A microstructural investigation of gas atomized Raney type Al-27.5 at.% Ni catalyst precursor alloys

A.M. Mullis, T.D. Bigg, Nicholas Adkins

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14 Citations (Scopus)
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Abstract

Quantitative image analysis has been used to investigate the phase composition of gas atomized powders of a Raney type Ni catalyst precursor alloys of composition Al-27.5 at.% Ni in the powder size range 150–212 μm. We find that there are considerable variations in phase composition both between powders from the same batch and as a function distance from the particle surface within individual particles. Such variations may have significant implications for the future production and uptake of such catalysts, including the necessity for post-production crushing of gas atomized powders. Models are proposed to account for both variations.
Original languageEnglish
Pages (from-to)139-148
JournalJournal of Alloys and Compounds
Volume648
Early online date19 Jun 2015
DOIs
Publication statusPublished - 5 Nov 2015

Keywords

  • Raney-type nickel catalysts
  • Nickel aluminium alloy
  • Gas atomisation process

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