A study of nanocrystalline nickel powders developed via high-energy ball milling

Bukola Joseph Babalola, Mxolisi Brendon Shongwe, Azeez Lawan Rominiyi, Samson Olaitan Jeje, Peter Apata Olubambi

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Nanocrystalline nickel powder from pure nickel with an initial particle size of 4–7 μm was fabricated using high-energy ball mill technique at different milling parameters. The resulting milled slurries were dried and characterized with the aid X-ray diffraction and scanning electron microscopy. The X-ray diffraction (XRD) results show that nanocrystalline size of 7.867 nm and 8.866 nm were attained after 10 h milling at constant ball-to-powder weight ratio (BPR), and 20:1 BPR at constant milling time respectively. Nanocrystalline size of the nickel powder was observed to reduce as the milling time increases under constant BPR. However, drastic reduction to nanosize was obtained within short duration when the BPR increases. The microstructural orientation with respect to BPR and milling time variations were exhaustively discussed which was characterized by cold welding and fracturing of the powders.

Original languageEnglish
Pages (from-to)3657-3665
Number of pages9
JournalInternational Journal of Advanced Manufacturing Technology
Volume102
Issue number9-12
DOIs
Publication statusPublished - 19 Jun 2019

Keywords

  • Deformation
  • High energy ball milling
  • Microstructure
  • Nanocrystalline nickel
  • X-ray diffraction

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

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