A high temperature oxidation resistant thermal barrier coating with composite structure and its preparation method

A high-temperature oxidation-resistant, composite structure technology, applied in chemical instruments and methods, coatings, metal material coating processes, etc., can solve the problems of high-temperature oxidation-resistant thermal barrier coatings with good repeatability, and achieve high-temperature oxidation resistance Excellent, repeatable, simple process results

Active Publication Date: 2018-08-03
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, up to now, no composite high-temperature oxidation-resistant thermal barrier coating has been found that has a simple preparation process, good repeatability, easy operation, and multi-layer superimposed equiaxed crystal / columnar crystal structure.

Method used

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  • A high temperature oxidation resistant thermal barrier coating with composite structure and its preparation method
  • A high temperature oxidation resistant thermal barrier coating with composite structure and its preparation method
  • A high temperature oxidation resistant thermal barrier coating with composite structure and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0033] like figure 1 As shown, the high temperature oxidation resistant thermal barrier coating with a composite structure in this embodiment is deposited on the top of the superalloy substrate 1, and the coating includes a metal bonding layer 2, a first ceramic layer 3, and a second ceramic layer deposited sequentially from bottom to top. Two ceramic layers 4, a metal deposition layer 5, a third ceramic layer 6 and a fourth ceramic layer 7, the first ceramic layer 3 and the third ceramic layer 6 are equiaxed crystal structures, the second ceramic layer 4 and The fourth ceramic layer 7 is a columnar crystal structure; the composition of the first ceramic layer 3, the second ceramic layer 4, the third ceramic layer 6 and the fourth ceramic layer 7 is 6wt% ~ 8wt% Y 2 o 3 Stable ZrO 2, the composition of the metal bonding layer 2 is MCrAlY, the composition of the metal deposition layer 5 is MCrAlY, and M is Ni or / and Co.

[0034] In this embodiment, M is Ni; the thickness of t...

Embodiment 2

[0045] like figure 1 As shown, the high temperature oxidation resistant thermal barrier coating with a composite structure in this embodiment is deposited on the top of the superalloy substrate 1, and the coating includes a metal bonding layer 2, a first ceramic layer 3, and a second ceramic layer deposited sequentially from bottom to top. Two ceramic layers 4, a metal deposition layer 5, a third ceramic layer 6 and a fourth ceramic layer 7, the first ceramic layer 3 and the third ceramic layer 6 are equiaxed crystal structures, the second ceramic layer 4 and The fourth ceramic layer 7 is a columnar crystal structure; the composition of the first ceramic layer 3, the second ceramic layer 4, the third ceramic layer 6 and the fourth ceramic layer 7 is 6wt% ~ 8wt% Y 2 o 3 Stable ZrO 2 , the composition of the metal bonding layer 2 is MCrAlY, the composition of the metal deposition layer 5 is MCrAlY, and M is Ni or / and Co.

[0046] In this embodiment, M is Ni and Co; the thickn...

Embodiment 3

[0056] like figure 1 As shown, the high temperature oxidation resistant thermal barrier coating with a composite structure in this embodiment is deposited on the top of the superalloy substrate 1, and the coating includes a metal bonding layer 2, a first ceramic layer 3, and a second ceramic layer deposited sequentially from bottom to top. Two ceramic layers 4, a metal deposition layer 5, a third ceramic layer 6 and a fourth ceramic layer 7, the first ceramic layer 3 and the third ceramic layer 6 are equiaxed crystal structures, the second ceramic layer 4 and The fourth ceramic layer 7 is a columnar crystal structure; the composition of the first ceramic layer 3, the second ceramic layer 4, the third ceramic layer 6 and the fourth ceramic layer 7 is 6wt% ~ 8wt% Y 2 o 3 Stable ZrO 2 , the composition of the metal bonding layer 2 is MCrAlY, the composition of the metal deposition layer 5 is MCrAlY, and M is Ni or / and Co.

[0057]In this embodiment, M is Co; the thickness of t...

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Abstract

The invention provides a high temperature oxidation-resistant thermal barrier coating layer with a composite structure. The high temperature oxidation-resistant thermal barrier coating layer comprises a metal bonding layer, a first ceramic layer, a second ceramic layer, a metal deposition layer, a third ceramic layer and a fourth ceramic layer deposited at the top of a high-temperature alloy basal body in sequence; the first ceramic layer and the third ceramic layer are both isometric crystal structures; the second ceramic layer and the fourth ceramic layer are both columnar crystal structures; components of the ceramic layers are ZrO2 with stable Y2O3; components of the metal bonding layer are MCrAlY; and components of the metal deposition layer are MCrAlY or NiAl, wherein M is Ni or / and Co. The invention further provides a method for preparing the high temperature oxidation-resistant thermal barrier coating layer. The high temperature oxidation-resistant thermal barrier coating layer has multiple layers of laminated isometric crystal and columnar crystal structures, and is excellent in oxygen resistance and thermal shock resistance; and the preparation method is simple in process, excellent in repeatability and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of high-temperature coating protection, and in particular relates to a high-temperature oxidation-resistant thermal barrier coating with a composite structure and a preparation method thereof. Background technique [0002] Thermal barrier coating is a kind of high temperature resistance, low thermal conductivity and high thermal expansion coefficient of ceramics, which is combined with a superalloy matrix with a metal bonding layer on the surface in the form of a coating to reduce the surface temperature of the superalloy, The surface protection technology to improve its service life has been widely used in aviation, aerospace, sea ships, large thermal power generation and automobile power. In actual use, the service environment of thermal barrier coatings is extremely harsh. It not only has strong high-temperature oxidation and high-temperature corrosion, but also withstands frequent cold and heat cycle sho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/04C23C14/30C23C14/16C23C14/08
CPCC23C14/083C23C14/16C23C14/30
Inventor 武清李争显刘林涛杜继红王彦峰刘磊胡祯李江涛
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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