学位：博士
职称：教授
所在单位：材料科学与工程学院
长期从事金属材料蠕变、组织演化、损伤及寿命预测工作。主持和参加国家自然科学基金重点和面上项目6项，“863”计划课题2项，省部级及企业项目20余项。获国家发明专利5项，发表学术论文200余篇。出版专著“耐热钢持久性能的统计分析及可靠性预测”1部（科学出版社），译著“高温合金”1部，编著1部。获辽宁省教学名师，宝钢教育奖优秀教师奖。辽宁省教学成果一等奖1项，国家本科一流课程、国家精品在线开放课程负责人。Emerald出版社颁发的学术奖“Literati Club Awards for Excellence”，金属学报2009-2015年度优秀论文奖。省部级科技奖励一等奖、二等奖5项。
The Micro/Nanostructure Characteristics and the Mechanical Properties of Hemifusus tuba Conch Shell
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论文类型：期刊论文
发表时间：2010-12-01
发表刊物：JOURNAL OF BIONIC ENGINEERING
收录刊物：SCIE、EI、Scopus
卷号：7
期号：4
页面范围：307-313
ISSN号：1672-6529
关键字：conch shell; microstructure; aragonite; calcite; crossed-lamellar
摘要：The mollusk shell mobilizes calcium from environment for skeletal mineralization. This occurs through synthesizing solids in solution in the presence of organic molecules of specific interior regions of the conch shell. The ultrastructure and microhardness of the Hemifusus tuba conch shell living in the Huang/Bo sea area are investigated in the paper. It is shown that the composition and microstructure of the mollusk shell vary in different positions. The prodissoconch shell consists only of aragonite with the crossed-lamellar microstructure. While the spiral shell and the body shell of the Hemifusus tuba conch shell are composed of one calcite layer and several aragonite layers. The calcite layer consists of cylindrical grains, but the aragonite layers are crossed-lamellar ultrastructure at three size scales. The minimum structure size (the third-order lamella) is at about 20 nm - 80 nm. The margin of shell aperture is only composed of calcite with cylindrical grains. This natural optimization of the shell microstructure is intimately due to the growth of the organic matrix. At different positions the microhardness of mollusc shell is different due to different crystal structures and crystal arrangements. The growth process of shells allows a constant renewal of the material, thus enabling their functional adaptation to external environments.
发表时间：2010-12-01
