A kind of fe/zrh2 nanocrystalline composite particle and its preparation method and application

A nanocrystalline composite and nanocrystalline technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of complex magnetic permeability decrease, complex permittivity increase, etc., and achieve improvement Electromagnetic properties, guaranteed temperature resistance and electromagnetic properties, simple preparation process
CN110270683BActive Publication Date: 2022-01-04武汉双虎涂料股份有限公司
15 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
武汉双虎涂料股份有限公司
Publication Date
2022-01-04

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a Fe / ZrH 2 Nanocrystalline composite particles, which are composed of carbonyl iron powder and ZrH 2 Particles are the main raw material, which is easily prepared by ball milling + stirring milling. The present invention works by combining ZrH 2 The stabilization of particles on the microscopic grain boundaries of carbonyl iron powder, the control technology of Zr element content and the control technology of Zr distribution, to obtain Fe / ZrH with temperature resistance 2 composite particles; the Fe / ZrH 2 After heat treatment at 500 °C for 1 h, the grain size of the composite particles is within 20 nm, the electromagnetic parameters of 2-18 GHz do not change significantly, and the composite particles have good temperature resistance.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of electronic materials, in particular to a Fe / ZrH 2 Nanocrystalline composite particle and its preparation method and application. Background technique

[0002] Microwave absorbing materials are widely used in military stealth, electromagnetic shielding and human body safety protection because they can absorb and attenuate incident electromagnetic waves and convert them into heat energy for loss. With the development of military technology, the temperature of the surface skin of the aircraft can reach more than 300°C during flight, and the temperature near the tailpipe of the engine can reach more than 500°C. Therefore, heat-resistant wave-absorbing materials are of great significance to maintain the stealth performance of the aircraft under working conditions.

[0003] The currently developed heat-resistant absorbing materials are divided into dielectric loss heat-resistant wave absorbing materials and magnetic lo...

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