Structure and mechanical properties of silica sponge spicule

被引：1

作者：

Qiao Li ^{[1
]}

Feng Qing-Ling ^{[1
]}

Wang Xiao-Hong ^{[2
]}

Wang Yi-Min ^{[2
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Minist Educ, Key Lab Adv Mat, Beijing 100084, Peoples R China

[2] Natl Res Ctr Geoanal, Beijing 100037, Peoples R China

来源：

JOURNAL OF INORGANIC MATERIALS | 2008年 / 23卷 / 02期

关键词：

sponge spicule; silicon dioxide; hiberarchy; mechanical properties;

D O I：

10.3724/SP.J.1077.2008.00337

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The structure and mechanical properties of silica sponge spicule found in China Bo-hai were studied.. The results show that this spicule has the complex hiberarchy: the first tier is nano silica particles; the second tier is the sub-rounds within one silica round; the third tier is silica rounds composed of several parallel sub-rounds; the fourth tier is homocentric round structure with alternant deposition of silica and organic matrix. The flexural strength of this spicule is 394.34GPa, the flexural modulus increases with the growth direction of rounds. The cross-sectional hardness is 2.933GPa, and the cross-sectional Yang's modulus can reach 33.308CPa.

引用

页码：337 / 340

页数：4

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