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[期刊论文]

Calculations of Formation Enthalpies of Al-RE Intermetallics

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作者:

Wang Wei (Wang Wei.) (学者:王伟) | Tang Zhenlei (Tang Zhenlei.) | Zhan Chunyao (Zhan Chunyao.) | 展开

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EI Scopus SCIE PKU CSCD

摘要:

The error distribution between Miedema-calculated values and reference-reported values for formation enthalpies of binary Al-RE intermetallics was analyzed and it is known that the calculated results are commonly negative compared with those in references. Therefore, an important influencing factor, radius ratio of RE atom to aluminum atom should be considered to modify the thermodynamic calculation model in the study. The calculation results of the modified model are more closed to the reported experiment results and the error was found to be reduced from 33.6% to 5%. The enthalpies of some common intermetallics of aluminum and rare earth were also checked by MTDATA for comparison. All that proved the modified calculating model are much more accurate and reliable. The common formation enthalpies of intermetallics of aluminum and rare earth as well as Al-Er, Al-Tb, Al-Gd, which are studied less, are calculated by the modified Miedema model.

关键词:

Miedema model MTDATA formation enthalpy intermetallics of aluminum and rare earth thermodynamic calculation

作者机构:

  • [ 1 ] [Wang Wei]Beijing Univ Technol, Beijing 100022, Peoples R China
  • [ 2 ] [Tang Zhenlei]Beijing Univ Technol, Beijing 100022, Peoples R China
  • [ 3 ] [Zhan Chunyao]Beijing Univ Technol, Beijing 100022, Peoples R China
  • [ 4 ] [Nie Zuoren]Beijing Univ Technol, Beijing 100022, Peoples R China

通讯作者信息:

  • 王伟

    [Wang Wei]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

电子邮件地址:

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来源 :

RARE METAL MATERIALS AND ENGINEERING

ISSN: 1002-185X

年份: 2009

期: 12

卷: 38

页码: 2100-2105

0 . 7 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

JCR分区:4

中科院分区:1

被引次数:

WoS核心集被引频次: 4

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