Hydrozyapatite-Sheet Parallel Microstructure of Shinbone
Bone is a natural biomaterial. It behaves favorable strength, stiffness and fracture toughness, which are closely related to its eximious microstructure. Scanning Electron Microscope (SEM) observation on a shinbone showed that the bone is a bioceramic composite consisting of laminated hydroxyapatite and collagen matrix. The hydroxyapatite layers are parallel with the surface of the bone and consist of long and thin hydroxyapatite sheets. The observation also showed that the hydroxyapatite sheets in different hydroxyapatite layers also parallel with each other, which composes a hydroxyapatite-sheet parallel microstructure. The maximum pullout energy of the parallel microstructure was investigated based on its representative model. It was shown that the long and thin shape of the hydroxyapatite sheets in the parallel microstructure is profitable to increase the maximum pullout energy and enhance the fracture toughness of the bone.
shinbone hydrozyapatite sheets parallel microstructure mazimum pullout energy fracture toughness
Bin Chen Xiang-he Peng Shi-tao Sun Jing-hong Fan
Department of Engineering Mechanics, College of Resource and Environment Science, Chongqing University, Chongqing 400044, P.R.China
国际会议
第二届国际仿生工程会议(The International Conference of Bionic Engineering 2008)(ICBE08)
长春
英文
9-13
2008-10-10（万方平台首次上网日期，不代表论文的发表时间）