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Anti-oxidation coating material resisting to high temperature of 1200 DEG C and preparation method thereof as well as coating preparation method

An anti-oxidation coating, high temperature technology, applied in the field of materials, can solve the problems of oxidation and corrosion of high-temperature components, and achieve the effects of improving high-temperature corrosion resistance, light weight, and improving gas corrosion resistance.

Inactive Publication Date: 2019-11-12
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects in the prior art, the present invention provides an anti-oxidation coating material resistant to high temperature of 1200°C, a preparation method and a coating preparation method. The anti-oxidation coating involved has high temperature resistance above 1200°C, corrosion resistance, high Combining the characteristics of strength and high density, it can solve the problem of oxidation and corrosion of high-temperature components in aviation, aerospace and other fields

Method used

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  • Anti-oxidation coating material resisting to high temperature of 1200 DEG C and preparation method thereof as well as coating preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The first step: according to the molar ratio of 1:16, take Ce(NO 3 )·6H 2 O and absolute ethanol, put them in the same beaker, stir and heat the solution under the water condition of 70°C, and form a colorless and transparent solution A after being completely dissolved. Under the condition of magnetic stirring, add HNO with a concentration of 1.5 mol / L dropwise to solution A 3 , adjust the pH of the solution to about 2.5, and continue to stir the mixed solution for 16 hours under the water condition of 70° C. to form an electrolytic solution for use. Weigh agar powder and NaNO 3 Pour into deionized water, in which agar powder and NaNO 3 The mass ratio of the solution is 12-14. Stir the solution evenly with a glass rod, heat it to 100°C, and keep stirring until it forms a gel, which becomes the standby salt bridge B.

[0026] The second step: use the electrolyte solution and salt bridge in the first step to build a secondary electrolytic cell, use high-purity Pt shee...

Embodiment 2

[0031] The first step: according to the molar ratio of 1:18, take Ce(NO 3 )·6H 2 O and absolute ethanol are placed in the same beaker, and the solution is stirred and heated at 80°C under water conditions, and a colorless and transparent solution A is formed after being completely dissolved. Under the condition of magnetic stirring, add HNO with a concentration of 1.5 mol / L dropwise to solution A 3 , adjust the pH of the solution to about 2.5, and continue to stir the mixed solution for 15 hours under the water condition of 80° C. to form an electrolytic solution for use. Weigh agar powder and NaNO 3 Pour into deionized water, in which agar powder and NaNO 3 The mass ratio of the solution is 13. Stir the solution evenly with a glass rod, heat it to 110°C, and keep stirring until it forms a gel, which becomes the standby salt bridge B.

[0032] The second step: use the electrolyte solution and salt bridge in the first step to build a secondary electrolytic cell, use high-pu...

Embodiment 3

[0037] The first step: according to the molar ratio of 1:19, take Ce(NO 3 )·6H 2 O and absolute ethanol, put them in the same beaker, stir and heat the solution under the water condition of 75°C, and form a colorless and transparent solution after completely dissolving. Add dropwise HNO with a concentration of 2 mol / L to the above solution under the condition of magnetic stirring 3 , adjust the pH of the solution to about 2.3, and continue to stir the mixed solution for 16 hours under the water condition of 80° C. to form an electrolytic solution for use. Weigh agar powder and NaNO 3 Pour into deionized water, in which agar powder and NaNO 3 The mass ratio of the solution is 14. Stir the solution evenly with a glass rod, heat it to 115°C, and keep stirring until it forms a gel and becomes a spare salt bridge.

[0038] The second step: use the electrolyte solution and salt bridge in the first step to build a secondary electrolytic cell, use high-purity Pt sheets as working ...

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Abstract

The invention relates to the technical field of materials, and particularly relates to an anti-oxidation coating material resisting to high temperature of 1200 DEG C and a preparation method thereof as well as a coating preparation method. The anti-oxidation coating is a graphene loaded rare earth oxide modified MCrAlY material. In a current identical system, the limit temperature-resistant temperature of the most advanced hexahydric NiCoCrAlYTa is merely 1050 DEG C, which can have difficulty in meeting using conditions in a working condition. According to the method, graphene is creatively selected to be laded with a rare earth oxide through an electrophoretic deposition technique, and prepared graphene loaded rare earth oxide nano-particles are in mechanical recombination with a MCrAlY material, thus forming a novel uniformly-dispersed coating material; furthermore, a graphene / ReOx-MCrAlY composite coating is prepared through a thermal coating process, so that high-temperature-resistant and corrosion-resistant performance of the coating is improved; and finally, the temperature-resistant temperature of the coating can be increased to 1200 DEG C, and gas-corrosion-resistant performance of the coating can be improved as well.

Description

technical field [0001] The invention relates to the field of material technology, in particular to an anti-oxidation coating material resistant to a high temperature of 1200°C, a preparation method and a coating preparation method. The anti-oxidation coating is a graphene-loaded rare earth oxide modified MCrAlY material. Background technique [0002] In recent years, the application of high-temperature alloy materials in national defense, aerospace and power energy industries has attracted much attention. However, the material is prone to oxidation and failure at high temperatures, which limits its service in more severe high-temperature environments. [0003] MCrAlY coating not only has excellent high temperature oxidation resistance and hot corrosion resistance, but also has good toughness and fatigue resistance. Since the 1970s, it has been more and more widely used as an oxidation protective coating for high-temperature components with high parameters and harsh environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/073C23C4/134C25D13/02C25D13/12
CPCC25D13/02C25D13/12C23C4/073C23C4/134
Inventor 王天颖王长亮郭孟秋汤智慧田浩亮张昂高俊国崔永静周子民
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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