Components including nickel-based single crystal superalloy substrates and methods of manufacturing the same
A technology of nickel-based single crystal and superalloy, which is applied to components including nickel-based single crystal superalloy substrates, and in the field of manufacturing components including nickel-based single crystal superalloy substrates, which can solve the problems of reducing the thermal fatigue strength of components and achieve service life prolonged effect
Active Publication Date: 2021-01-05
SAFRAN
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- Description
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- Application Information
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Problems solved by technology
[0014] However, the use of this diffusion barrier reduces the thermal fatigue strength of the part given the difference in thermal expansion coefficient between the diffusion barrier, the base layer B and the substrate A
Method used
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Embodiment Construction
[0051] A method of manufacturing a part according to the present invention will now be described.
[0052] according to Figure 5 A first embodiment of the invention is shown, the finished part denoted by reference numeral 1 comprising a substrate 2 covered with a multilayer coating 3 , itself covered with a layer 4 of aluminum oxide.
[0053] according to Figure 5 In the second embodiment of the invention shown, the aluminum oxide layer 4 is covered with a heat insulating layer 5 . The finished part is indicated by reference numeral 1'.
[0054] The substrate 2 is made of a nickel-based single crystal superalloy.
[0055] The base plate is obtained, for example, by casting or additive manufacturing and has the desired final shape, for example that of a turbine blade.
[0056] Merely as an illustrative example, the superalloys used to fabricate the substrate 2 are shown in Table 1 below. These superalloys are identified by the letters A to F. Other nickel-based single c...
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Abstract
The invention relates to a method for manufacturing a component (1) comprising a nickel-based single crystal superalloy substrate (2). The method is characterized in that it comprises the steps of: manufacturing a nickel-based single crystal superalloy substrate (2); forming a coating (3) on said substrate (2), the coating comprising at least one first type containing aluminum and platinum layer (30), at least one second type layer (31) containing aluminum, silicon, platinum and a third type layer (32) containing nickel, aluminum, silicon and platinum, said third type layer ( 32) On the outermost layer of the coating (3) in the stack; and, on said third type of layer (32), a silicon-doped aluminum oxide layer (4) is formed.
Description
technical field [0001] The invention belongs to the field of nickel-based single crystal superalloy. [0002] More particularly, the present invention relates to methods for fabricating components comprising nickel-based single crystal superalloy substrates, and components comprising nickel-based single crystal superalloy substrates. Background technique [0003] The term "superalloy" refers to a composite alloy that exhibits very good resistance to oxidation, corrosion, creep and cyclic stress (especially mechanical or thermal stress) at high temperature and pressure. A specific application of these superalloys is in the manufacture of aerospace components, such as turbine blades. [0004] It is known in the prior art that from the inside to the outside, the components sequentially include: a nickel-based single crystal superalloy substrate, one or more bottom layers and a thermal insulation layer. [0005] in the attached figure 1 A schematic cross-sectional view of an ...
Claims
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IPC IPC(8): C23C28/00C23C14/16C23C14/34C23C10/28
CPCC23C10/28C23C28/321C23C28/3455C23C28/42C23C14/165C23C14/3407C23C28/021B32B15/04B32B2250/04B32B2250/05B32B2255/06B32B2255/205B32B2307/306C23C14/081C23C14/34Y02T50/60
Inventor 艾玛尔·撒伯恩德吉维尔日妮·杰凯特杰瑞米·雷姆
Owner SAFRAN