摘要
本文以我国黄渤海地区的香螺为对象 ,研究了其结构及组织形态特征。研究表明 :香螺壳体主要由方解石构成 ,其次为具有正交晶系结构的文石。香螺壳体的纵截面由外层的柱状晶粒结构层 ,中间的交错纹片结构层和内层的柱状结构层组成。外层和中间层主要由方解石组成 ,内层由方解石和文石构成。显微硬度测试结果表明 :香螺壳体的硬度从外层到内层是逐渐增加的 ,说明内层的致密度比中层和外层的高。
The current paper investigated the structure characteristics of the shell of the conch Hemifusus tuba. It is indicated that the shell is composed of calcite with Rhombohedral structure as well as aragonite with Orthorhombic structure. The analysis for a vertical section demonstrates that the shell consists of three layers: the out layer with column grain structure, middle layer with lathing structure and inner layer with column structure. From XRD diffraction for various layers, it is found that the outer layer and middle layer are composed of calcite, while the inner layer is composed of a mixture of calcite and aragonite. The hardness of inner layer is higher than both out layer and middle layer.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2004年第5期644-646,共3页
Journal of Materials Science and Engineering
关键词
香螺
结构
方解石
文石
conch
structure
calcite
aragonite
