A kind of preparation method of graphene modified visible wear-resistant coating

A graphene modified and wear-resistant coating technology, which is applied in coating, metal material coating process, fusion spraying, etc., can solve the problems of unintuitive testing process, high requirements, high cost of testing equipment, etc., and achieve the goal of monitoring coating Layer Integrity and Effects of Safe Service Status

A graphene modified and wear-resistant coating technology, which is applied in coating, metal material coating process, fusion spraying, etc., can solve the problems of unintuitive testing process, high requirements, high cost of testing equipment, etc., and achieve the goal of monitoring coating Layer Integrity and Effects of Safe Service Status

CN107354419BActive Publication Date: 2020-03-17AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • A kind of preparation method of graphene modified visible wear-resistant coating
  • A kind of preparation method of graphene modified visible wear-resistant coating
  • A kind of preparation method of graphene modified visible wear-resistant coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] On the basis of the foregoing embodiments, a method for preparing a graphene-modified visible wear-resistant coating provided in this embodiment comprises the following steps:

[0036] Step (1) Weigh 20g of strontium carbonate (SrCO 3 ), 10g of alumina (Al 2 o 3 ), weigh 300ml of alcohol, and place the mixed powder and alcohol in a planetary ball mill for ball milling and mixing for 60 minutes until the alcohol is completely volatilized. Then it was transferred to a corundum boat and treated in a high-temperature furnace at a temperature of 900 °C for 4 h.

[0037] Step (2) Weigh 1 g of graphene oxide and disperse it in 100 ml of absolute ethanol with ultrasonic vibration to prepare a graphene oxide dispersion. The ultrasonic dispersion time is 120min, and the ultrasonic frequency is 15Hz.

[0038] Step (3) weigh 2g europium oxide (Eu 2 o 3 ) and 2g dysprosium oxide (Dy 2 o 3 ), add 300ml of dilute hydrochloric acid to dissolve, and add 300ml of distilled water ...

Embodiment 2

[0047] On the basis of the foregoing embodiments, a method for preparing a graphene-modified visible wear-resistant coating provided in this embodiment comprises the following steps:

[0048] Step (1) Weigh 30g of strontium carbonate (SrCO 3 ), 15g of alumina (Al 2 o 3 ), weigh 500ml of alcohol, and place 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 treated in a high-temperature furnace at a temperature of 1000 °C for 5 h.

[0049] Step (2) Weigh 2 g of graphene oxide and disperse it in 200 ml of absolute ethanol with ultrasonic vibration to prepare a graphene oxide dispersion. The ultrasonic dispersion time is 120min, and the ultrasonic frequency is 15Hz.

[0050] Step (3) weigh 3g europium oxide (Eu 2 o 3 ) and 1.5g dysprosium oxide (Dy 2 o 3 ), add 500ml of dilute hydrochloric acid to dissolve, and add 500ml of distilled wat...

Embodiment 3

[0056] On the basis of the foregoing embodiments, a method for preparing a graphene-modified visible wear-resistant coating provided in this embodiment comprises the following steps:

[0057] Step (1) Weigh 60g of strontium carbonate (SrCO 3 ), 40g of alumina (Al 2 o 3 ), weigh 600ml of alcohol, and place 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 treated in a high-temperature furnace at a temperature of 1000 °C for 6 h.

[0058] Step (2) Weigh 1 g of graphene oxide and disperse it in 100 ml of absolute ethanol with ultrasonic vibration to prepare a graphene oxide dispersion. The ultrasonic dispersion time is 120min, and the ultrasonic frequency is 15Hz.

[0059] Step (3) weigh 3g europium oxide (Eu 2 o 3 ) and 2g dysprosium oxide (Dy 2 o 3 ), add 300ml of dilute hydrochloric acid to dissolve, and add 300ml of distilled water...

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Abstract

The invention provides preparation method for a graphene-modified visible abrasion-resistant coating. The method comprises the steps that firstly, a certain amount of strontium carbonate (SrCO3), aluminum oxide (Al2O3) and a certain amount of ethyl alcohol are weighed and mixed; secondly, a certain amount of graphene oxide is weighed and dispersed in absolute ethyl alcohol to be subjected to ultrasonic concussion; thirdly, europium oxide (Eu2O3) and dysprosium oxide (Dy2O3) are dissolved with diluted hydrochloric acid; fourthly, modification and composition regulation of Dy3+ / Eu3+ are achieved through graphene; fifthly, graphene-modified SrAl2O4:Eu3+, Dy3+ powder with the powder particle size being 1-3 microns is obtained through screening; and sixthly, a graphene codoped Dy3+ / Eu3+ WC-Co powder material with a certain grain is obtained, and the graphene-modified SrAl2O4:Eu3+, Dy3+ codoped WC-Co visible abrasion-resistant coating is prepared through a thermal spraying technology. By adopting the technical scheme, the spray material is even in grain and high in purity, the graphene content in powder is high, and the visual abrasion-resistant coating can be prepared through the thermal spraying technology.

Description

technical field [0001] The invention belongs to the preparation of graphene-modified SrAl by thermal spraying technology 2 o 4 :Eu 3+ , Dy 3+ The technical field of co-doped WC-Co visible wear-resistant coating, especially relates to a preparation method of graphene-modified visible wear-resistant 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] So far, the surface coating of remanufactured parts generally has obvious failures only when the coating has large-scale pitting...

Claims

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Application Information

Patent Timeline
17 Mar 2020
Publication
CN107354419B
IPC
C23C4/06; C23C4/129
CPC
C23C4/06
Inventors
田浩亮; 周子民