Mechanical properties of nacre and highly mineralized bone
Mechanical properties of nacre and highly mineralized bone
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DOI：
10.1098/rspb.2000.1337
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发表时间：
2001-01-07
影响因子：
4.7
通讯作者：
Casinos, A
中科院分区：
文献类型：
--
作者：
Currey, JD;Zioupos, P;Casinos, A
我们比较了“普通”牛骨、鲸鱼 Mesoplodon densirostris 的喙部高度矿化的骨以及珍珠贝 Pinctada margaritifera 的珍珠母（珍珠层）的机械特性。讲台和珍珠质的相似之处在于有机物质很少。然而，头骨比珍珠质更脆弱、更脆，在这些特性上与普通骨接近。珍珠质优于头骨的能力是其极其有序的微观结构的结果，有机材料在所有微小的文石板周围形成几乎连续的护套，这种设计非常适合产生韧性。相比之下，在讲台中，有机材料（主要是胶原蛋白）组织不良且不连续，使得矿物质实际上结合在一起形成脆性石质材料。
We compared the mechanical properties of 'ordinary' bovine bone, the highly mineralized bone of the rostrum of the whale Mesoplodon densirostris, and mother of pearl (nacre) of the pearl oyster Pinctada margaritifera. The rostrum and the nacre are similar in having very little organic material. However, the rostral bone is much weaker and more brittle than nacre, which in these properties is close to ordinary bone. The ability of nacre to outperform rostral bone is the result of its extremely well-ordered microstructure, with organic material forming a nearly continuous jacket round all the tiny aragonite plates, a design well adapted to produce toughness. In contrast, in the rostrum the organic material, mainly collagen, is poorly organized and discontinuous, allowing the mineral to join up to form, in effect, a brittle stony material.