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公开(公告)号：US4744725A
公开(公告)日：1988-05-17
申请号：US624421
申请日：1984-06-25
CPC分类号： F01D11/12 , C23C4/18 , Y10T428/24372 , Y10T428/24893 , Y10T428/24909 , Y10T428/25 , Y10T428/252
摘要： A very thin abrasive material on a substrate is comprised of ceramic particulates contained within a metal matrix. The particulates extend fully through the matrix from the substrate surface to the machined free surface of the abrasive. In a representative 0.38 mm abrasive the particulates are sized normally at 0.42-0.50 mm and have an aspect ratio of less than 1.9 to 1. This enables a high density of particulates, in the range 33-62 per cm.sup.2, while at the same time ensuring good bonding in that most of the particulates are fully surrounded by matrix. When the abrasive is applied to the tip of a superalloy gas turbine engine blade, about 10-50% of the matrix metal is removed after machining. This allows the machined ceramic particulates to project into space and to thus better interact with ceramic abradable seals. In the preferred practice of the invention the particulates are alumina coated silicon carbide contained in a nickel superalloy matrix.
摘要翻译： 基底上非常薄的研磨材料由包含在金属基体内的陶瓷颗粒构成。 颗粒从基体表面完全穿过基体到磨料的自由表面。 在代表性的0.38毫米磨料中，颗粒的大小通常为0.42-0.50毫米，长径比小于1.9比1.这使高密度的颗粒在每平方厘米33-62范围内，而同时 确保良好的粘合，因为大多数颗粒完全被基质包围。 当研磨剂施加到超合金燃气轮机发动机叶片的尖端时，机加工后约10-50％的基体金属被去除。 这使得机加工的陶瓷颗粒投射到空间中，从而更好地与陶瓷耐磨密封件相互作用。 在本发明的优选实践中，颗粒是包含在镍超合金基体中的氧化铝涂覆的碳化硅。
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公开(公告)号：US4610698A
公开(公告)日：1986-09-09
申请号：US624446
申请日：1984-06-25
摘要： A combination of sintering, plasma arc spraying, hot isostatic pressing and chemical milling is used to form an abrasive surface on an article. Alumina coated silicon carbide particulates are clad with nickel and sinter bonded to the surface of a superalloy turbine blade tip. An impermeable layer of plasma arc sprayed superalloy matrix is deposited over the particulates and then has its inherent voids eliminated by hot isostatic pressing. The abrasive material so formed on the surface is then machined to expose the particulates. Next, a portion of the matrix is removed so that the machined particulates project into space and are thus best enabled to interact with abradable ceramic air seals in a gas turbine engine. The ceramic particulates are sized so they are larger than the finished thickness of the abrasive and they have small aspect ratios. Thus, a high density spacing can be achieved while at the same time it is insured that matrix adequately surrounds the particles and holds them in place during use.
摘要翻译： 使用烧结，等离子体电弧喷涂，热等静压和化学研磨的组合来在制品上形成研磨表面。 氧化铝涂覆的碳化硅颗粒用镍包覆并烧结结合到超级合金涡轮叶片尖端的表面。 将不透水层的等离子体电弧喷涂超合金基体沉积在颗粒上，然后通过热等静压将其固有的空隙消除。 然后在表面上形成的研磨材料被加工以暴露颗粒。 接下来，去除矩阵的一部分，使得机加工的微粒投射到空间中，因此最佳地能够与燃气涡轮发动机中的可磨损的陶瓷空气密封件相互作用。 陶瓷颗粒的尺寸使其大于研磨剂的成品厚度，并且它们具有小的纵横比。 因此，可以实现高密度间隔，同时确保基体充分地围绕颗粒并在使用期间将其保持在适当的位置。
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公开(公告)号：US5305726A
公开(公告)日：1994-04-26
申请号：US954450
申请日：1992-09-30
CPC分类号： C23C28/3215 , C23C28/321 , C23C28/324 , C23C28/345 , C23C28/3455 , C23C4/02 , F05C2201/021 , F05C2201/0448 , Y02T50/67
摘要： A ceramic coating for a metal article includes a metallic bond coat deposited on the metal article, at least one MCrAlY/ceramic layer deposited on the bond coat, and a ceramic composite top layer deposited on the MCrAlY/ceramic layer. The M in MCrAlY stands for Fe, Ni, Co, or a mixture of Ni and Co. The ceramic in the MCrAlY/ceramic layer comprises mullite, alumina, zircon, sillimanite, sodium zirconium phosphate, fused silica, cordierite, aluminum titanate, or zirconia. The ceramic composite top layer comprises a ceramic matrix and at least one secondary phase. A method of making the coating includes sequentially depositing a metallic bond coat on the metal article, at least one MCrAlY/ceramic layer on the bond coat, and a ceramic composite top layer on the MCrAlY/ceramic layer.
