Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of ysz/graphene composite sealing coating and preparation method thereof

A graphene composite and sealing coating technology, applied in the coating, metal material coating process, fusion spraying, etc., can solve the problems of YSZ coating failure, high temperature thermal corrosion of coating, YSZ phase change, etc., to achieve Low cost, improved toughness and wear resistance, enhanced thermal stability

Active Publication Date: 2022-03-11
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the operating temperature of the engine has reached above 1200°C, which poses a great challenge to the high-temperature hot corrosion of the coating and the stability of the structure
Yttria partially stabilized zirconia (YSZ) is an ideal high temperature resistant material with high melting point (2953K), low thermal conductivity, high hardness, good elasticity, high toughness, thermal shock resistance, oxidation resistance, corrosion resistance, stable Good performance and other excellent characteristics, but when the temperature exceeds 1200 ° C, YSZ is prone to phase transformation and sintering, resulting in failure of YSZ coating

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of ysz/graphene composite sealing coating and preparation method thereof
  • A kind of ysz/graphene composite sealing coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1. Add 964g of nano-YSZ powder, 36g of graphene, 5g of PVA and 1500g of deionized water into the ball mill tank with a ball-to-material ratio of 4:1, and ball mill for 6 hours at a ball mill speed of 150r / min to mix the ingredients evenly. get a suspension;

[0043] Step 2. Transfer the suspension to a spray drying granulation tower for agglomeration and granulation. The granulated powder is first dried in an oven at 80°C for 30 hours, and then passed through a test sieve to obtain a particle size of 20 μm to 90 μm. Nano YSZ / graphene agglomerated powder;

[0044] Among them, the spray drying granulation process parameters are as follows: inlet temperature 240°C, outlet temperature 130°C, nozzle speed 35Hz, peristaltic pump speed 35rpm;

[0045] Step 3. Send the nano-YSZ / graphene agglomerated powder into the induction plasma spheroidization equipment for spheroidization treatment. The powder after spheroidization treatment is first dried in an oven at 100°C for 30 ...

Embodiment 2

[0055] Step 1. Add 976g of nano-YSZ powder, 24g of graphene, 5g of PVA and 1500g of deionized water into the ball mill tank with a ball-to-material ratio of 4:1, and mill for 3 hours at a ball mill speed of 420r / min to mix the ingredients evenly. get a suspension;

[0056] Step 2. Transfer the suspension to a spray drying granulation tower for agglomeration and granulation. The granulated powder is first dried in an oven at 150°C for 20 hours, and then passed through a test sieve to obtain a particle size of 20 μm to 90 μm. Nano YSZ / graphene agglomerated powder;

[0057] Among them, the spray drying granulation process parameters are as follows: inlet temperature 250°C, outlet temperature 140°C, nozzle speed 40Hz, peristaltic pump speed 35rpm;

[0058] Step 3. Send the nano-YSZ / graphene agglomerated powder into the induction plasma spheroidization equipment for spheroidization treatment. The powder after spheroidization treatment is first dried in an oven at 100°C for 30 hour...

Embodiment 3

[0068] Step 1. Add 988g of nano-YSZ powder, 12g of graphene, 5g of PVA and 1500g of deionized water into the ball mill tank with a ball-to-material ratio of 4:1, and mill for 3 hours at a ball milling speed of 420r / min to mix the ingredients evenly. get a suspension;

[0069] Step 2. Transfer the suspension to a spray drying granulation tower for agglomeration and granulation. The granulated powder is first dried in an oven at 150°C for 20 hours, and then passed through a test sieve to obtain a particle size of 20 μm to 90 μm. Nano YSZ / graphene agglomerated powder;

[0070] Among them, the spray drying granulation process parameters are as follows: inlet temperature 260°C, outlet temperature 150°C, nozzle speed 40Hz, peristaltic pump speed 40rpm;

[0071] Step 3. Send the nano-YSZ / graphene agglomerated powder into the induction plasma spheroidization equipment for spheroidization treatment. The powder after spheroidization treatment is first dried in an oven at 100°C for 30 h...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a YSZ / graphene composite sealing coating and a preparation method thereof, belonging to the technical field of sealing coatings. The sealing coating is a coating with a thickness of not less than 0.1mm prepared on the substrate with YSZ / graphene composite powder as raw material. The sealing coating uses graphene-doped YSZ as raw material, which not only improves It improves the overall toughness and wear resistance of the sealing coating, and can also enhance the thermal stability of the sealing coating to meet the requirements of the sealing coating in high temperature service environments. The sealing coating is prepared by plasma spraying process. By optimizing the process parameters, the YSZ / graphene composite powder can be fully melted and not decomposed during the spraying process, and a high-density coating can be obtained. The process is simple to operate and easy to control. , high production efficiency, low cost and good application prospects.

Description

technical field [0001] The invention relates to a YSZ / graphene composite sealing coating and a preparation method thereof, belonging to the technical field of sealing coatings. Background technique [0002] With the development of aero turbine engines towards high flow ratio, high thrust-to-weight ratio and high inlet temperature, improving engine working efficiency has become a hot topic in aeroengine research. Studies have shown that tip clearance has a significant impact on compressor and turbine efficiency, engine power and fuel consumption. If the gap is too large, it will cause surge; if the gap is too small, there is a risk of dry friction between the moving and static parts in rotation. Sealing coating technology is one of the effective methods commonly used to reduce gaps and buffer dry friction to avoid damage to blades. Therefore, the sealing coating should have good wear resistance, oxidation resistance, good heat resistance, moderate hardness and strong bondin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/00C09D7/61C09D7/65C23C4/134C23C4/02C23C4/10
CPCC09D1/00C09D7/61C09D7/65C23C4/134C23C4/02C23C4/10
Inventor 柳彦博马壮谢明劭徐俊杰刘少璞鲁剑啸
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com