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Ultrahigh-temperature long-service-life thermal barrier coating material and preparation method of ultrahigh-temperature long-service-life thermal barrier coating

A thermal barrier coating and long-life technology, applied in coatings, chemical instruments and methods, metal material coating technology, etc., can solve problems such as not being used, achieve long life, high-temperature phase stability, and preparation methods simple effect

Active Publication Date: 2022-05-13
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the only material that can achieve such high toughness is TZP, which is toughened by phase transformation, and its fracture surface energy is as high as 300J / m 2 "J Euro Ceram Soc 28(2008) 1405–1419", but cannot be used due to the phase transition in the range RT~1000℃

Method used

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  • Ultrahigh-temperature long-service-life thermal barrier coating material and preparation method of ultrahigh-temperature long-service-life thermal barrier coating
  • Ultrahigh-temperature long-service-life thermal barrier coating material and preparation method of ultrahigh-temperature long-service-life thermal barrier coating
  • Ultrahigh-temperature long-service-life thermal barrier coating material and preparation method of ultrahigh-temperature long-service-life thermal barrier coating

Examples

Experimental program
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Effect test

Embodiment 1

[0033] An ultra-high temperature and long-life thermal barrier coating material, the chemical composition of the thermal barrier coating material is (Zr 0.84 Ce 0.16 )O 2 , (referred to as 16Ce);

[0034] The preparation method of the thermal barrier coating material is: Zr(NO 3 ) 4 ·3H2 O, Ce(NO 3 ) 3 ·6H 2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O: Ce(NO 3 ) 3 ·6H 2 O=0.84:0.16 Weighing, prepare the aqueous solution whose total energy concentration of metal ions is 0.1mol / L, add additive citric acid, polyethylene glycol, its addition amount is respectively 50 grams / liter, 30 grams / liter, magnetic stirring 0.5 Hour obtains clear and transparent sol;

[0035] Using air with a purity of 99.99% and a pressure of 0.1 MPa as the atomizing medium, the sol was atomized into a corundum crucible at a temperature of 400°C to quickly remove moisture, and the precursor of the ultra-high temperature and long-life thermal barrier coating material was obtained. ...

Embodiment 2

[0037] An ultra-high temperature and long-life thermal barrier coating material, the chemical composition of the thermal barrier coating material is (Zr 0.83 Y 0.01 Ce 0.16 )O 2 , (referred to as 16Ce1Y);

[0038] The preparation method of the thermal barrier coating material is: Zr(NO 3 ) 4 ·3H 2 O, Y (NO 3 ) 3 ·6H 2 O, Ce(NO 3 ) 3 ·6H 2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O: Ce(NO 3 ) 3 ·6H 2 O=0.83:0.01:0.16 Weighing, preparation of an aqueous solution with a total energy concentration of metal ions of 0.1mol / L, adding additives citric acid and polyethylene glycol, the addition amount is 50 g / L and 30 g / L respectively, magnetic Stir for 0.5 hour to obtain a clear and transparent sol;

[0039] Using air with a purity of 99.99% and a pressure of 0.1 MPa as the atomizing medium, the sol was atomized into a corundum crucible at a temperature of 400°C to quickly remove moisture, and the precursor of the ultra-high temperature and long-life t...

Embodiment 3

[0041] An ultra-high temperature and long-life thermal barrier coating material, the chemical composition of the thermal barrier coating material is (Zr 0.82 Y 0.02 Ce 0.16 )O 2 , (referred to as 16Ce1Y);

[0042] The preparation method of the thermal barrier coating material is: Zr(NO 3 ) 4 ·3H 2 O, Y (NO 3 ) 3 ·6H 2 O, Ce(NO 3 ) 3 ·6H 2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O: Ce(NO 3 ) 3 ·6H 2 O=0.82:0.02:0.16 Weighing, preparing an aqueous solution with a total energy concentration of metal ions of 0.1mol / L, adding additives citric acid and polyethylene glycol, the amount of which is 50 g / L and 30 g / L respectively, magnetic Stir for 0.5 hour to obtain a clear and transparent sol;

[0043] Using air with a purity of 99.99% and a pressure of 0.1 MPa as the atomizing medium, the sol was atomized into a corundum crucible at a temperature of 400°C to quickly remove moisture, and the precursor of the ultra-high temperature and long-life therma...

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Abstract

The invention discloses an ultrahigh-temperature thermal barrier coating material with long service life and a preparation method of an ultrahigh-temperature thermal barrier coating with long service life, the chemical composition of the thermal barrier coating material is Zr < 0.84-x > Y < x > Ce < 0.16 > O < 2-0.5 x >, and x is equal to 0-0.02. The thermal barrier coating material has no phase change in a temperature range from room temperature to 1600 DEG C. The fracture toughness of the thermal barrier coating material is 55-690J / m < 2 >. The preparation method of the thermal barrier coating material comprises the following steps: taking Zr (NO3) 4.3 H2O, Y (NO3) 3.6 H2O and Ce (NO3) 3.6 H2O with the purity of 99.99% as raw materials, and then preparing the thermal barrier coating material by adopting a sol-spray pyrolysis method, the ultrahigh-temperature long-service-life thermal barrier coating is prepared in the mode that an ultrahigh-temperature long-service-life thermal barrier coating material is subjected to ball milling to obtain a nano aggregate, and the nano aggregate is sprayed to the bonding layer through the atmospheric plasma spraying technology to form the ceramic layer. The material disclosed by the invention has higher high-temperature phase stability and ultrahigh fracture toughness; the coating prepared from the material has longer service life, and the material is simple in preparation method, high in purity and convenient to apply.

Description

technical field [0001] The invention belongs to the field of thermal barrier coatings, and in particular relates to an ultra-high temperature and long-life thermal barrier coating material and a preparation method of the ultra-high temperature and long-life thermal barrier coating. Background technique [0002] When the inlet temperature of aviation gas turbine engine is increased by 100K, the thrust of the engine is increased by 15%; when the inlet temperature is increased by 200K, the engine is increased by one generation. At present, the most advanced fifth-generation aircraft in the world typically represents F135 engine inlet temperature is close to 2000K, and it is gradually rising. In the future, the sixth-generation aircraft will reach 2400K. Since the current temperature limit of single crystal superalloys can only reach 1373K and the temperature rises slowly (~4K / year), single crystal superalloys alone cannot meet the current temperature and development needs. It i...

Claims

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Application Information

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IPC IPC(8): C23C4/11C23C4/134C01G25/00
CPCC23C4/11C23C4/134C01G25/00C01G25/006C01P2002/72C01P2004/03C01P2006/10Y02T50/60
Inventor 王欣江阔薛敏赖晓萍王杰刘松柏
Owner SOUTHWEAT UNIV OF SCI & TECH
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