Alloy and silicon carbide ceramic integrated protective armor structure and preparation method thereof

Abstract

The invention provides an alloy and silicon carbide ceramic integrated protective armor structure and a preparation method thereof.The armor structure comprises a ceramic plate framework, long-plate-shaped hole channels distributed regularly are formed in the ceramic plate framework, and the long-plate-shaped hole channels are filled with metal alloy materials formed through pouring; the ceramic plate framework is provided with a metal alloy wrapping layer formed through pouring. During preparation, the ceramic plate framework internally provided with regularly distributed long-plate-shaped hole channels is prepared firstly, then alloy liquid is poured into a mold, the molten alloy liquid is injected into the mold to completely immerse the ceramic plate and fill the long-plate-shaped hole channels in the ceramic plate, and a uniform wrapping layer is formed on the surface of the ceramic plate. According to the structure, alloy and silicon carbide ceramic are effectively combined, reasonable structural design is adopted, high-speed penetrating objects are effectively blocked through the synergistic effect of the high-strength titanium alloy frame and the ceramic plate, and the multiple functions of bulletproof, impact resistance, high temperature resistance, corrosion resistance and the like can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of composite armor structure, and particularly relates to an alloy and silicon carbide ceramic integrated protective armor structure and a preparation method thereof. BACKGROUND

[0002] At present, with the increasing demand for protective equipment, the research and development of various armor materials have become a hot field. Titanium alloy and ceramic material each have unique mechanical properties. Titanium alloy is widely used in aerospace, military and other fields due to its high strength, light weight and corrosion resistance. Silicon carbide ceramic plays an important role in bulletproof armor due to its high hardness, high temperature resistance and bullet resistance. In the prior art, the protective effect of a single material has certain limitations.

[0003] Most of the existing composite protective armors adopt a splicing combination mode. For example, US7069836B1 provides a ceramic armor and a method of manufacturing by encapsulation including the use of a reinforcing plate. In the invention, a metal base plate is first manufactured, the metal base plate has a metal frame assembled thereon, the metal frame has a central opening, and a ceramic material and a reinforcing plate are placed in the central opening. The metal for encapsulating the ceramic material can include titanium alloy, and the ceramic material can include silicon carbide, boron carbide, tungsten carbide, titanium diboride, aluminum oxide or aluminum nitride. The reinforcing plate is preferably made of a metal ceramic composite material, but can also be composed of an armored ceramic. A hot pressing process is performed on the armored layer to plastically deform the metal around the encapsulated ceramic material. The defect of this method is that the ceramic structure and the metal layer are not tightly combined, cannot realize the synergistic effect, and have the risk of falling off. Therefore, it is necessary to develop a new type of composite armor that combines the advantages of titanium alloy and ceramic to improve the protective performance of the armor. SUMMARY

[0004] In order to solve the problems in the prior art, the present application provides an alloy and silicon carbide ceramic integrated protective armor structure and a preparation method thereof. The structure effectively combines the alloy and silicon carbide ceramic, adopts reasonable structural design, realizes effective blocking of high-speed penetrators through the synergistic effect of the high-strength titanium alloy frame and the ceramic plate, and can realize multiple functions such as bulletproof, impact resistance, high temperature resistance and corrosion resistance.

[0005] The present application provides an alloy and silicon carbide ceramic integrated protective armor structure, which comprises a ceramic plate skeleton, a long plate type hole with regular distribution is opened in the interior of the ceramic plate skeleton, a metal alloy material poured and formed is filled in the interior of the long plate type hole, and the ceramic plate skeleton has a metal alloy wrapping layer poured and formed.

[0006] Further improvement, the metal alloy material filled in the interior of the long plate type hole and the metal alloy material of the wrapping layer outside the ceramic plate skeleton are both titanium alloy materials.

[0007] The application also provides a preparation method of the alloy and silicon carbide ceramic integrated protective armor structure, comprising the following steps: 1) Preparation of ceramic plate: high-quality silicon carbide ceramic raw materials are selected to prepare a ceramic plate with regularly distributed long plate-shaped channels in the interior; 2) Fixing of ceramic plate: the ceramic plate is placed in a casting mold to ensure that the ceramic plate is completely and stably fixed in the mold; 3) Casting of alloy liquid: the alloy liquid is heated to high temperature until completely melted to reach the liquid temperature required for casting, and the molten alloy liquid is injected into the mold under vacuum conditions to completely immerse the ceramic plate, fill the internal long plate-shaped channels and form a uniform wrapping layer on the surface of the ceramic plate; 4) Cooling and solidification: the cooling and solidification are carried out in stages, slow cooling is first performed to ensure that the combination of the alloy liquid and the ceramic plate will not crack or peel due to a large temperature difference; after the alloy liquid is completely solidified, a solid titanium alloy cladding layer is formed to wrap each part of the ceramic plate; 5) Processing of final product: after the alloy liquid is completely solidified, the armor structure is cooled to room temperature, the mold is taken out, and an integrated protective armor structure is preliminarily formed, and the finished product is further processed to obtain the final product.

[0008] Further improvement, the further processing process of step 5) includes surface polishing and edge trimming to ensure that the armor structure has better mechanical strength and smoothness.

[0009] The application has the following advantages: 1. The alloy and silicon carbide ceramic integrated protective armor structure can realize multiple functions such as bulletproof, impact resistance, high temperature resistance and corrosion resistance, and is suitable for protective requirements of modern vehicles, aerospace vehicles and the like, and has the advantages of being lighter, stronger and more durable compared with traditional armor.

