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Long-life t '-YSZ-based phosphorescent temperature measurement coating material and preparation method of temperature measurement coating

A coating material and long-life technology, applied in the coating, metal material coating process, fusion spraying, etc., can solve the problems of not meeting the requirements of gas turbines, insufficient temperature resistance of coatings, differences, etc., to improve the bearing temperature Temperature measurement ability, strong luminous intensity, long life effect

Pending Publication Date: 2022-05-03
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current co-precipitation and hydrothermal synthesis methods are limited by the Zr 4+ with luminescent elements RE 3+ Huge difference in critical precipitation concentration and Zr 4+ Ionic hydrolysis effect, can not achieve this purpose
In addition, the temperature resistance of the coating prepared by this synthesis method is also obviously insufficient. For example, the YSZ:Dy coating of the co-precipitation method only has a phase transition and microcracks at 1100 ° C, and it is only 1100 ° C before a single shutdown of the turbine engine. The repair time of 500 hours is far away, and it cannot meet the requirements of tens of thousands of hours of gas turbines

Method used

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  • Long-life t '-YSZ-based phosphorescent temperature measurement coating material and preparation method of temperature measurement coating
  • Long-life t '-YSZ-based phosphorescent temperature measurement coating material and preparation method of temperature measurement coating
  • Long-life t '-YSZ-based phosphorescent temperature measurement coating material and preparation method of temperature measurement coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A long-life t′-YSZ-based phosphorescent temperature-measuring coating material, the chemical composition of the temperature-measuring coating material is Zr 0.913 Y 0.037 Eu 0.05 o 1.9565 , (referred to as YSZ:5Eu for short);

[0031] The preparation method of the temperature-measuring coating material is: Zr(NO 3 ) 4 ·3H 2 O, Y (NO 3 ) 3 ·6H 2 O, Eu(NO 3 ) 3 ·6H2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O:Y(NO 3 ) 3 ·6H 2 O:Eu(NO 3 ) 3 ·6H 2 O=0.913:0.037:0.05, weighing, preparation metal ion total energy concentration is the aqueous solution of 0.1mol / L, adds additive citric acid, polyethylene glycol, and its addition is respectively 50 grams / liter, 30 grams / liter, Magnetically stirred for 0.5 hours to obtain a clear and transparent sol, using air with a purity of 99.99% and a pressure of 0.1 MPa as the atomizing medium, atomizing the sol into a corundum crucible at a temperature of 400°C to quickly remove moisture, and obtain the lon...

Embodiment 2

[0051] A long-life t′-YSZ-based phosphorescent temperature-measuring coating material, the chemical composition of the temperature-measuring coating material is Zr 0.913 Y 0.037 Dy 0.05 o 1.9565 , (referred to as YSZ:5Dy);

[0052] The preparation method of the temperature-measuring coating material is: Zr(NO 3 ) 4 ·3H 2 O, Y (NO 3 ) 3 ·6H 2 O, Dy(NO 3 ) 3 ·6H 2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O:Y(NO 3 ) 3 ·6H 2 O:Dy(NO 3 ) 3 ·6H 2 O=0.913:0.037:0.05, weighing, preparation metal ion total energy concentration is the aqueous solution of 0.1mol / L, adds additive citric acid, polyethylene glycol, and its addition is respectively 50 grams / liter, 30 grams / liter, Magnetically stirred for 0.5 hours to obtain a clear and transparent sol, using air with a purity of 99.99% and a pressure of 0.1 MPa as the atomizing medium, atomizing the sol into a corundum crucible at a temperature of 400°C to quickly remove moisture, and obtain the long-life t...

Embodiment 3

[0062] A long-life t′-YSZ-based phosphorescent temperature-measuring coating material, the chemical composition of the temperature-measuring coating material is Zr 0.913 Y 0.057 T m 0.03 o1.9565 (referred to as YSZ:3Tm);

[0063] The preparation method of the temperature-measuring coating material is: Zr(NO 3 ) 4 ·3H 2 O, Y (NO 3 ) 3 ·6H 2 O, Tm (NO 3 ) 3 ·6H 2 O is the raw material, in molar ratio Zr(NO 3 ) 4 ·3H 2 O:Y(NO 3 ) 3 ·6H 2 O:Tm(NO 3 ) 3 ·6H 2 O=0.913:0.057:0.03, weighing, preparation metal ion total energy concentration is the aqueous solution of 0.1mol / L, adds additive citric acid, polyethylene glycol, and its addition is respectively 50 grams / liter, 30 grams / liter, Magnetically stirred for 0.5 hours to obtain a clear and transparent sol. 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 ultra-high temper...

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Abstract

The invention discloses a long-life t '-YSZ-based phosphorescent temperature measurement coating material and a preparation method of a temperature measurement coating, the chemical composition of the temperature measurement coating material is Zr < 0.913 > Y < 0.087-x > RE < x > O < 1.9565 >, x is equal to 0-0.05, and RE is any one of europium Eu, dysprosium Dy, thulium Tm and erbium Er; the long-life t '-YSZ-based phosphorescent temperature measurement coating material is of a pure tetragonal phase structure; the long-life t '-YSZ-based phosphorescent temperature measurement coating is prepared by spraying phosphorescent temperature measurement material powder on a bonding layer through atmospheric plasma, non-diffusible in-situ low-temperature solid solution is realized by adopting a sol-spray pyrolysis synthesis process, and the preparation of zirconium oxide temperature measurement coating material powder with uniform atomic scale and high luminous intensity is realized; and then the t '-YSZ-based phosphorescent temperature measurement coating with long service life is prepared through APS spraying, so that the temperature bearing capacity and the temperature measurement capacity of the temperature measurement coating are improved.

Description

technical field [0001] The invention belongs to the field of phosphorescent temperature-measuring coating materials, and in particular relates to a long-life t′-YSZ-based phosphorescent temperature-measuring coating material and a preparation method of the temperature-measuring coating. Background technique [0002] The service life of hot-end components of aero-engines and gas turbines is highly sensitive to temperature. For example, if the temperature of the blade is 14K higher than the service temperature, its life will be reduced by 50%; Its thermally grown oxide (TGO) growth rate is increased by 3 times, that is, the coating life is shortened by more than 70%, so it is particularly important to accurately test the temperature of the hot end components. [0003] At present, the non-contact temperature measurement technology "Surf Coat Technol 201(2006) 3937–3941" based on the constitutive relationship between the phosphorescence lifetime and temperature emitted by rare e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/129C23C4/134C23C4/11
CPCC23C4/129C23C4/134C23C4/11
Inventor 王欣江阔赖晓萍王杰薛敏
Owner SOUTHWEAT UNIV OF SCI & TECH
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