings on an uncoated surface of a substrate, without interdiffusing a sufficient amount of aluminum into a coating layer to adversely affect the coating growth potential and mechanical properties of said coating layer. A metal substrate is provided comprising an external surface and an internal passage therein defined by an internal surface, at least a portion of the external surface of the substrate being coated with a coating layer selected from the group consisting of β-NiAl-base, MCrAlX, a line-of-sight diffusion aluminide, a non-line-of-sight diffusion aluminide, a pack diffusion aluminide, and a slurry diffusion aluminide on said substrate. The external surface of the substrate is cleaned. The metal substrate is subjected to a aluminum vapor phase deposition process performed using a fluorine-containing activator selected from the group consisting of AlF3, CrF3, NH4F, and combinations thereof, at a rate in the range of about 0.036 mols of fluorine per ft3/hr of transport gas to about 0.18 mols of fluorine per ft3/hr of transport gas, at a temperature in the range of about 1350° F. (730° C.) to about 1925° F. (1050° C.), using a transport gas selected from the group consisting of argon, nitrogen, hydrogen, and combinations thereof, the transport gas being provided at a flow rate in the range of about 20 ft3/hr to about 120 ft3/hr for a period of time in the range of about 2 hours to about 10 hours. The substrate is then cooled. The present invention is also a superalloy article coated with a diffusion aluminide layer using the diffusion aluminide coating process of the present invention.
    • 本发明是在基材的未涂覆表面上形成扩散铝化物涂层的方法,而不会将足够量的铝相互扩散到涂层中,从而不利地影响涂层生长电位和所述涂层的机械性能。 提供了一种金属基底,其包括由内表面限定的外表面和内部通道,所述基底的外表面的至少一部分被涂覆有选自β-NiAl基,MCrAlX ,视线扩散铝化物,非视线扩散铝化物,包层扩散铝化物和在所述衬底上的浆料扩散铝化物。 清洁基板的外表面。 对金属基板进行铝蒸气相沉积工艺,该方法使用选自AlF 3 N 3,CrF 3 N,NH 4的含氟活化剂 F和它们的组合,以约0.036摩尔氟/ ft 3 /小时的运输气体至约0.18摩尔氟/ ft 3的范围内的速率, 在约1350°F(730℃)至约1925°F(1050℃)的温度范围内使用选自以下的输送气体: 氩气,氮气,氢气及其组合,输送气体的流速为约20ft 3 / hr至约120ft 3 / hr 一段时间在约2小时至约10小时的范围内。 然后将衬底冷却。 本发明也是使用本发明的扩散铝化物涂覆方法涂覆有扩散铝化物层的超级合金制品。