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Preparation method of nanoparticle containing gradient wear-resistant coating

A technology of wear-resistant coatings and nanoparticles, applied in the field of material processing, to achieve the effect of improving interface bonding performance

Active Publication Date: 2019-06-18
吉林大贺铁路机车配件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a gradient wear-resistant coating containing nanoparticles and its preparation method to solve the problems in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0055] A method for preparing a gradient wear-resistant coating containing nanoparticles, the specific preparation process is:

[0056] (1) In parts by weight, take 20 parts of nano-aluminum powder, 30 parts of dopamine solution, 2 parts of sodium fluoride, 8 parts of ferric nitrate solution, 5 parts of ethyl orthosilicate and 5 parts of potassium permanganate, and Nano aluminum powder, mass concentration is 2.6mL / min dopamine solution and sodium fluoride are placed in No. 1 ball mill and mixed ball mill for 60min, then add glacial acetic acid to adjust pH to 4.6 in No. 1 ball mill, then add mass fraction in No. 1 ball mill 20% ferric nitrate solution, ball milled and mixed for 60 minutes, then added ammonia water with a mass fraction of 30% to the No. Ball milling and mixing for 60 minutes, then adding potassium permanganate, and continuing ball milling and mixing for 60 minutes to obtain a modified bottom layer;

[0057] (2) In parts by weight, take 60 parts of nano-alumina...

example 2

[0071] (1) In parts by weight, take 20 parts of nano-aluminum powder, 2 parts of sodium fluoride, 8 parts of ferric nitrate solution, 5 parts of tetraethyl orthosilicate and 5 parts of potassium permanganate, and mix nano-aluminum powder and fluorine NaCl was placed in No. 1 ball mill and mixed for 60 minutes, then glacial acetic acid was added to adjust the pH to 4.6 in No. 1 ball mill, and then ferric nitrate solution with a mass fraction of 20% was added into No. Add ammonia water with a mass fraction of 30% to the No. 1 ball mill to adjust the pH to 8.3, then dropwise add orthosilicate ethyl silicate to the No. 1 ball mill with a rubber dropper, and ball mill for 60 minutes, then add potassium permanganate, and continue ball milling for 60 minutes , to obtain a modified base material;

[0072] (2) In parts by weight, take 60 parts of nano-alumina, 5 parts of cryolite, 3 parts of activated carbon, 3 parts of copper, and 0.3 parts of rare earth, and place nano-alumina, cryol...

example 3

[0086] A method for preparing a gradient wear-resistant coating containing nanoparticles, the specific preparation process is:

[0087] (1) In parts by weight, take 20 parts of nano-aluminum powder, 30 parts of dopamine solution, 8 parts of ferric nitrate solution, 5 parts of tetraethyl orthosilicate and 5 parts of potassium permanganate, and mix the nano-aluminum powder and the mass concentration Put the 2.6mL / min dopamine solution in No. 1 ball mill and mix it for 60 minutes, then add glacial acetic acid to No. 1 ball mill to adjust the pH to 4.6, then add 20% ferric nitrate solution into No. 60 minutes, then add ammonia water with a mass fraction of 30% to the No. 1 ball mill to adjust the pH to 8.3, then add tetraethyl orthosilicate dropwise to the No. 1 ball mill with a rubber dropper, mix for 60 minutes in the ball mill, and then add potassium permanganate , and continue ball milling and mixing for 60 minutes to obtain a modified bottom layer material;

[0088] (2) In p...

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Abstract

The invention discloses a nanoparticle containing gradient wear-resistant coating and a preparation method thereof, and belongs to the technical field of material processing. The preparation method comprises the following steps: performing mixing and ball milling on nano-aluminum powder, a dopamine solution and sodium fluoride; adding glacial acetic acid to regulate pH; then adding a ferric nitrate solution; mixing by ball milling; adding ammonia water to regulate pH; dropwise adding tetraethoxysilane; mixing by ball milling; adding potassium permanganate; continuously mixing by ball milling to obtain a modified base material; mixing nanometer aluminum oxide, cryolite, activated carbon, copper and rare earth by ball milling; screening to obtain a pre-treated transition material; mixing chromic oxide, cobalt, tungsten and copper oxide by ball milling; screening to obtain a pre-treated wear-resistant material; sequentially washing a base material with water, alkali, water and sulfuric acid to obtain a pre-treated base material; coating with the modified base material; spraying the pretreated transition material by means of plasma; and performing laser cladding on the pre-treated wear-resistant layer to obtain the nanoparticle containing gradient wear-resistant coating. The nanoparticle containing gradient wear-resistant coating is outstanding in wear resistance.

Description

technical field [0001] The invention discloses a gradient wear-resistant coating containing nanoparticles and a preparation method thereof, belonging to the technical field of material processing. Background technique [0002] Functional gradient coating material (functional gradient coating) refers to a class of coating materials with a gradient structure prepared on a prefabricated substrate by a coating method. Function has unique superiority. An ideal functionally graded coating should achieve a complete gradient change in composition and structure from the substrate to the coating surface, but there are still serious deficiencies in the preparation of gradient materials for coatings. [0003] Laser cladding technology is an advanced surface strengthening technology. The selected coating material is placed on the surface of the cladding substrate through different feeding methods, and then irradiated by laser to melt the thin layer on the surface of the substrate at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/134C23C4/067C23C24/10C23G1/19C23G1/08C23C30/00C22C1/05C22C30/00C22C29/12C23C28/02C22C1/10
CPCC22C1/05C22C21/00C22C29/005C22C29/12C22C30/00C23C4/067C23C4/134C23C24/103C23C28/021C23C30/00C23G1/081C23G1/19
Inventor 辛钧意
Owner 吉林大贺铁路机车配件制造有限公司