Preparation method of residual stress sensitive coating modified through graphene

A graphene modification and residual stress technology, applied in coatings, chemical instruments and methods, metal material coating processes, etc., can solve problems such as inability to obtain stress distribution, and achieve the goal of monitoring coating integrity and safe service conditions. Effect

Active Publication Date: 2017-11-24
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultrasonic testing technology is a non-destructive testing method, which has the advantages of strong penetrating power and good sound beam directionality. However, the result of ultrasonic testing stress is the average value of ultrasonic waves passing through a certain pat

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
  • Preparation method of residual stress sensitive coating modified through graphene
  • Preparation method of residual stress sensitive coating modified through graphene
  • Preparation method of residual stress sensitive coating modified through graphene

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1:

[0037] The present invention provides a method for preparing a graphene-modified residual stress sensitive coating, which comprises the following steps: Step (1) Weigh 30g of strontium carbonate (CaCO 3 ), 20g of alumina (Al 2 O 3 ), 10g silicon dioxide (SiO 2 ), weigh 500ml of alcohol, put the mixed powder and alcohol in a planetary ball mill for ball milling and mixing for 70 minutes, until the alcohol is completely volatilized. Then it was transferred to a corundum boat, and the treatment temperature was 940℃ in a high-temperature furnace, and the treatment time was 4 h.

[0038] Step (2) Weigh 1 g of graphene oxide and disperse it in 300 ml of absolute ethanol and ultrasonically shake to prepare a graphene oxide dispersion. The ultrasonic dispersion time is 120 min, and the ultrasonic frequency is 15 Hz.

[0039] Step (3) Weigh 2g europium oxide (Eu 2 O 3 ) And 1g dysprosium oxide (Dy 2 O 3 ), add 300ml of dilute hydrochloric acid to dissolve, and add 300ml o...

Example Embodiment

[0047] Example 2:

[0048] On the basis of the above embodiment, the steps of this embodiment are: step (1) weighing 60g of strontium carbonate (CaCO 3 ), 30g of alumina (Al 2 O 3 ), 20g silicon dioxide (SiO 2 ), weigh 1000ml of alcohol, put the mixed powder and alcohol in a planetary ball mill for ball milling and mixing for 80 minutes, until the alcohol is completely volatilized. Then it was transferred to a corundum boat, and the treatment temperature was 1000℃ in a high-temperature furnace, and the treatment time was 5 h.

[0049] Step (2) Weigh 2g of graphene oxide and disperse it in 600ml of absolute ethanol and sonicate to prepare a graphene oxide dispersion. The ultrasonic dispersion time is 140 min, and the ultrasonic frequency is 15 Hz.

[0050] Step (3) Weigh 4g europium oxide (Eu 2 O 3 ) And 2g dysprosium oxide (Dy 2 O 3 ), add 600ml of dilute hydrochloric acid to dissolve, and add 600ml of distilled water at the same time, the high-speed mixer at a rate of 500rpm / min, s...

Example Embodiment

[0055] Example 3:

[0056] On the basis of the above embodiment, the steps of this embodiment are: Step (1) Weigh 80g of strontium carbonate (CaCO 3 ), 60g of alumina (Al 2 O 3 ), 20g silicon dioxide (SiO 2 ), weigh 1000ml of alcohol, put the mixed powder and alcohol in a planetary ball mill for ball milling and mixing for 90 minutes, until the alcohol is completely volatilized. Then it was transferred to a corundum boat, and the treatment temperature was 1040℃ in a high-temperature furnace and the treatment time was 7 h.

[0057] Step (2) Weigh 4g of graphene oxide and disperse it in 1000ml of absolute ethanol by ultrasonic vibration to prepare a graphene oxide dispersion. The ultrasonic dispersion time is 160 min, and the ultrasonic frequency is 15 Hz.

[0058] Step (3) Weigh 3g europium oxide (Eu 2 O 3 ) And 1.5g dysprosium oxide (Dy 2 O 3 ), add 600ml of dilute hydrochloric acid to dissolve, and add 600ml of distilled water at the same time, the high-speed mixer at a rate of 500...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides a preparation method of a residual stress sensitive coating modified through graphene. The preparation method comprises the steps that (1) strontium carbonate (CaCO3), aluminum oxide (Al2O3), silicon dioxide (SiO2) and alcohol are weighed and mixed; (2) graphene oxide is dispersed in absolute ethyl alcohol; (3) dilute hydrochloric acid is used for dissolution, and meanwhile, a certain amount of distilled water is added; (4) modification and element regulation and control of Dy3+/Eu3+ are achieved through the graphene, and finally /Dy3+/Eu3+ powder modified through the graphene is obtained through drying in the vacuum atmosphere; (5) CaAl2Si2O8:Eu3+, Dy3+ powder which has the powder particle size of about 1-3 [mu]m and modified through the graphene is obtained through screening; and (6) a graphene co-doped Dy3+/Eu3+ WC-CO powder material with a certain particle size is obtained, and a visual SrAl2O4:Eu3+, Dy3+co-doped WC-CO abrasion-resistant coating is prepared through the thermal spraying technique. By the adoption of the scheme, the particle sizes of spraying materials are uniform, the purity is high, the graphene content in the powder is high, and the preparation method can be used for preparing the residual stress sensitive coating through the thermal spraying technique.

Description

technical field [0001] The invention belongs to the preparation of graphene-modified CaAl applied to thermal spraying technology 2 Si 2 o 8 :Eu 3+ , Dy 3+ The technical field of co-doped WC-Co residual stress-sensitive coating, especially relates to a method for preparing a graphene-modified residual stress-sensitive coating. Background technique [0002] The preparation of wear-resistant coatings by thermal spraying is one of the main technologies applied in remanufacturing engineering. It can be used not only to improve the surface wear resistance of new parts, but also to repair the geometric dimensions of failed parts, giving waste parts a new life cycle, It saves energy and material waste caused by manufacturing new products, and has wide application potential in high-tech engineering fields such as aerospace, petrochemical, and nuclear power plants. [0003] Wear-resistant coatings generally serve for a long time under harsh working conditions such as high loads a...

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
IPC IPC(8): C23C4/06C09K11/65C09K11/64
CPCC09K11/65C09K11/7792C23C4/06
Inventor 田浩亮张欢欢王长亮郭孟秋汤智慧崔永静高俊国周子民
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap