Toughened impact-resistant ceramic structural member
By embedding high-strength fibers, nanoparticle layers, honeycomb support layers, and layered gradient structure layers into the ceramic matrix, the problems of brittleness and low strength of ceramic materials are solved, and the toughening and impact resistance of ceramic structural components are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU EVERBEST ENG CERAMICS
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-05
AI Technical Summary
The brittleness and low structural strength of ceramic materials make them prone to cracking and breaking under external impact, which limits their widespread application.
By embedding high-strength fibers, nanoparticle layers, honeycomb support layers, microcrack layers, and layered gradient structure layers into a ceramic matrix, the toughness and impact resistance of ceramics are enhanced through mechanisms such as fiber bridging, crack deflection, pore wall deformation, and interface exfoliation.
It significantly improves the toughness and impact resistance of the ceramic matrix, prevents sudden fracture, and enhances its durability and reliability in practical applications.
Smart Images
Figure CN224199303U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ceramic structural components, specifically a toughened and impact-resistant ceramic structural component. Background Technology
[0002] Toughened and impact-resistant ceramic structural components refer to structural components that enhance the toughness of ceramic materials through specific technical means to improve their impact resistance. Although ceramic materials have advantages such as high melting point, high hardness, high wear resistance and oxidation resistance, their brittleness limits their widespread application. Toughened and impact-resistant ceramic structural components improve the toughness of ceramic materials through various toughening mechanisms, thereby enhancing their durability and reliability in practical applications.
[0003] Regarding the aforementioned technologies, ceramic materials have advantages such as high melting point, high hardness, high wear resistance, and oxidation resistance. However, their overall texture is relatively brittle, their toughness is poor, and their structural strength is low, which can lead to cracking and breakage when subjected to external impact.
[0004] Therefore, this utility model provides a toughened and impact-resistant ceramic structural component to solve the above problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a toughened and impact-resistant ceramic structural component, thus solving the aforementioned problems.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a toughened and impact-resistant ceramic structural component, comprising a ceramic matrix, a positioning frame installed on the outer wall of the ceramic matrix, high-strength fibers filled inside the ceramic matrix, a nanoparticle layer installed inside the ceramic matrix, a honeycomb support layer installed inside the ceramic matrix, a microcrack layer installed inside the ceramic matrix, and a layered gradient structure layer installed inside the ceramic matrix.
[0007] The above technical solutions enable the ceramic matrix to have good toughness and impact resistance.
[0008] Furthermore, the high-strength fibers embedded in the ceramic matrix can be carbon fiber or silicon carbide fiber. The high-strength fibers are mainly used for fiber bridging and crack deflection mechanisms to absorb energy.
[0009] Through the above technical solution, the fibers undergo multiple stages of energy dissipation during crack propagation, such as breakage, pull-out, and interface debonding, thereby improving the toughness of the ceramic matrix.
[0010] Furthermore, the nanoparticle layer added to the ceramic matrix hinders grain boundary slip, thereby increasing the impact resistance of the ceramic matrix.
[0011] Through the above technical solutions, nanoparticles hinder grain boundary slip, whiskers bridge cracks, and crack propagation requires additional energy.
[0012] Furthermore, the honeycomb support layer is designed with a honeycomb porous framework inside, which absorbs impact energy through the deformation of the pore walls. The honeycomb support layer needs to balance porosity and strength, with the porosity controlled between 20% and 40%.
[0013] The above technical solutions enable the ceramic body to have good impact resistance.
[0014] Furthermore, the microcrack layer set in the ceramic matrix is mainly used to induce crack propagation along a specific path to avoid sudden fracture.
[0015] The above technical solutions improve the stability of ceramic substrates and prevent problems such as sudden cracking.
[0016] Furthermore, the layered gradient structure installed in the ceramic matrix is a biomimetic nacre structure, with alternating layers of high-strength Al2O3 and tough layers such as metal or polymer, which utilize interfacial exfoliation and crack bifurcation to delay failure.
[0017] The above technical solutions can increase the impact resistance of the ceramic matrix and improve its safety.
[0018] Beneficial effects
[0019] This invention provides a toughened and impact-resistant ceramic structural component. Compared with the prior art, it has the following advantages:
[0020] (1) This toughened and impact-resistant ceramic structural component utilizes high-strength fibers embedded within the ceramic matrix. Specifically, carbon fiber or silicon carbide fiber can be used. These high-strength fibers primarily function as fiber bridging and crack deflection mechanisms to absorb energy. During crack propagation, the fibers undergo multiple energy dissipations, including fracture, pull-out, and interface debonding, significantly improving fracture toughness and increasing the overall toughness of the ceramic matrix. The nanoparticle layer within the ceramic matrix hinders grain boundary slip and whiskers bridge cracks. Simultaneously, crack propagation requires additional energy, further enhancing the impact resistance and toughness of the ceramic matrix. The honeycomb support layer in the ceramic matrix is mainly designed with a honeycomb porous framework inside. It absorbs impact energy through the deformation of the pore walls. The honeycomb support layer needs to balance porosity and strength. The porosity is controlled at about %-% to improve the overall impact resistance of the ceramic matrix. The microcrack layer in the ceramic matrix is mainly used to induce cracks to propagate along a specific path to avoid sudden fracture. The layered gradient structure layer in the ceramic matrix is a biomimetic nacreous shell structure. The layered gradient structure layer alternately stacks a high-strength layer of Al2O3 and a tough layer such as metal or polymer. It delays failure by using interface peeling and crack bifurcation, which can improve the impact resistance of the ceramic matrix. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a cross-sectional view of the internal structure of this utility model;
[0023] Figure 3 This is a utility model Figure 2 Enlarged view of the structure at point A.
