Local structure of NiPd solid solution alloys and its response to ion irradiation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

1 Scopus Citations
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Author(s)

  • F. X. Zhang
  • Mohammad W. Ullah
  • Ke Jin
  • Y. Tong
  • G. Velisa
  • H. Xue
  • H. Bei
  • R. Huang
  • C. Park
  • W. J. Weber
  • Yanwen Zhang

Detail(s)

Original languageEnglish
Pages (from-to)242-250
Journal / PublicationJournal of Alloys and Compounds
Volume755
Early online date27 Apr 2018
Publication statusPublished - 30 Jul 2018
Externally publishedYes

Abstract

The local structure of Ni-Pd solid solution alloys with compositions of Ni80Pd20 and Ni50Pd50 was investigated with anomalous X-ray diffraction, X-ray absorption and theoretical calculation/simulation. The fcc lattice is distorted for both alloys, and the Pd-Pd atomic pair distance is +4.4% and +1.4% larger than ideal values in Ni80Pd20 and Ni50Pd50 alloys, respectively. The corresponding atomic pair distance of Ni-Ni is −1.8% and −3.0% less than the ideal values. Different short-range orders in the alloys were quantitatively identified at the atomic level. In Ni80Pd20, Pd atoms are likely to form Pd-Pd pairs, while Pd atoms are connected with Pd atoms in the second shell in the equiatomic solid solution alloy. Upon ion irradiation, little change of interatomic distance, but modification of chemical short-range order was observed. The number of Pd-Pd pairs decreases to the lowest value at 0.1 dpa, and further irradiation make it increase.

Citation Format(s)

Local structure of NiPd solid solution alloys and its response to ion irradiation. / Zhang, F. X.; Ullah, Mohammad W.; Zhao, Shijun; Jin, Ke; Tong, Y.; Velisa, G.; Xue, H.; Bei, H.; Huang, R.; Park, C.; Weber, W. J.; Zhang, Yanwen.

In: Journal of Alloys and Compounds, Vol. 755, 30.07.2018, p. 242-250.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review