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 language | English |
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Pages (from-to) | 139-148 |
Journal | Journal of Alloys and Compounds |
Volume | 648 |
Early online date | 19 Jun 2015 |
DOIs | |
Publication status | Published - 5 Nov 2015 |
Keywords
- Raney-type nickel catalysts
- Nickel aluminium alloy
- Gas atomisation process