Negative Poisson's ratio cell lattice type ceramic skeleton reinforced composite material and manufacturing method

Abstract

The invention belongs to the field of armor materials, and particularly relates to a negative Poisson's ratio cell lattice type ceramic skeleton reinforced composite material and a manufacturing method. The composite material comprises a ceramic framework reinforcing phase and a metal matrix phase, wherein the ceramic framework reinforcing phase is formed by arraying negative Poisson's ratio cellsin a three-dimensional space; the negative Poisson's ratio cells are formed by vertically nesting and connecting two double-arrow unit structures at an inner concave end point; a metal matrix infiltrates and completely fills a ceramic framework through a melt infiltration process; and the periodic communication structure composite material with a macroscopic negative Poisson's ratio effect is formed after the metal matrix is solidified. According to the composite material, the problems that granular or fibrous ceramics are unevenly distributed in a traditional ceramic reinforced metal matrixcomposite material, the ceramic reinforced phase is prone to displacement in a projectile penetration process, and the difference of the penetration resistance in all directions is large are overcome,the composite material has stronger macroscopically uniform fracture resistance, and the local density of a target plate loading area is increased under the negative Poisson's ratio effect to furtherimprove the bulletproof performance.

Description

technical field [0001] The invention belongs to the field of lightweight armor materials, and in particular relates to a negative Poisson's ratio cell lattice-shaped ceramic skeleton reinforced composite material and a manufacturing method thereof. Background technique [0002] At present, the protection of armored vehicles requires not only high protection, but also high flexibility, which requires armor materials to have high strength, high hardness, high toughness and lightweight composite properties. Ceramic-metal matrix composites have gradually become a research hotspot in the field of armor protection by combining the excellent properties of high strength, high compressive strength of ceramic materials and high toughness of metal materials, and have broad application prospects. [0003] At present, the traditional ceramic-metal matrix composite target plate mainly adopts layered composite structure and reinforced phase dispersed distribution structure. Patent CN 1037...

AI Technical Summary

Problems solved by technology

However, under the high strain rate loading of this kind of composite material target plate, the ceramic reinforcement phase particles will displace and cause the dislocation density to increase, which makes the anti-ballistic performance in different directions significantly different.

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