• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Advances in X-ray analysis (ICDD2001) >DEVELOPMENT OF MgO CERAMIC STANDARDS FOR X-RAY AND NEUTRON LINE BROADENING ASSESSMENTS
【24h】

DEVELOPMENT OF MgO CERAMIC STANDARDS FOR X-RAY AND NEUTRON LINE BROADENING ASSESSMENTS

机译：用于X射线和中子线膨胀评估的MgO陶瓷标准的开发

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An MgO ceramic line profile standard has been developed for strain-size evaluations with x-ray diffraction (XRD) and neutron diffraction (ND) data. The production of these is of interest to the authors for general-purpose XRD and ND line profile work as the popular LaB_6 NIST SRM 660 standard cannot be used in neutron investigations due the severity of neutron attenuation. The basis of developing the MgO standard was achieving strain relief through sintering at a designated temperature and slow annealing during cooling. A series of MgO sintering trials was conducted to establish the relationship between line profile shape and sintering conditions. An MgO ceramic sintered at 1450℃ for 2 hours displayed comparable Bragg-Brentano XRD broadening with that of the LaB_6 NIST standard. The XRD Williamson-Hall plots for both materials showed negative slopes indicating that both have minimal strain. Crystallite size broadening is also minimal for the MgO and LaB_6 standards, according to XRD Rietveld analyses and electron microscopy imaging. These results confirm that the MgO ceramic is suitable for line broadening corrections with both XRD and ND data.
机译：已开发出MgO陶瓷线轮廓标准，用于通过X射线衍射（XRD）和中子衍射（ND）数据进行应变尺寸评估。作者对于通用XRD和ND谱线工作很感兴趣，因为流行的LaB_6 NIST SRM 660标准由于中子衰减的严重性而不能用于中子研究。制定MgO标准的基础是通过在指定温度下烧结并在冷却过程中缓慢退火来实现应变消除。进行了一系列的MgO烧结试验，以建立线轮廓形状和烧结条件之间的关系。在1450℃下烧结2小时的MgO陶瓷表现出与LaB_6 NIST标准相当的Bragg-Brentano XRD增宽。两种材料的XRD Williamson-Hall图均显示负斜率，表明它们均具有最小应变。根据XRD Rietveld分析和电子显微镜成像，对于MgO和LaB_6标准，微晶尺寸增宽也很小。这些结果证实，MgO陶瓷适用于XRD和ND数据的线宽校正。

著录项

  • 来源
  • 会议地点 Steamboat Springs CO(US);Steamboat Springs CO(US);Steamboat Springs CO(US)
  • 作者

    Suminar Pratapa; Brian OConnor;

  • 作者单位

    Materials Research Group, Department of Applied Physics Curtin University of Technology, Perth, WA 6845 Australia;

    rnMaterials Research Group, Department of Applied Physics Curtin University of Technology, Perth, WA 6845 Australia;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 X射线、紫外线、红外线;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号