The inherent brittleness of ceramics, primarily due to restricted atomic motions from rigid ionic or covalent bonded structures, is a persistent challenge. This characteristic hinders dislocation nucleation in ceramics, thereby impeding the enhancement of plasticity through a dislocation-engineering strategy commonly used in metals. Finding a strategy that continuously generates dislocations within ceramics may enhance plasticity. Here, we propose a “borrowing-dislocations” strategy that uses a tailored interfacial structure with well-ordered bonds. Such an approach enables ceramics to have greatly improved tensile ductility by mobilizing a considerable number of dislocations in ceramic borrowed from metal through the interface, thereby overcoming the challenge associated with direct dislocation nucleation within ceramics. This strategy provides a way to enhance tensile ductility in ceramics.

中文翻译：

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陶瓷延展性的借用位错


陶瓷固有的脆性（主要是由于刚性离子或共价键结构的原子运动受限）是一个持续存在的挑战。这一特性阻碍了陶瓷中的位错成核，从而阻碍了通过金属中常用的位错工程策略来增强塑性。找到一种在陶瓷内持续产生位错的策略可能会增强可塑性。在这里，我们提出了一种“借位位错”策略，该策略使用具有良好有序键的定制界面结构。这种方法通过界面调动陶瓷中从金属借用的大量位错，使陶瓷具有大大提高的拉伸延展性，从而克服了与陶瓷内直接位错成核相关的挑战。该策略提供了一种增强陶瓷拉伸延展性的方法。