与人造无机材料相比，海洋生物无机材料具有优越的性能，这与它们精美的矿物构造有关，因此对海洋生物矿物结构的仿生研究对制备高性能陶瓷材料具有指导性意义。本课题将结合先进的测试方法（Micro-CT、原位拉伸装置、背散射衍射仪等）对海胆、珊瑚硬组织的孔隙率、孔隙结构、矿物组成、微观力学响应等进行表征。探索海胆（珊瑚）骨骼的几何结构特点随X轴（主轴）的变化规律，建立数学关系和有限元模型，模拟预测其力学性能与组织结构的关系，并与Micro-CT扫描的实体三维模型进行比较。同时，使用原位拉伸（压缩）装置观测这些多孔材料真实应力下应变、结构的变化，并与计算结果分析比较，探索其结构与力学响应的定量关系，以确定无机网络结构特点与其力学性能之间的联系，为海胆壳骨型或珊瑚骨型填充状两相复合材料的设计提供可靠的仿生学依据。

Inorganic materials derived from marine organisms always have superior performances when compared with their artificially synthetic counterparts because of their fine structures. So the structural bionics of the marine mineral has guiding significance for the preparation of high performance ceramic materials. In this project, the porosity, pore structure, mineral composition and micro-mechanical response of sea urchins and coral inorganics will be characterized by some state-of-art techniques (Micro - CT, back scattering diffraction of SEM, in situ loading device, etc.). The finite element model will be built based on the geometric parameters of sea urchin (coral) bones along the X axis (principal axis)，which will be used to simulate the relationship between their space structures and mechanical properties, and will be compared to the stress analysis resulting from the three dimensional structure obtained by scanning using Micro-CT. Meanwhile, the in situ tension (compression) loading device will be employed to explore the quantitative relationship between the structure and mechanical response of the bones through measuring the strain and the microstructure change of the porous material under stress. The dependence of mechanical properties upon the inorganic network structure will be fully determined, providing reliable support for bionics design of filling composites based on the characters of sea urchin shell bone or the coral bone.