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Preparation method of high-temperature-resistant and corrosion-resistant infrared invisible coating

A corrosion-resistant and high-temperature-resistant technology, which is applied in the preparation of coatings and the preparation of high-temperature and corrosion-resistant infrared stealth coatings, can solve the problems of inability to achieve high temperature resistance and impact resistance, and can not meet the needs of aero engines.

Inactive Publication Date: 2011-06-08
LIAONING SILICATE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, the temperature resistance of the above infrared stealth materials is in the middle and low temperature range, which cannot meet the high temperature resistance and impact resistance, and cannot meet the working conditions of aero-engines: that is, high temperature resistance and good structural stability , Strong binding force with the base material, resistant to thermal shock and corrosion of tail jet flow, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 60 parts of strontium lanthanum manganate, 5 parts of aluminum oxide, 10 parts of magnesium oxide and 15 parts of titanium dioxide, after dry modification with 3 parts of glycerin and 2 parts of sodium polymethacrylate, add 10 parts of % potassium silicate water glass, then add 50 parts of deionized water as a dispersion medium, and ball mill and mix for 10 hours to obtain the infrared stealth coating.

[0021] Sand blast the nickel-based alloy plate, spray a layer of adhesive layer containing NiCrAlY on the alloy plate with a thickness of 0.3mm by line spraying method; spray infrared stealth paint on the adhesive layer with a thickness of 0.08mm, and dry it; Overfire in the range of 650-850° C. for 2 hours (the heating rate is 10° C. / min), and an infrared stealth coating with a roughness of 1400 micro feet is obtained.

Embodiment 2

[0023] Weigh 35 parts of strontium lanthanum manganate, 15 parts of aluminum oxide, 10 parts of magnesium oxide and 15 parts of titanium dioxide, after dry modification by 4 parts of glycerin and 1 part of sodium polymethacrylate, add to 20 parts of % potassium silicate water glass, then add 20 parts of deionized water as a dispersion medium, and ball mill and mix for 5 hours to obtain the infrared stealth coating.

[0024] Sand blast the nickel-based alloy plate, spray a layer of adhesive layer containing NiCrAlY on the alloy plate with a thickness of 0.3mm by line spraying method; spray infrared stealth paint on the adhesive layer with a thickness of 0.13mm, and dry it; Overfire in the range of 650-850° C. for 2 hours (the heating rate is 10° C. / min), and an infrared stealth coating with a roughness of 1800 microfeet is obtained.

Embodiment 3

[0026] Weigh 45 parts of strontium lanthanum manganate, 10 parts of aluminum oxide, 10 parts of magnesium oxide and 15 parts of titanium dioxide. % potassium silicate water glass, then add 30 parts of deionized water as a dispersion medium, and ball mill and mix for 8 hours to obtain an infrared stealth coating.

[0027] Sand blast the nickel-based alloy plate, spray a layer of adhesive layer containing NiCrAlY on the alloy plate with a thickness of 0.3mm by line spraying method; spray infrared stealth paint on the adhesive layer with a thickness of 0.08mm, and dry it; Fired in the range of 650-850° C. for 1.4 hours (the heating rate is 10° C. / min), an infrared stealth coating with a roughness of 1100 microfeet was obtained.

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Abstract

The invention relates to a preparation method of a high-temperature-resistant and corrosion-resistant infrared invisible coating, which mainly comprises the following steps of: A. taking 30-60 parts of high-melting point infrared absorbers, 15-25 parts of high-melting point oxides and 10-20 parts of vitrified matter titanium dioxide, adding all the components subjected to dry modification to 5-20 parts of bonding agents by using 3-7 parts of modifiers, then adding to 10-50 parts of deionized water as a dispersion medium, and carrying out ball-milling mixing for 1-12 hours to obtain an infrared invisible coating material; and B. carrying out blast sanding on a nickel base alloy plate, spraying a bonding layer containing NiCrAlY on the alloy plate with a linear spraying method, wherein the thickness of the bonding layer is 0.2-0.3mm; spraying the infrared invisible coating obtained in the step A on the bonding layer, and then airing wherein the thickness of the infrared invisible coating is 0.08-0.13mm; and annealing for 1-2 hours (a temperature rise speed is 10 DEG C / min) at the temperature of 650-850 DEG C to obtain the infrared invisible coating with the roughness of 1100-1800 microfeet.

Description

technical field [0001] The invention relates to a preparation method of a coating, in particular to a preparation method of a high-temperature-resistant and corrosion-resistant infrared stealth coating, which belongs to the field of material science. Background technique [0002] The propagation of infrared radiation in the atmosphere follows the laws of refraction, reflection, absorption, and scattering of visible light, and has the general physical characteristics of light. Its transmission ability in the atmosphere is related to the content of water and carbon dioxide in the atmosphere. When an object emits infrared radiation, the water and carbon dioxide in the atmosphere will absorb the radiation of a certain band and attenuate the infrared radiation signal of this band. The bands that are not absorbed pass through the atmosphere without attenuation, and such bands are called atmospheric windows. The infrared atmospheric window is divided into four, namely near infrare...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D1/04C09D5/00C09D5/32B05D1/38
Inventor 亢永珍韩绍娟许壮志薛健张明张莹莹
Owner LIAONING SILICATE RES INST
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