Lattice relaxation in Ni-P amorphous alloy accompanied with growth of Ni3P nanocrystals

Shun Ichiro Tanaka, Jun Takioto, Sang Koo Kwon, Kozo Shinoda, Shigeru Suzuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Studies on lattice change of a nickel-phosphorus amorphous alloy were carried out using not only high temperature X-ray diffraction but also extended X-ray absorption fine structure (EXAFS) analysis. Their thermal properties were characterized by differential scanning calorimetry (DSC). Since the results suggested that lattice relaxation occurred in the amorphous state by annealing, EXAFS measurements were carefully performed for characterizing the local structure of the amorphous alloys. The EXAFS analysis showed that the local structures around Ni atoms, which may be the Ni-Ni and Ni-P correlation, were changed by annealing. High temperature X-ray diffraction showed that small amount of crystal phase appeared by annealing up to 820 K, while clear diffraction peaks of Ni3P were observed above 1100 K. These micro/nanoscale structural changes did not correspond to that obtained by DSC which showed an exothermic reaction of atomistic reordering at 630 K. We need analysis of the nanostructures by small angle X-ray scattering or a high resolution transmission electron microscope.

Original languageEnglish
Title of host publicationRecrystallization and Grain Growth III - Proceedings of the Third International Conference on Recrystallization and Grain Growth, ReX and GG III
PublisherTrans Tech Publications Ltd
Pages1363-1366
Number of pages4
EditionPART 2
ISBN (Print)087849443X, 9780878494439
DOIs
Publication statusPublished - 2007 Jan 1
Event3rd International Conference on Recrystallization and Grain Growth, ReX GG III - Jeju Island, Korea, Republic of
Duration: 2007 Jun 102007 Jun 15

Publication series

NameMaterials Science Forum
NumberPART 2
Volume558-559
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other3rd International Conference on Recrystallization and Grain Growth, ReX GG III
CountryKorea, Republic of
CityJeju Island
Period07/6/1007/6/15

Keywords

  • Amorphous alloy
  • DSC
  • EXAFS
  • Nanocrystal
  • Ni-P
  • NiP
  • TEM
  • XRD

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Lattice relaxation in Ni-P amorphous alloy accompanied with growth of Ni<sub>3</sub>P nanocrystals'. Together they form a unique fingerprint.

Cite this