Abstract In nanocomposites, improved mechanical performance is critically linked to understanding and controlling interfacial properties. In the work reported here, ion implantation is introduced as a new method for tailoring the complex nanoscale interfaces between multiwall carbon nanotubes (MWCNTs) and a ceramic matrix. The results show that surface layers of the nanocomposite with high toughness can be created with C2+ ions. This enhanced toughening due to ion implantation is associated with large compressive stresses in the MWCNTs and with significant changes in the carbon structure. These observations are consistent with molecular dynamics (MD) simulations, which indicate that partial amorphization of the MWCNTs is enhanced by the compressive stress and confinement within the ceramic matrix. This work opens up new opportunities for using ion implantation to create a new class of exceptionally tough ceramic nanocomposites.

中文翻译：

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通过界面离子束工程的高韧性碳纳米管增强陶瓷

摘要 在纳米复合材料中，提高机械性能与理解和控制界面特性密切相关。在这里报道的工作中，引入了离子注入作为一种新方法，用于定制多壁碳纳米管 (MWCNT) 和陶瓷基质之间的复杂纳米级界面。结果表明，具有高韧性的纳米复合材料的表面层可以用 C2+ 离子产生。这种由于离子注入而增强的韧化与 MWCNT 中的大压缩应力和碳结构的显着变化有关。这些观察结果与分子动力学 (MD) 模拟一致，这表明 MWCNT 的部分非晶化通过陶瓷基体内的压应力和限制得到增强。