Composite wave-absorbing material suitable for marine environment and preparation method thereof as well as application

A composite wave absorbing material, marine environment technology, applied in metal material coating process, antenna, coating and other directions, can solve the problem of iron-based alloy material unfavorable corrosion resistance, difficult to adapt to wave absorbing material thin, light, wide, strong Development trend and other issues, to achieve the effect of good amorphous formation ability and stability

Active Publication Date: 2019-09-13
HOHAI UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to obtain a higher amorphous content in the existing iron-based amorphous, the Cr element content is usually lower than 20wt.%, and the lower Cr element content is detrimental to the corrosion resis

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
  • Composite wave-absorbing material suitable for marine environment and preparation method thereof as well as application
  • Composite wave-absorbing material suitable for marine environment and preparation method thereof as well as application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A composite wave-absorbing material suitable for marine environments, comprising iron-based amorphous and hexagonal BCN, wherein the iron-based amorphous content is 95 wt%, and the hexagonal BCN content is 5 wt%; the iron-based amorphous comprises the following components, The specific weight percentages are as follows: 27wt% Cr, 4wt% B, 4wt% Si, 5wt% Cu, 7wt% Ni, 8wt% Mo, and the balance is Fe; the hexagonal BCN is a single-layer structure hexagonal BCN, a double-layer structure hexagonal BCN And at least one of the three-layer structure hexagonal BCN.

[0025] Composite absorbing material is made by the following steps:

[0026] (1) According to the above-mentioned iron-based amorphous composition and weight ratio, weigh a certain amount of low-carbon ferrochrome, high-carbon ferrochrome, ferroboron, ferrosilicon, electrolytic copper, electrolytic nickel, ferromolybdenum and pure iron (including low-carbon chromium The content ratio of iron and high-carbon ferrochrom...

Embodiment 2

[0035] A composite wave-absorbing material suitable for marine environments, comprising iron-based amorphous and hexagonal BCN, wherein the iron-based amorphous content is 90 wt%, and the hexagonal BCN composition is 10 wt%; the iron-based amorphous comprises the following components, The specific weight percentages are as follows: 27wt% Cr, 4wt% B, 4wt% Si, 5wt% Cu, 7wt% Ni, 8wt% Mo, and the balance is Fe; the hexagonal BCN is a single-layer structure hexagonal BCN, a double-layer structure hexagonal BCN And at least one of the three-layer structure hexagonal BCN.

[0036] The preparation method of the iron-based amorphous, the application and construction method of the composite wave-absorbing material in the coating in this embodiment are the same as those in Embodiment 1.

Embodiment 3

[0038] A composite wave-absorbing material suitable for marine environments, comprising iron-based amorphous and hexagonal BCN, wherein the iron-based amorphous content is 85 wt%, and the hexagonal BCN composition is 15 wt%; the iron-based amorphous contains the following components, The specific weight percentages are as follows: 27wt% Cr, 4wt% B, 4wt% Si, 5wt% Cu, 7wt% Ni, 8wt% Mo, and the balance is Fe; the hexagonal BCN is a single-layer structure hexagonal BCN, a double-layer structure hexagonal BCN And at least one of the three-layer structure hexagonal BCN.

[0039] The preparation method of the iron-based amorphous, the application and construction method of the composite wave-absorbing material in the coating in this embodiment are the same as those in Embodiment 1.

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
Granularityaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a composite wave-absorbing material suitable for marine environment and a preparation method thereof as well as application. The material comprises 85%-95% of iron-based amorphous materials and 5%-15% of hexagonal BCN ceramic, wherein the iron-based amorphous materials comprise the following components of, in percentage by weight, 27% of Cr, 4% of B, 4% of Si, 5% of Cu, 7%of Ni, 8% of Mo, and the balance Fe; the hexagonal BCN is prepared by a pyrolysis method to form a single-layer or few-layer structure hexagonal BCN, the preparation method comprises the following steps that firstly, raw materials for preparing the iron-based amorphous materials are added into a vacuum air atomization furnace for smelting, atomizing and powder screening is conducted, then the iron-based amorphous powder is fully mixed with the hexagonal BCN to obtain the powdery composite wave-absorbing material; and the composite wave-absorbing material is prepared by adopting a supersonic flame spraying technology to obtain the wave-absorbing coating suitable for the marine environment. According to the composite wave-absorbing material, a wave-absorbing coating can obtain good wave-absorbing performance, be good in bonding strength with a matrix and excellent in corrosion resistance, and the composite wave-absorbing material is suitable for severe marine environments.

Description

technical field [0001] The invention belongs to the thermal spraying field of material processing engineering, and in particular relates to a composite wave-absorbing material suitable for marine environments, a preparation method and application thereof. Background technique [0002] With the development of science and technology, a large number of military equipment is facing an increasingly complex task environment for space-based, ground-based, and sea-based multi-platform multi-spectrum reconnaissance and detection. Coating a layer of wave-absorbing coating on the surface of military equipment to achieve radar stealth is currently a common technical means. However, the wave-absorbing coating used in the marine environment (such as the wave-absorbing coating on the surface of the ship’s hull) will gradually decline in its wave-absorbing performance under corrosion, which will lead to a decline in the stealth performance of the ship. In order to solve the above problems ...

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): C23C4/06C23C4/129C22C45/02H01Q17/00
CPCC22C45/02C23C4/06C23C4/129H01Q17/00
Inventor 洪晟乔磊吴玉萍
Owner HOHAI UNIV
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