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通过接口工程实现异型微结构陶的强度和性极限

Zezhou He¹, Rohit Pratyush Behera¹, Huajian Gao²

¹School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang avenue, 639798, Singapore. hortense@ntu.edu.sg.

Materials horizons

|December 11, 2025

概括

研究人员制定了先进的陶复合材料中裂纹偏移的标准,模仿天然材料,如. 这种接口工程增强了强度和性,克服了下一代陶的加工挑战.

科学领域:

材料科学材料科学材料科学
陶工程陶工程
生物启发材料生物启发材料

背景情况:

先进的陶复合材料难以与天然材料的强度和性相匹配,例如.
生物启发的异型微结构陶 (AMCs) 模仿nacre的架构,但面临着陶矩阵接口的挑战.
薄弱的接口通过裂纹偏移增强性,但与传统烧结的密集化目标相冲突.

研究的目的:

建立在分层微观结构中裂纹屈曲的通用标准.
确定增强AMC强度和性的机制.
弥合接口特性和高性能陶的加工之间的差距.

主要方法:

开发了能量和强度为裂偏移所规定的标准.
分析了矩阵刚度和界面性在裂传播中的作用.
研究了微血小板厚度作为氨酸AMC中的关键参数.

主要成果:

确定了低刚度矩阵和低度接口作为强度和性的关键.
经过证明的裂倾斜,分支和桥梁机制放大了断裂性.
预测优化的氨酸AMC的显著性放大 (13.1-至21.8倍).

结论:

接口工程对于设计下一代陶复合材料至关重要.
定义精确的接口属性,以克服处理冲突.
在AMC中实现了2.25GPa的理论强度和接近nacre的性.

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