Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of iron-nickel composite coating and iron-nickel composite coating material

A composite coating, iron-nickel technology, applied in the field of preparation of iron-nickel composite coating materials, iron-nickel composite coating, can solve the problems of poor powder deposition quality, particle diffusion, large particle interference, etc., to reduce the loss of speed , uniform tissue composition and high deposition efficiency

Inactive Publication Date: 2022-03-25
GUANGDONG INST OF NEW MATERIALS
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for many reasons, it is practically impossible to obtain a deposition efficiency equal to the uniformity
The main reason is: the air pressure imbalance between the jet and the external atmosphere leads to the diffusion of particles, so that some particles at the edge of the outer jet cannot reach the critical velocity to reach the surface or collide with the substrate
The velocity of particles at the periphery of the jet is lower than that at the centerline of the jet, resulting in an inability to obtain a uniform coating of the tissue
At the same time, the shock wave generated by the supersonic jet on the surface of the substrate greatly interferes with the tiny particles with a particle size of less than 2 microns, resulting in poor deposition quality of such powders, or even failure to deposit, affecting the final quality of the 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
  • Preparation method of iron-nickel composite coating and iron-nickel composite coating material
  • Preparation method of iron-nickel composite coating and iron-nickel composite coating material
  • Preparation method of iron-nickel composite coating and iron-nickel composite coating material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The embodiment of the present invention provides a method for preparing an iron-nickel composite coating, which adopts a method of thermal aerodynamic solid-state deposition, and specifically includes the following steps:

[0029] S1, preparation of iron-nickel mixed powder

[0030] The preparation process of the iron-nickel mixed powder includes: mixing and drying the iron powder and the nickel powder, so as to obtain the thermal aerodynamic solid-state deposition raw material meeting the requirements.

[0031] Further, the mass ratio of iron powder and nickel powder is 1:0.8-1 (such as 1:0.8, 1:0.9, 1:1, etc.); the particle size of iron powder is 40-50 μm (such as 40 μm, 45 μm, 50 μm, etc. ), the particle size of the nickel powder is 30-45 μm (such as 30 μm, 35 μm, 40 μm, 45 μm, etc.). In order to obtain a uniform coating, the particle size of iron powder and nickel powder should not be too large, and should be controlled within the above range. The purity of iron p...

Embodiment 1

[0053] The present embodiment provides a kind of preparation method of iron-nickel composite coating, comprises the following steps:

[0054] (1) Using iron powder with a purity of 99.9% and a particle size of 40 μm and a nickel powder with a purity of 99.9% and a particle size of 30 μm as raw materials, the iron powder and nickel powder were mixed by high-energy ball milling for 2 hours according to a mass ratio of 1:0.8, Then, it was dried in a vacuum oven at a temperature of 80° C. for 30 minutes to obtain a material for thermal aerodynamic solid-state deposition.

[0055] (2) 316L stainless steel is used as the substrate, and the size of the substrate is 100mm*100mm*2.5mm. The stainless steel substrate is polished, sandblasted, and preheated in advance; Boron magnetic length*width*height=20cm*10cm*2cm is a permanent magnet in the form of a cuboid (remanent magnetism Br=5T, coercive force Hc=1000kA / m), and the spraying material is sprayed on the stainless steel substrate by...

Embodiment 2

[0059] The present embodiment provides a kind of preparation method of iron-nickel composite coating, comprises the following steps:

[0060] (1) Iron powder with a purity of 99.9% and a particle size of 40 μm and a nickel powder with a purity of 99.9% and a particle size of 35 μm are used as raw materials, and the iron powder and nickel powder are mixed by high-energy ball milling at a mass ratio of 1:0.9 for 2.5 hours , and then dried in a vacuum drying oven at a temperature of 95° C. for 35 minutes to obtain a thermal aerodynamic solid-state deposition material.

[0061] (2) 316L stainless steel is used as the substrate, and the size of the substrate is 100mm*100mm*2.5mm. The stainless steel substrate is polished, sandblasted, and preheated in advance; Boron magnetic length*width*height=20cm*10cm*2cm is a permanent magnet in the form of a cuboid (remanent magnetism Br=5T, coercive force Hc=1000kA / m), and the spraying material is sprayed on the stainless steel substrate by u...

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 diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of an iron-nickel composite coating and an iron-nickel composite coating material, and relates to the technical field of coating preparation. According to the preparation method of the iron-nickel composite coating, in the deposition process, a magnet on the back face of a deposition base body is used for generating a high-intensity magnetic field, micron-sized iron-nickel powder particles are accelerated in a supersonic speed flow and are further subjected to the action of the high-intensity magnetic field, and then the secondary acceleration effect is achieved, so that the loss of the particle collision speed caused by gas shock waves during particle impact is reduced, and the service life of the coating is prolonged. And the deposition success rate of iron-nickel particles below 2 microns is greatly improved. Compared with a traditional process, the magnetic auxiliary gas dynamic spraying method has the advantages that the deposition efficiency is higher, particles are combined more tightly, the coating density is high, components are uniform, the porosity is low, and better magnetic conductivity, wear resistance and corrosion resistance are achieved.

Description

technical field [0001] The invention relates to the technical field of coating preparation, in particular to a method for preparing an iron-nickel composite coating and an iron-nickel composite coating material. Background technique [0002] Thermal aerodynamic solid-state deposition is a coating preparation process. Its principle is to use converging-diverging nozzles to generate supersonic gas jets (the initial heating temperature of the airflow is 300-1000°C), and accelerate the particles to be deposited to 200-1500m / s. Upon impact with the target surface, the particles undergo enormous plastic deformation, creating the intimate contact necessary for successful bonding to the substrate. Unlike the high-temperature thermal spraying process, the temperature of the thermal aerodynamic solid-state deposition working gas is much lower than the melting point of the granular material, which can avoid the harmful effects caused by high temperature (such as oxidation, thermal resi...

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 Applications(China)
IPC IPC(8): C23C24/08H01F41/16
CPCC23C24/085H01F41/16
Inventor 谢迎春黄仁忠邓春明兰海明赵仕杰俞泽新王昊
Owner GUANGDONG INST OF NEW MATERIALS
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