[0024] In the figure: 1. Positioning frame; 2. Ceramic matrix; 3. High-strength fiber; 4. Nanoparticle layer; 5. Honeycomb support layer; 6. Microcrack layer; 7. Layered gradient structure layer. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Example 1:
[0027] Please see Figures 1-3A toughened and impact-resistant ceramic structural component includes a ceramic substrate 2, a positioning frame 1 installed on the outer wall of the ceramic substrate 2, high-strength fibers 3 filling the interior of the ceramic substrate 2, a nanoparticle layer 4 installed inside the ceramic substrate 2, a honeycomb support layer 5 installed inside the ceramic substrate 2, a microcrack layer 6 installed inside the ceramic substrate 2, and a layered gradient structure layer 7 installed inside the ceramic substrate 2.
[0028] In this embodiment of the present invention, the purpose of this arrangement is that the ceramic substrate 2 is installed in the positioning frame 1, and through the arrangement of the high-strength fiber 3, nanoparticle layer 4, honeycomb support layer 5, microcrack layer 6 and layered gradient structure layer 7, the ceramic substrate 2 has good strength and impact resistance.
[0029] Example 2:
[0030] Please see Figures 1-3 This embodiment provides a technical solution based on embodiment one: the high-strength fiber 3 embedded in the ceramic matrix 2 can be carbon fiber or silicon carbide fiber. The high-strength fiber 3 is mainly used for fiber bridging and crack deflection mechanism to absorb energy. The nanoparticle layer 4 added in the ceramic matrix 2 hinders grain boundary slip and is used to increase the impact resistance of the ceramic matrix 2. The honeycomb support layer 5 is designed with a honeycomb porous framework inside, which absorbs impact energy through the deformation of the pore walls. The honeycomb support layer 5 needs to balance the porosity and strength, and the porosity is controlled at 20%-40%. The microcrack layer 6 set in the ceramic matrix 2 is mainly used to induce cracks to propagate along a specific path to avoid sudden fracture. The layered gradient structure layer 7 installed in the ceramic matrix 2 is a biomimetic shell nacre structure. The layered gradient structure layer 7 alternately stacks high-strength layer Al2O3 and toughness layer such as metal or polymer to delay failure by using interface peeling and crack bifurcation.
[0031] In this embodiment of the invention, the purpose of this arrangement is to give the ceramic substrate 2 good toughness and impact resistance, mainly by using the structure and adding energy-consuming components, thereby achieving the target effect.
[0032] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0033] Working principle: The high-strength fibers 3 embedded in the ceramic matrix 2 are primarily used for fiber bridging and crack deflection mechanisms to absorb energy. During crack propagation, the fibers undergo multiple stages of energy dissipation, including breakage, pull-out, and interface debonding, significantly improving fracture toughness and increasing the overall toughness of the ceramic matrix 2. The nanoparticle layer 4 embedded in the ceramic matrix 2 hinders grain boundary slip and bridges cracks with whiskers. Crack propagation requires additional energy, thus increasing the impact resistance and toughness of the ceramic matrix 2. The honeycomb structure embedded in the ceramic matrix 2... The support layer 5 mainly consists of an internally designed honeycomb porous framework that absorbs impact energy through pore wall deformation. The honeycomb support layer 5 needs to balance porosity and strength, with the porosity controlled at around 20%-40%. This mainly improves the overall impact resistance of the ceramic matrix 2. The microcrack layer 6 set in the ceramic matrix 2 is mainly used to induce cracks to propagate along a specific path to avoid sudden fracture. The layered gradient structure layer 7 set in the ceramic matrix 2 is a biomimetic nacreous shell structure. The layered gradient structure layer 7 alternately stacks high-strength Al2O3 layers and toughness layers such as metals or polymers, which delay failure by utilizing interfacial peeling and crack bifurcation, thereby improving the impact resistance of the ceramic matrix 2.
[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A toughened and impact-resistant ceramic structural component, characterized in that: The ceramic substrate (2) includes a positioning frame (1) installed on the outer wall of the ceramic substrate (2), high-strength fibers (3) filled inside the ceramic substrate (2), a nanoparticle layer (4) installed inside the ceramic substrate (2), a honeycomb support layer (5) installed inside the ceramic substrate (2), a microcrack layer (6) installed inside the ceramic substrate (2), and a layered gradient structure layer (7) installed inside the ceramic substrate (2).
2. The toughened and impact-resistant ceramic structural component according to claim 1, characterized in that: The high-strength fibers (3) embedded in the ceramic matrix (2) can be carbon fiber or silicon carbide fiber. The high-strength fibers (3) are mainly used for fiber bridging and crack deflection mechanisms to absorb energy.
3. The toughened and impact-resistant ceramic structural component according to claim 1, characterized in that: The nanoparticle layer (4) added to the ceramic matrix (2) hinders grain boundary slip and is used to increase the impact resistance of the ceramic matrix (2).
4. The toughened and impact-resistant ceramic structural component according to claim 1, characterized in that: The honeycomb support layer (5) is designed with a honeycomb porous frame inside, which absorbs impact energy through the deformation of the pore walls. The honeycomb support layer (5) needs to balance porosity and strength, with the porosity controlled at 20%-40%.
5. The toughened and impact-resistant ceramic structural component according to claim 1, characterized in that: The microcrack layer (6) set in the ceramic matrix (2) is mainly used to induce cracks to propagate along a specific path to avoid sudden fracture.
6. The toughened and impact-resistant ceramic structural component according to claim 1, characterized in that: The layered gradient structure layer (7) installed in the ceramic matrix (2) is a biomimetic pearl layer structure. The layered gradient structure layer (7) alternately stacks a high-strength layer of Al2O3 and a tough layer such as metal or polymer to delay failure by interfacial peeling and crack bifurcation.