文献类型：会议论文

英文题名：Study of the influence of rear earth elements on microstructure of pearl surface observed by SEM

作者：Shi, Weilin[1]; Jin, Yefei[2]; Ge, Yao[1]

机构：[1] School of Environmental Science and Engineer, Suzhou University of Sciences and Technology, Suzhou, Jiangsu, 215009, China; [2] School of Life Sciences, Shaoxing University, Shaoxing 312000, Zhejiang, China

会议论文集：Environment Science and Materials Engineering

会议日期：August 4, 2012 - August 4, 2012

会议地点：Wuhan, China

语种：英文

外文关键词：Carbonate minerals - Crystallography - Microstructure - Rare earth elements - Surfaces

外文摘要：We investigated the influence of rare earth element (REE) Ce on the surface microstructure of bivalves pearl in the scaled of micro and nanometer range by means of scanning electronic microscopy (SEM). And we discussed the relevant of surface microstructure and lustrous of pearls to the concentration of REE in culture water by analyzing the influence of additive REE on the surface microstructure. We found that pseudo-hexagonal relatively grow slowly when REE Ce was absent in the culturing water, and the pearls surface were mainly build up by spindly aragonite blocks. On the contrary, the pearls grow quickly when REE was added in the culturing water, and the pearls surface were chiefly composed of regular hexagonal aragonite blocks that is the most idea blocks in crystallography. The results show that an appropriate quantity of Ce will promote the development and growth of pearls, and enhanced the lustrous of pearls significantly. However, as the REE concentration is large, the blocks composed of pearls became to around, and oval dics, thus leading the roughness increasing of pearls surface and the lustrous decrease. ? (2012) Trans Tech Publications, Switzerland.