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A laser-induced high-temperature solid-state reaction to generate a 2 b 2 o 7 Type Thermal Barrier Coating Material Method

A2B2O7, high-temperature solid-state reaction technology, applied in the direction of heating inorganic powder coating, etc., can solve the problems of limited thermal barrier coating materials, low safety performance, long high-temperature reaction time, etc., and achieve good high-temperature chemical stability and production The effect of high efficiency and low production cost

Active Publication Date: 2021-08-27
GUANGDONG ROI OPTOELECTRONICS TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solid phase synthesis of A 2 B 2 o 7 Type ceramic materials have high reaction temperature, long reaction time at high temperature, and great requirements on equipment energy consumption; the sol method has a cumbersome process, high raw material requirements and will produce organic pollution; hydrothermal method has high equipment requirements, high technical difficulty, and low safety performance, etc.
Due to the above problems, A 2 B 2 o 7 The preparation of type thermal barrier coating materials is greatly restricted, and it is still not solved in the prior art

Method used

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  • A laser-induced high-temperature solid-state reaction to generate a <sub>2</sub> b <sub>2</sub> o <sub>7</sub> Type Thermal Barrier Coating Material Method
  • A laser-induced high-temperature solid-state reaction to generate a <sub>2</sub> b <sub>2</sub> o <sub>7</sub> Type Thermal Barrier Coating Material Method
  • A laser-induced high-temperature solid-state reaction to generate a <sub>2</sub> b <sub>2</sub> o <sub>7</sub> Type Thermal Barrier Coating Material Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 1-3 As shown, a laser-induced high-temperature solid-state reaction to generate Yb 2 Zr 2 o 7 A method for a type thermal barrier coating material, comprising the steps of:

[0041] (1), get the Yb that purity is 99.9% 2 o 3 and ZrO with a purity of 99.9% 2 , whose molar ratio Yb 2 o 3 : ZrO 2 1:2, ball milled for 2 hours under the condition of ball-to-material ratio of 5:1 and rotating speed of 300r / s to obtain mixed powder;

[0042] (II), the mixed powder of step (I) is evenly distributed on the surface of the substrate, the substrate is a copper metal plate, the mixed powder is evenly distributed, the surface is smooth, and the thickness of the mixed powder is 0.5mm;

[0043] (III), irradiating the laser light on the surface of the substrate in step (II), under the action of continuous laser light with a wavelength of 980nm, the optical power density of the control laser light is 500W / cm 2 , the duration of the laser action is 5s, and the hi...

Embodiment 2

[0045] Such as Figure 1-3 As shown, a laser-induced high-temperature solid-state reaction to generate Yb 2 Zr 2 o 7 -Y 2 Zr 2 o 7A method for a type composite thermal barrier coating material, comprising the steps of:

[0046] (1), get the Yb that purity is 99.9% 2 o 3 , Y with a purity of 99.9% 2 o 3 and ZrO with a purity of 99.9% 2 , whose molar ratio Yb 2 o 3 : Y 2 o 3 : ZrO 2 0.5:0.5:2, ball milling for 2 hours at a ball-to-material ratio of 5:1 and a rotational speed of 300r / s to obtain a mixed powder;

[0047] (II), the mixed powder of step (I) is evenly distributed on the surface of the substrate, the substrate is a copper metal plate, the mixed powder is evenly distributed, the surface is smooth, and the thickness of the mixed powder is 0.5mm;

[0048] (III), irradiating the laser light on the surface of the substrate in step (II), under the action of continuous laser light with a wavelength of 980nm, the optical power density of the control laser ligh...

Embodiment 3

[0050] Such as Figure 1-3 As shown, a laser-induced high-temperature solid-state reaction to generate Gd 2 Zr 2 o 7 A method for a type thermal barrier coating material, comprising the steps of:

[0051] (1), get the Gd that purity is 99.9% 2 o 3 and ZrO with a purity of 99.9% 2 , whose molar ratio Gd 2 o 3 : ZrO 2 1:2, ball milling for 2 hours at a ball-to-material ratio of 5:1 and a rotational speed of 300r / s to obtain a mixed powder;

[0052] (II), the mixed powder of step (I) is evenly distributed on the surface of the substrate, the substrate is a copper metal plate, the mixed powder is evenly distributed, the surface is smooth, and the thickness of the mixed powder is 0.5mm;

[0053] (III), laser irradiation on the surface of the substrate of step (II), under the action of continuous laser light with a wavelength of 980nm, the optical power density of the control laser is 400W / cm 2 , the laser scans the surface of the matrix in a "bow" shape at a scanning spee...

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Abstract

The invention relates to the technical field of thermal barrier coating materials, in particular to a laser-induced high-temperature solid-phase reaction to generate A 2 B 2 o 7 The method for type thermal barrier coating material comprises the steps: (1), getting oxide AO x and oxide BO y Mix uniformly to obtain mixed powder; (II), uniformly distribute the mixed powder of step (I) on the surface of the matrix; (III), irradiate the laser on the surface of the matrix of step (II), and induce the described The mixed powder undergoes a high-temperature solid-state reaction to obtain A 2 B 2 o 7 and grow on the surface of the substrate to generate A 2 B 2 o 7 Type thermal barrier coating material; wherein, the element A is a rare earth element, and the element B is at least one of Ti, Zr and Hf; 0.5≤x≤2, y=2. The preparation method is simple in operation, convenient in control, high in production efficiency, low in production cost, less in pollution and short in production cycle, and can be used in large-scale production.

Description

technical field [0001] The invention relates to the technical field of thermal barrier coating materials, in particular to a laser-induced high-temperature solid-phase reaction to generate A 2 B 2 o 7 Type thermal barrier coating material method. Background technique [0002] Thermal barrier coatings have been widely used in the field of aero-engines because they can effectively protect key hot-end components such as aero-engine blades. Thermal barrier coating materials are required to have the characteristics of high melting point, low thermal conductivity, relatively high thermal expansion coefficient, high temperature phase stability, and low sintering shrinkage. The ceramic material used in active thermal barrier coatings is yttria partially stabilized zirconia (Y 2 o 3 stablized partiallyzirconia, referred to as YSZ), due to its own phase transition and serious high-temperature sintering, it is difficult to meet the needs of further development of thermal barrier c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/50C04B35/48C23C24/08
Inventor 曾和平贺嘉杨
Owner GUANGDONG ROI OPTOELECTRONICS TECH CO LTD
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