• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Characterization of hydrogen-induced structural changes in Zr-based bulk metallic glasses using positron annihilation spectroscopy
【24h】

Characterization of hydrogen-induced structural changes in Zr-based bulk metallic glasses using positron annihilation spectroscopy

机译：正电子an没光谱法表征Zr基块状金属玻璃中氢诱导的结构变化

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

The effects of hydrogen on the structure of Zr-based bulk metallic glasses were investigated by positron annihilation lifetime spectroscopy. Three lifetime components are identified, indicating the presence of three distinct size ranges for open volume defects in the glass. The concentration of the smallest sites identified as tetrahedral interstitial holes in the densely packed and the intermediate sites identified as flow defects, changes with hydrogen addition. The concentration of tetrahedral interstitial holes in Zr_(55)Cu_(30)Ni_5Al_(10) alloys initially increases with the increase of hydrogen content. When Zr_(55)Cu_(30)Ni_5Al_(10) alloys were prepared in Ar + 10%H_2 atmospheres, the concentration of tetrahedral interstitial holes reaches a maximum, which may provide a more dense random-packed structure. For Zr_(57)Al_(10)Cu_(15.4)Ni_(12.6)Nb_5 alloys, the increase of hydrogen content causes a decrease in the concentration of tetrahedral interstitial holes and an increase in the concentration of flow defects.
机译：通过正电子an没寿命光谱研究了氢对Zr基块状金属玻璃结构的影响。确定了三个使用寿命成分，这表明玻璃中存在三个不同的尺寸范围，以应对开口缺陷。随着氢的添加，在密集堆积中被识别为四面体间隙孔的最小部位的浓度以及被识别为流动缺陷的中间部位的浓度发生变化。 Zr_（55）Cu_（30）Ni_5Al_（10）合金中四面体间隙孔的浓度最初随着氢含量的增加而增加。当在Ar + 10％H_2气氛中制备Zr_（55）Cu_（30）Ni_5Al_（10）合金时，四面体间隙孔的浓度达到最大值，这可能会提供更致密的随机堆积结构。对于Zr_（57）Al_（10）Cu_（15.4）Ni_（12.6）Nb_5合金，氢含量的增加导致四面体间隙孔的浓度降低，并且流动缺陷的浓度增加。

著录项

  • 来源
    《Journal of Materials Research》 |2012年第20期|p.2587-2592|共6页
  • 作者

    Fuyu Dong; Yanqing Su; Liangshun Luo; Jingjie Guo; Hengzhi Fu; Zhuoxi Li; Baoyi Wang;

  • 作者单位

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

    School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;

    Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, Chinese Academy of Sciences,Beijing 100049, China;

    Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, Chinese Academy of Sciences,Beijing 100049, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 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