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首页> 外文期刊>Journal of Materials Research >Transmission Electron Microscopy Observation Of Nanoscale Deformation Structures In Nacre
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Transmission Electron Microscopy Observation Of Nanoscale Deformation Structures In Nacre

机译:珍珠层中纳米级变形结构的透射电镜观察

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摘要

The mechanical performance of nacre in seashells is generally described in terms of mesoscale mechanisms between mineral plates within the organic polymer matrix. However, recent work has reported nanostructures and organic material within individual plates and associated deformation mechanisms. In this work, we further investigated the nanoscale structure and mechanical behavior within individual plates of nacre by using two methods to induce fracture of plates: microindentation with focused ion beam preparation and ultramicrotomy. Using transmission electron microscopy, we observed deformation nanostructures and organic matrix within plates and identified nanoscale mechanisms, such as separation, shear, and matrix crack bridging.
机译:珍珠质在贝壳中的机械性能通常根据有机聚合物基质内矿物板之间的中尺度机理来描述。但是,最近的工作报道了单个板中的纳米结构和有机材料以及相关的变形机制。在这项工作中,我们通过使用两种方法诱导板的破裂,进一步研究了珍珠质单个板内的纳米级结构和力学行为:聚焦离子束制备的微压痕和超薄切片术。使用透射电子显微镜,我们观察了板内的变形纳米结构和有机基质,并确定了纳米尺度的机制,例如分离,剪切和基质裂纹桥接。

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