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Laves相Cr2 Nb中棱锥面层错结构的像差矫正电子显微学分析
  • ISSN号：1000-6281
  • 期刊名称：《电子显微学报》
  • 时间：0
  • 分类：O614[理学—无机化学;理学—化学] TG115.215.3[金属学及工艺—物理冶金;金属学及工艺—金属学]
  • 作者机构：[1]中国科学院金属研究所沈阳材料科学国家(联合)实验室,辽宁沈阳110016, [2]清华大学北京国家电镜中心,北京100084, [3]北京大学深圳研究院,广东深圳518057
  • 相关基金：973项目（2012CB619503）; 国家自然科学基金资助项目（Nos.51221264,51171188）
作者： 章炜[1,2], 杜奎[1,2], 盛立远[3], 叶恒强[1]
关键词： LAVES相, 金属间化合物, Cr2Nb, 层错, 像差矫正高分辨透射电镜, Laves phase, intermetallic compounds, Cr2Nb, stacking fauh, aberration-corrected high-resolution transmission electronmicroscopy
中文摘要：

本文利用像差矫正透射电子显微镜,在具有C14结构的Laves相Cr2Nb中观察到两种新型的（1101）棱锥面层错结构,并对这些层错的精细构型进行了分析。结果表明：这两种棱锥面层错具有形状特异的结构单元,同时原有的Laves相中的原子配位数也发生改变,在其中一种层错内还形成了拓扑密堆相中不常见的13配位数。这两种新的堆垛方式丰富了对拓扑密堆相中缺陷结构的认识。

英文摘要：

By using aberration-corrected high-resolution transmission electron microscopy, two types of novel stacking faults on （1101） pyramidal planes in C14 Laves phase Cr2Nb were investigated. The results show that these two stacking faults possess abnormal shapes of building blocks. Furthermore, the original coordination numbers of atoms in the C14 Laves phase have been changed, and a CN13 coordination number is formed in the stacking faults, which is rarely reported in TCP phases. These new defect structures would enrich our understanding of the structure of TCP phases.

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期刊信息
  • 《电子显微学报》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国物理学会
  • 主编：张 泽
  • 地址：北京市海淀区中关村北二条13号5号楼301
  • 邮编：100190
  • 邮箱：dzxwxb@blem.ac.cn
  • 电话：010-82671519 62565522/3301
  • 国际标准刊号：ISSN：1000-6281
  • 国内统一刊号：ISSN：11-2295/TN
  • 邮发代号:
  • 获奖情况:
  • 曾获《中国科技论文统计源期刊（中国科技核心期刊）》,《中国科学引文数据库(核心库)》来源期刊,中国自然科学核心期刊（无线电电子学、电信技术类...
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  • 美国化学文摘（网络版）,英国科学文摘数据库,中国中国科技核心期刊,中国北大核心期刊（2008版）,中国北大核心期刊（2000版）
  • 被引量:6569