[0010] 2. Through reasonable composite design, the structure improves the protective performance while maintaining the integrated structure, and through casting of the molten alloy liquid, the metal alloy and the ceramic plate form a firm combination, thereby enhancing the overall strength of the armor and avoiding the delamination problem of traditional multi-layer armor structure. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0012] Figure 1This is a schematic diagram of the casting process of the present invention. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] One specific embodiment of the present invention is as follows: A protective armor structure integrating titanium alloy and silicon carbide ceramic is designed, comprising: Titanium alloy matrix: This constitutes the supporting frame of the armor and possesses excellent mechanical properties, toughness, and impact resistance. The titanium alloy frame employs a structured design to enhance its ability to disperse external impact forces.

[0015] Ceramic plate: Made of high-strength silicon carbide ceramic material, bonded to a titanium alloy frame, it is used to withstand penetrating attacks. The ceramic material has high hardness, which can effectively resist the penetration of high-speed projectiles or fragments.

[0016] Composite structure design: The titanium alloy frame and ceramic plate are combined into an integrated structure through casting, which can achieve uniform force distribution under stress, reduce stress concentration between materials, and further improve the armor's impact resistance.

[0017] The specific preparation method of this invention is as follows: Preparation of ceramic plates First, high-quality silicon carbide ceramic raw materials are selected, and homogeneous ceramic plates are prepared using conventional ceramic forming processes (such as dry pressing and isostatic pressing). To enhance the structural properties of the ceramic plates, particularly their impact resistance and ability to disperse external forces, regularly distributed elongated channels are then created within the ceramic plates. These channels effectively reduce the weight of the ceramic plates while improving their impact and fracture resistance.

[0018] 2. Fixing the ceramic plate After the perforation process is completed, the ceramic plate is placed in the casting mold, ensuring that it is completely and securely fixed within the mold. The position of the ceramic plate within the mold must be precise to prevent displacement during subsequent casting.

[0019] 3. Casting of molten titanium alloy The molten titanium alloy is heated to a high temperature until it is completely melted, reaching the liquid temperature required for casting (the melting point of titanium alloys is typically around 1650°C). The molten titanium alloy is then cast under vacuum conditions to avoid air bubbles or other impurities in the metal, thus ensuring the high strength and stability of the final armor. In a vacuum environment, the molten titanium alloy is injected into a mold, completely immersing the ceramic plate and forming a uniform coating layer on the surface of the ceramic plate.

[0020] 4. Cooling and curing Once the molten titanium alloy is successfully poured into the mold, it needs to be gradually cooled and solidified to ensure a strong bond between the titanium alloy and the ceramic plate. Typically, the cooling process is carried out in stages. First, slow cooling is performed to ensure that the bond between the titanium alloy and the ceramic plate does not crack or peel due to excessive temperature differences. After the titanium alloy has completely solidified, a strong titanium alloy coating layer is formed, encapsulating all parts of the ceramic plate.

[0021] 5. Processing of the final product After the titanium alloy liquid has completely solidified, the armor structure is allowed to cool to room temperature before the mold is removed, resulting in a preliminary integrated titanium alloy / silicon carbide ceramic protective armor structure. At this point, the ceramic plate is completely encased in the titanium alloy, forming a unified protective structure. Further processing, such as surface polishing and edge trimming, can then be performed on the finished product to ensure better mechanical strength and smoothness, thereby improving its impact resistance and wear resistance.

[0022] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, for the device embodiments, the above descriptions are merely preferred embodiments of the present invention. Since they are fundamentally similar to the method embodiments, the descriptions are relatively simple, and relevant parts can be referred to the descriptions of the method embodiments. The above descriptions are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention, without departing from the principle of the present invention, should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An integrated protective armor structure of alloy and silicon carbide ceramic, characterized in that: It includes a ceramic plate skeleton, with regularly distributed elongated plate-shaped channels inside the ceramic plate skeleton. The elongated plate-shaped channels are filled with cast metal alloy material, and the ceramic plate skeleton has a cast metal alloy coating layer.

2. The integrated protective armor structure of alloy and silicon carbide ceramic according to claim 1, characterized in that: The metal alloy material filling the long plate-shaped channel and the metal alloy material wrapping the ceramic plate skeleton are both titanium alloy materials.

3. A method for preparing an integrated protective armor structure of alloy and silicon carbide ceramic, characterized in that... Includes the following steps: 1) Preparation of ceramic plate: Select high-quality silicon carbide ceramic raw materials to prepare a uniform ceramic plate with regularly distributed long plate-shaped channels inside. 2) Fixing the ceramic plate: Place the ceramic plate in the casting mold, ensuring that the ceramic plate can be completely and securely fixed in the mold; 3) Casting of molten alloy: The molten alloy is heated to a high temperature until it is completely melted and reaches the liquid temperature required for casting. Casting is carried out under vacuum conditions. The molten alloy is injected into the mold, completely immersing the ceramic plate, filling the internal long plate-shaped channels, and forming a uniform coating layer on the surface of the ceramic plate. 4) Cooling and curing: Cooling and curing are carried out in stages. First, slow cooling is performed to ensure that the bonding between the alloy liquid and the ceramic plate will not crack or peel off due to excessive temperature difference. After the alloy liquid is completely cured, a strong titanium alloy coating layer is formed, which covers all parts of the ceramic plate. 5) Final product processing: After the alloy liquid has completely solidified, wait for the armor structure to cool to room temperature, remove the mold, and obtain the initially formed integrated protective armor structure. Further processing of the finished product will yield the final product.

4. The method for preparing the integrated protective armor structure of alloy and silicon carbide ceramic according to claim 3, characterized in that: Step 5) The further processing includes surface polishing and edge trimming to ensure that the armor structure has better mechanical strength and smoothness.

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