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Beta-(Ni, Pt) Al high-temperature-resistant material and application thereof, and preparation method of beta-(Ni, Pt) Al bonding layer

A bonding layer, high temperature resistant technology, applied in metal material coating process, superimposed layer plating, coating, etc., can solve the problem of reducing the oxidation resistance of the bonding layer

Pending Publication Date: 2022-07-05
北航(四川)西部国际创新港科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Al in the bonding layer of the β-NiAl system will transfer to the substrate after long-term service in a high temperature environment, thereby reducing the Al content in the bonding layer and reducing the oxidation resistance of the bonding layer of the β-NiAl system

Method used

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  • Beta-(Ni, Pt) Al high-temperature-resistant material and application thereof, and preparation method of beta-(Ni, Pt) Al bonding layer
  • Beta-(Ni, Pt) Al high-temperature-resistant material and application thereof, and preparation method of beta-(Ni, Pt) Al bonding layer
  • Beta-(Ni, Pt) Al high-temperature-resistant material and application thereof, and preparation method of beta-(Ni, Pt) Al bonding layer

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preparation example Construction

[0042] The present invention also provides the preparation method of the single-phase β-(Ni,Pt)Al bonding layer described in the above technical solution, comprising the following steps:

[0043] Provide β-γ' duplex nickel-aluminum alloy containing two active elements;

[0044] Prepare a Pt layer on the surface of the substrate;

[0045] preparing a dual-phase β-γ' bonding layer on the surface of the Pt layer by using the β-γ' dual-phase nickel-aluminum alloy containing two active elements;

[0046] Aluminizing treatment is performed on the dual-phase β-γ' bonding layer to obtain a single-phase β-(Ni,Pt)Al bonding layer on the surface of the substrate.

[0047]The present invention provides a β-γ' dual-phase nickel-aluminum alloy containing two active elements. In the present invention, the active elements preferably include two kinds of rare earth elements, Hf, Zr, and Ti, more preferably two kinds of rare earth elements, Hf and Zr; still more preferably dysprosium and Hf. ...

Embodiment 1

[0075] Prepare the substrate:

[0076] The IC21 alloy was cut into cylindrical specimens with a diameter of 16.23 mm and a thickness of 3.67 mm (the surface area of ​​the specimen was 562 mm) by wire cutting. 2 ), a hole with a diameter of 1 mm is opened at both ends of the diameter of the sample, so that the sample can be hung on the support when the coating is prepared;

[0077] Prepare the target:

[0078] The nickel block, aluminum block, hafnium block and dysprosium block were respectively ultrasonically cleaned in acetone and dried for 30min; the dried nickel block, aluminum block, hafnium block and dysprosium block were placed in an arc melting furnace for vacuum smelting (the vacuum degree was 10 -4 Pa), smelting 4 times during the smelting process, wherein the atomic percentage of the aluminum block is 30 at.%, the atomic percentage of the hafnium block is 0.05 at.%, and the atomic percentage of the dysprosium block is 0.05 at.%, The atomic percentage of the nickel...

Embodiment 2

[0090] The single-phase β-(Ni,Pt)Al bonding layer was prepared according to the method of Example 1, except that the matrix was replaced with IC31 alloy, and the dysprosium block in the target preparation step was replaced with a zirconium block.

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Abstract

The invention belongs to the technical field of thermal barrier coatings, and particularly relates to a single-phase beta-(Ni, Pt) Al high-temperature-resistant material, application of the single-phase beta-(Ni, Pt) Al high-temperature-resistant material and a preparation method of a single-phase beta-(Ni, Pt) Al bonding layer. The invention provides a single-phase beta-(Ni, Pt) Al high-temperature-resistant material which comprises the following components in percentage by atom: 30-60 at.% of Al, 0.04-0.2 at.% of active elements, 2-9 at.% of Pt and the balance of Ni, and the active elements comprise two of rare earth elements, Hf, Zr and Ti. According to the high-temperature-resistant material, the activity of aluminum in the high-temperature-resistant material can be reduced through platinum, so that diffusion of the aluminum to a matrix in the service process of the high-temperature-resistant material in a high-temperature environment is inhibited, loss of the aluminum in the high-temperature-resistant material is reduced, degradation of a beta phase to a gamma'phase is avoided, and the high-temperature-resistant material still keeps excellent oxidation resistance after being used for a long time in the high-temperature environment.

Description

technical field [0001] The invention belongs to the technical field of thermal barrier coatings, in particular to a single-phase β-(Ni,Pt)Al high temperature resistant material and application, and a preparation method of a single-phase β-(Ni,Pt)Al bonding layer. Background technique [0002] Thermal barrier coatings are mainly used for the hot end parts of aero-engines, and are generally composed of two parts: a ceramic layer that acts as heat insulation for the alloy parts and a bonding layer that resists high temperature oxidation and corrosion. The bonding layer is located between the metal substrate and the ceramic layer, which improves the thermal expansion difference between the coating and the substrate, relieves the thermal stress of the system, and prevents oxygen from oxidizing the substrate. [0003] β-NiAl is a long-range ordered intermetallic compound that exists in Ni50Al50 alloys. Due to the coexistence of metal bonds and covalent bonds, the melting point Tm...

Claims

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Application Information

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IPC IPC(8): C22C19/03C22C21/00C22C30/00C25D3/50C25D5/50C22F1/10C22F1/04C23C10/08C23C14/32C23C14/16C23C14/30C25D5/12C23C28/02
CPCC22C19/03C22C19/007C22C21/00C22C30/00C25D3/50C25D5/50C22F1/10C22F1/04C23C10/08C23C14/325C23C14/16C23C14/30C25D5/12C23C28/021
Inventor 张恒张皓博刘原宫声凯
Owner 北航(四川)西部国际创新港科技有限公司