摘要翻译： 用于金属制品的陶瓷涂层包括沉积在金属制品上的金属粘结涂层，沉积在粘合涂层上的至少一个MCrAlY /陶瓷层和沉积在MCrAlY /陶瓷层上的陶瓷复合顶层。 MCrAlY中的M代表Fe，Ni，Co或Ni和Co的混合物。MCrAlY /陶瓷层中的陶瓷包括莫来石，氧化铝，锆石，硅线石，磷酸锆锆，熔融二氧化硅，堇青石，钛酸铝或 氧化锆 陶瓷复合顶层包括陶瓷基体和至少一个第二相。 制备涂层的方法包括在金属制品上依次沉积金属粘结涂层，在粘合涂层上至少一个MCrAlY /陶瓷层和MCrAlY /陶瓷层上的陶瓷复合顶层。
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4.发明授权Method of applying continuously graded metallic-ceramic layer on metallic substrates 失效在金属基材上施加连续分级金属陶瓷层的方法
公开(公告)号：US4588607A
公开(公告)日：1986-05-13
申请号：US675806
申请日：1984-11-28
CPC分类号： C23C4/02
摘要： Methods of coating metallic substrates with continuously graded metallic-ceramic material are disclosed. The method maintains low stress to strength ratios across the depth of the graded layer when the graded layer is under subsequent operative conditions. In one particular structure, the coating is applied to a metal substrate and includes a metallic bond coat a continuously graded metallic-ceramic layer and an outer layer of abradable ceramic material. Modulation of the metal substrate temperature during the coating process establishes a desired residual stress pattern in the graded layer.
摘要翻译： 公开了用连续梯度金属陶瓷材料涂覆金属基底的方法。 当分级层处于随后的操作条件下时，该方法在渐变层的深度上保持较低的应力与强度比。 在一个特定结构中，将涂层施加到金属基底上，并且包括金属粘合涂层，连续梯度金属陶瓷层和可磨损陶瓷材料的外层。 在涂覆过程中调制金属衬底温度在渐变层中建立了所需的残余应力模式。
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公开(公告)号：US4503130A
公开(公告)日：1985-03-05
申请号：US474117
申请日：1983-03-10
CPC分类号： F01D25/007 , C23C4/02 , C23C4/10 , C23C4/12 , F01D11/122 , F02C7/30 , Y10T428/12021 , Y10T428/12056 , Y10T428/12076 , Y10T428/12083 , Y10T428/12458 , Y10T428/12611 , Y10T428/12618 , Y10T428/12931 , Y10T428/12937 , Y10T428/12944 , Y10T428/12951 , Y10T428/31982
摘要： Structure coated with graded ceramic material and methods of coating application are disclosed. Techniques for maintaining low stress to strength ratios across the depth of the coating are discussed.In one particular structure the coating is applied to a metal substrate (12) and comprises a metallic bond coat (14), a first interlayer (16) of metal/ceramic material, a second interlayer (18) of metal/ceramic material having an increased proportion of ceramic and an all ceramic layer. Modulation of the metal substrate temperature during the coating process establishes a desired residual stress pattern in the part.
摘要翻译： 公开了涂覆有分级陶瓷材料的结构和涂布方法的结构。 讨论了在涂层的深度上保持低应力与强度比的技术。 在一个特定结构中，将涂层施加到金属基底（12）并且包括金属粘合涂层（14），金属/陶瓷材料的第一中间层（16），金属/陶瓷材料的第二中间层（18） 增加陶瓷和全陶瓷层的比例。 在涂覆过程中金属基体温度的调制在部件中建立了所需的残余应力模式。
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公开(公告)号：US4481237A
公开(公告)日：1984-11-06
申请号：US330401
申请日：1981-12-14
IPC分类号： C23C4/06 , C23C4/02 , C23C4/10 , C23C4/12 , C23C28/00 , F01D11/12 , F01D25/00 , F02C7/28 , F02C7/30 , B05D3/02
CPC分类号： F01D25/007 , C23C4/02 , C23C4/10 , C23C4/11 , C23C4/12 , F01D11/122 , F02C7/30 , Y10T428/12458 , Y10T428/12931
摘要： Structure coated with graded ceramic material and methods of coating application are disclosed. Techniques for maintaining low stress to strength ratios across the depth of the coating are discussed. In one particular structure the coating is applied to a metal substrate (12) and comprises a metallic bond coat (14), a first interlayer (16) of metal/ceramic material, a second interlayer (18) of metal/ceramic material having an increased proportion of ceramic and an all ceramic layer. Modulation of the metal substrate temperature during the coating process establishes a desired residual stress pattern in the part.
摘要翻译： 公开了涂覆有分级陶瓷材料的结构和涂布方法的结构。 讨论了在涂层的深度上保持低应力与强度比的技术。 在一个特定结构中，将涂层施加到金属基底（12）并且包括金属粘合涂层（14），金属/陶瓷材料的第一中间层（16），金属/陶瓷材料的第二中间层（18） 增加陶瓷和全陶瓷层的比例。 在涂覆过程中金属基体温度的调制在部件中建立了所需的残余应力模式。
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