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A strong chemical adsorption interface thermal barrier coating bonding layer material and its preparation method

A chemical adsorption and thermal barrier coating technology, applied in the coating, metal material coating process, etc., can solve the problems of thermal barrier coating failure, ceramic layer shedding, and reduce the thermal service performance of the thermal barrier coating system, to achieve Enhance thermal service performance and solve the effect of failure

Active Publication Date: 2021-05-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in high temperature environment, continuous Al is formed by Ni-Al base and MCrAlY base 2 o 3 layer, which grows and thickens continuously during continuous thermal service, which will eventually lead to the Al 2 o 3 The layer-bonded ceramic layer falls off, which leads to the failure of the thermal barrier coating and reduces the thermal service performance of the thermal barrier coating system

Method used

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  • A strong chemical adsorption interface thermal barrier coating bonding layer material and its preparation method
  • A strong chemical adsorption interface thermal barrier coating bonding layer material and its preparation method
  • A strong chemical adsorption interface thermal barrier coating bonding layer material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This embodiment provides a strong chemical adsorption interface thermal barrier coating bonding layer material, and a method for preparing a thermal barrier coating system using heat-resistant stainless steel 310S as the metal substrate to be protected, wherein the heat-resistant stainless steel 310S is austenitic Body stainless steel has good oxidation resistance and corrosion resistance. Because of the high percentage of chromium and nickel, it has good creep strength, can work continuously at high temperature, and has good high temperature resistance.

[0043] Such as image 3 As shown, the specific preparation steps are as follows:

[0044] S101: Mix the powder material mixed with Ni and Ti evenly according to the mass ratio x, and smelt it into a dense fast material in a vacuum device.

[0045] During specific implementation, the powder material mixed with Ni and Ti is uniformly mixed according to the mass ratio of 9:1, and smelted into a dense fast material in a ...

Embodiment 2

[0060] This embodiment provides a strong chemical adsorption interface thermal barrier coating bonding layer material, and a method for preparing a thermal barrier coating system with the superalloy K456 as the metal substrate to be protected, wherein the nickel-based superalloy K465 alloy has a relatively high High creep resistance, fatigue ability and high temperature bearing capacity.

[0061] The specific preparation steps for preparing the thermal barrier coating system are as follows:

[0062] The preparation methods of S101 and S102 are similar to those in Example 1, and will not be described in detail in this example. The difference is that the powder materials mixed with Ni and Ti are uniformly mixed at a mass ratio of 5:5.

[0063] S103: Coating the powder prepared in S102 on the superalloy substrate to prepare a bonding layer, the thickness of the bonding layer is 1-1000 microns.

[0064] During specific implementation, the prepared superalloy substrate material su...

Embodiment 3

[0072] This embodiment provides a strong chemical adsorption interface thermal barrier coating bonding layer material, and a method for preparing a thermal barrier coating system using heat-resistant stainless steel 310S as the metal substrate to be protected, wherein the heat-resistant stainless steel 310S is austenitic Body stainless steel has good oxidation resistance and corrosion resistance. Because of the high percentage of chromium and nickel, it has good creep strength, can work continuously at high temperature, and has good high temperature resistance.

[0073] The specific preparation steps for preparing the thermal barrier coating system are as follows:

[0074] The preparation method of S101 and S102 is similar to that of any one of Examples 1-2, and will not be repeated in this example. The difference is that the powder material mixed with Ni and Ti is 3:7 in mass ratio. The proportions are mixed evenly.

[0075] S103: Coating the powder prepared in S102 on the s...

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Abstract

The invention provides a bonding layer material of a strong chemical adsorption interface thermal barrier coating and a preparation method thereof. The bonding layer material is Ni(1-x)Ti(x) or Ni(1-x)Ti(x)-(y)RE, wherein the RE is rare earth elements Ce, Dy, Eu, La, Any one of Nd and Y; the x represents the mass ratio, and the value is 10%≤x≤90%; the y represents the mass ratio, and the value is 0%≤y≤10%. Since an interface reaction layer is formed between the bonding layer and the ceramic layer provided by the present application, a strong chemical bond adsorption interface is generated, and the metal substrate can be efficiently protected. It greatly enhances the thermal service performance of the entire thermal barrier coating system and is applied to ultra-high temperature thermal barrier coating systems.

Description

technical field [0001] The invention relates to the fields of chemical industry and materials, and mainly relates to a high-performance strong chemical adsorption interface thermal barrier coating bonding layer material and a preparation method thereof. Background technique [0002] Alloys are widely used in gas turbines, thermal power generation and atomic energy industries due to their excellent high-temperature mechanical properties, oxidation resistance and corrosion resistance. However, with the development of aviation, aerospace engine and gas turbine technology, the heat resistance of the alloy is no longer suitable for use in high temperature environments. As a thermal insulation functional coating, the thermal barrier coating material is coated on the surface of the alloy material to enhance the high thermal service performance of the coating material in the high temperature working environment. Therefore, the service performance of the alloy can be increased by co...

Claims

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Application Information

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IPC IPC(8): C23C30/00B22F9/08C22C14/00C22C19/03
CPCB22F9/082C22C14/00C22C19/03C23C30/00
Inventor 刘森辉徐庆龙李长久李成新
Owner XI AN JIAOTONG UNIV
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