Nano zirconium oxide based wearable sealing composite coating material and preparation method thereof

A zirconia-based, composite coating technology, applied in coatings, polyester coatings, etc., can solve the problems of unsatisfactory coating bonding strength and air erosion resistance, and achieve smooth coating, high bonding strength, Precisely control the effect of thickness

Inactive Publication Date: 2007-03-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The materials used at this time include Ni-graphite, Al-Si-polyester, NiCrAl-boron nitride, etc. The temperature resistance of these materials can reach up to 800°C, among which boron nitride, graphite, polyester, diatomite, and bentonite As a soft phase, it can play a lubricating role to varying degrees, and the coating has a certain porosity, which is superior to the previously used alloy coatings in terms of heat resistance and thermal shock resistance, but the coating's Bond strength and air erosion resistance are not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take CeO with a particle size of 20-60nm 2 +Y 2 o 3 Stabilized ZrO 2 3.28kg of powder, 0.675kg of h-BN with a particle size of 60-500nm, 0.54kg of polyphenylene with a particle size of 6-10μm, and then add 0.225kg of adhesive, after thorough mixing, add 3.5kg of distilled water and stir to disperse evenly The suspended slurry is ready for use. The CeO 2 +Y 2 o 3 Stabilized ZrO 2 Y in powder 2 o 3 The content of CeO is 5-7mol%. 2 The content is 10~13mol%. The adhesive is any one of dextrin, polyvinyl alcohol, carboxymethyl cellulose, polystyrene or any two or any mixture of two or more, when any two or any two or more are mixed , for any ratio. Use a pH tester to control and adjust the pH value of the slurry by adding dilute hydrochloric acid dropwise, and the pH value is 6-6.5.

[0043] Dry and pure compressed air is used as the carrying gas, the gas pressure is controlled at 0.8MPa, and the slurry is sprayed into the drying tower by a two-flow nozzle. The...

Embodiment 2

[0048] Take Sc with a particle size of 20-60nm 2 o 3 +Y 2 o 3 Stabilized ZrO 2 7.5kg of powder, 1.5kg of h-BN with a particle size of 60-500nm, 1.5kg of polyphenylene with a particle size of 6-10μm, and then add 0.5kg of adhesive, after thorough mixing, add 7.8kg of distilled water to stir and disperse evenly The suspended slurry is ready for use. The Sc 2 o 3 +Y 2 o 3 Stabilized ZrO 2 Y in powder 2 o 3 The content is 5%~7mol%, Sc 2 o 3 The content is 10%~13mol%. The adhesive is any one of dextrin, polyvinyl alcohol, carboxymethyl cellulose, polystyrene or any two or any mixture of two or more, when any two or any two or more are mixed , for any ratio. Use a pH tester to control and adjust the pH value of the slurry by adding dilute hydrochloric acid dropwise, and the pH value is 6-6.5.

[0049] Use dry and pure compressed air as the carrying gas, the gas pressure is controlled at 0.8MPa, and the slurry is sprayed into the drying tower with a two-flow nozzle. T...

Embodiment 3

[0054] Take Sc with a particle size of 20-60nm 2 o 3 +Y 2 o 3 Stabilized ZrO 2 10.5kg of powder, 3.0kg of diatomite with a particle size of 60-500nm, 1.5kg of polyester with a particle size of 6-10μm, and then add 0.75kg of adhesive, after thorough mixing, add 12kg of distilled water and stir to evenly disperse and suspend the The slurry is ready for use. The Sc 2 o 3 +Y 2 o 3 Stabilized ZrO 2 Y in powder 2 o 3 The content of Sc is 5-7mol%. 2 o 3 The content is 10~13mol%. The adhesive is any one of dextrin, polyvinyl alcohol, carboxymethyl cellulose, polystyrene or any two or any mixture of two or more, when any two or any two or more are mixed , for any ratio. Use a pH tester to control and adjust the pH value of the slurry by adding dilute hydrochloric acid dropwise, and the pH value is 6-6.5.

[0055] Use dry and pure compressed air as the carrying gas, the gas pressure is controlled at 0.8MPa, and the slurry is sprayed into the drying tower by a two-flow no...

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Abstract

The invention discloses a nanometer zirconia abrasion sealing composite paint material, which comprises the following parts: base-phase material, filling material A, filling material B, adhesive and water, wherein the base-phase material is 70-75% in the base-phase material, filling material A and filling material B; the filling material A is 14-20% in the base-phase material, filling material A and filling material B; the filling material B is 9-15% in the base-phase material, filling material A and filling material B; the adhesive is 2-5.5% in the base-phase material, filling material A and filling material B; the water is 70-78% in the base-phase material, filling material A, filling material B and adhesive.

Description

technical field [0001] The invention relates to an abradable sealing coating material and a preparation method thereof, in particular to a high-temperature nano zirconia-based abradable sealing composite coating material for plasma spraying and a preparation method of the composite coating material. Background technique [0002] The rapid development of the aviation industry has put forward higher and higher requirements for aero-engines. Large thrust, high work efficiency, and low fuel consumption have become the overall goals of engine design and manufacture. To achieve this goal, the improvement of the engine's own working performance It must become a part of the research work, but judging from the current research results in this area, the effect is not very obvious, because the work of the engine is related to the external conditions, so people began to seek ways to improve the performance of the engine as a whole Through the research, it is found that the use of gas pa...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D165/00C09D167/00C09D129/04C09D103/00C09D125/06
Inventor 程旭东高忠宝顾少轩杨章富张子军邓飞飞
Owner WUHAN UNIV OF TECH
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