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题名: Mechanical properties of crossed-lamellar structures in biological shells: A review
作者: Li, X. W.;  Ji, H. M.;  Yang, W.;  Zhang, G. P.;  Chen, D. L.
发表日期: 2017-10-1
摘要: The self-fabrication of materials in nature offers an alternate and powerful solution towards the grand challenge of designing advanced structural materials, where strength and toughness are always mutually exclusive. Crossed-lamellar structures are the most common microstructures in mollusks that are composed of aragonites and a small amount of organic materials. Such a distinctive composite structure has a fracture toughness being much higher than that of pure carbonate mineral. These structures exhibiting complex hierarchical micro-architectures that span several sub-level lamellae from microscale down to nanoscale, can be grouped into two types, i.e., platelet-like and fiber-like crossed-lamellar structures based on the shapes of basic building blocks. It has been demonstrated that these structures have a great potential to strengthen themselves during deformation. The observed underlying toughening mechanisms include microcracking, channel cracking, interlocking, uncracked-ligament bridging, aragonite fiber bridging, crack deflection and zig-zag, etc., which play vital roles in enhancing the fracture resistance of shells with the crossed-lamellar structures. The exploration and utilization of these important toughening mechanisms have attracted keen interests of materials scientists since they pave the way for the development of bio-inspired advanced composite materials for load-bearing structural applications. This article is aimed to review the characteristics of hierarchical structures and the mechanical properties of two kinds of crossed-lamellar structures, and further summarize the latest advances and biomimetic applications based on the unique crossed-lamellar structures.
刊名: ELSEVIER SCIENCE BV
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
Li, X. W.,Ji, H. M.,Yang, W.,et al. Mechanical Properties Of Crossed-lamellar Structures In Biological Shells: A Review[J]. Elsevier Science Bv,2017,74:54-71.

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