Method for preparing wave-absorbing ceramic component on basis of 3D printing technique

Abstract

The invention discloses a method for preparing a wave-absorbing ceramic component on basis of a 3D printing technique. The method comprises the following steps: establishing a 3D model by using a computer, mixing ceramic powder, electromagnetic absorbent powder and an organic adhesive, preparing a blank by using a 3D printing laser sintering technique, and carrying out densification sintering on the blank to obtain the wave-absorbing ceramic component. The prepared ceramic component has excellent wave-absorbing property, keeps the mechanical properties and corrosion resistance of the ceramic, and can be subjected to individualized precise design according to needs to obtain any complex structure. The method is simple to operate, has the advantages of short process and small occupied area, and satisfies the industrial production.

Description

technical field [0001] The invention relates to a method for preparing wave-absorbing ceramic components based on 3D printing technology, which belongs to the field of wave-absorbing ceramic materials. Background technique [0002] Stealth technology not only affects the outcome of modern warfare, but also affects the mode of modern warfare. With the development of high technology, future weapon systems will comprehensively adopt various stealth technologies to improve the penetration and attack performance of weapon systems. The absorbing materials used in weapon systems need to have specific and good structural properties (high strength, good toughness, etc.) and environmental performance (wear resistance, corrosion resistance, high temperature resistance, etc.), and high-temperature absorbing materials are particularly urgent in the modern battlefield. Ceramic materials have the advantages of light weight, high temperature resistance, high hardness, friction resistance, c...

AI Technical Summary

Problems solved by technology

Ceramic materials have the advantages of light weight, high temperature resistance, high hardness, friction resistance, corrosion resistance, and special electrical conductivity, but they are brittle, poor in fatigue resistance, and sensitive to stress and cracks, while metal materials are tough and machinable. 1. Good electrical and thermal conductivity. If it is imagined that ceramic materials and metal materials can be combined together, the advantages of the two types of materials can be fully utilized, the electromagnetic properties of the surface of the ceramic powder can be changed, and the material’s absorption of electromagnetic waves can be enhanced. Research on wave materials has shown that only fibrous ceramics as a matrix (only SiC, B 2 o 3 , SiO 2 and other materials, and cannot be used at the same time) ceramic-metal absorbing materials, especially the metal phase is difficult to introduce into the ceramic matrix, and the process is very complicated, it is often difficult to realize industrial application; the ceramic-metal composite absorbing materials prepared at the same time Due to the different thermal expansion coefficients of the two different types of materials and the difficulty of surface bonding, the metal content in this type of product is usually very small, so the absorbing effect is not good

Images