Preparation method of porous ceramic reinforced metal composite armor with gradient porosity

By designing a porous ceramic core plate with gradient porosity and adopting thermal isostatic pressing technology, the three-dimensional continuous recombination of ceramics and metals is achieved, solving the problem of insufficient impact and multiple strike capabilities of existing armors, and significantly improving the comprehensive elastic resistance of armor.

CN115533080BActive Publication Date: 2025-03-28HUAZHONG UNIV OF SCI & TECH
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Patent Information

Application Number
CN202211175781.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-09-26
Publication Date
2025-03-28
Estimated Expiration
2042-09-26

AI Technical Summary

Technical Problem

The existing metal cermet composite armor has weak impact and collapse resistance, poor resistance to multiple strikes, and discontinuous interface stress, resulting in average comprehensive elastic resistance.

Method used

The preparation method of porous ceramic reinforced metal composite armor with gradient porosity is adopted. By designing a three-dimensional model of the ceramic core plate, using additive preparation technology and thermal isostatic pressing technology to achieve three-dimensional continuous recombination of ceramics and metals, and improve interface matching and strength.

Benefits of technology

It significantly improves the armor's resistance to invasion, impact resistance, collapse resistance and multiple strike resistance, and obtains better comprehensive anti-elastic performance.

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Abstract

The present invention belongs to the technical field related to the preparation of metal ceramic composite armor, and discloses a method for preparing porous ceramic reinforced metal composite armor with gradient porosity, including: parametric design of three-period minimal surface continuous gradient porous ceramic core plate; preparing the corresponding ceramic core plate by additive manufacturing and reaction sintering; infiltrating the metal substrate melt to fill the internal pores of the ceramic core plate; and further densifying the ceramic and metal and strengthening the composite interface strength through hot isostatic pressing process. The present invention also discloses a corresponding porous ceramic reinforced metal composite armor with gradient porosity. Through the present invention, not only can the stress distribution be uniform when under pressure, which can effectively improve the bulletproof performance of the armor, especially the ability to resist multiple bullets, but also the ceramic core plate can be improved in terms of absorbing impact energy, and at the same time has the advantages of simple preparation, easy control, and good comprehensive performance.
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