CAJ | 학술논문

使用扫描电镜(SEM)观察了文蛤贝壳的微结构.结果显示:文哈贝壳是一种由无机霰石和有机胶原质组成的多级生物陶瓷复合材料.贝壳由平行的霰石层组成,每一霰石层由长而薄的霰石片所组成,每一霰石片又是由直径在纳米尺度的霰石纤维组成;在不同霰石层中的霰石纤维具有不同的方向,它们构成一种螺旋交叉微结构.对螺旋交叉微结构和平行微结构进行了与材料断裂韧性有关的最大拔出力的比较分析,结果表明:螺旋交叉微结构的最大拔出力明显大于平行微结构的最大拔出力,螺旋交叉角越大,拔出力的差值也越大.
사용소묘전경(SEM)관찰료문합패각적미결구.결과현시:문합패각시일충유무궤산석화유궤효원질조성적다급생물도자복합재료.패각유평행적산석층조성,매일산석층유장이박적산석편소조성,매일산석편우시유직경재납미척도적산석섬유조성;재불동산석층중적산석섬유구유불동적방향,타문구성일충라선교차미결구.대라선교차미결구화평행미결구진행료여재료단렬인성유관적최대발출력적비교분석,결과표명:라선교차미결구적최대발출력명현대우평행미결구적최대발출력,라선교차각월대,발출력적차치야월대.
The microstructures of a Mactra Sulcataria shell were observed with a scanning electronic microscope (SEM). It shows that the shell is a kind of hierarchical bioceramic composite consisting of aragonite and collagen matters. The shell consists of parallel aragonite layers which are composed of thin and long aragonite sheets. The aragonite sheets consist further of aragonite fibers whose diameter is in nanometer scale. The SEM observation also showed that the aragonite sheets in different aragonite layers are of different orientations, which compose a kind of corkscrew cross microstructure. A comparative analysis of the maximal pullout forces between the corkscrew cross and parallel microstructures was conducted. It shows that the maximal pullout force of the corkscrew cross microstructure is markedly larger than that of the parallel microstructure. The larger the crossed angle of the corkscrew microstructure is, the larger the difference of the maximal pullout forces is.