1
J J Dunkley, Sh M Sheikhaliev, ‘Single Fluid Atomisation of Liquid Metals’ (Advances in Powder Metallurgy & Particulate Materials, Vol 1, 1995, pp 79-87).
Atomisation of metal powders using only pressure in a jet. An idea of Russian co-worker, Professor Sheikhaliev of Novouralsk developed by ASL for large scale production.
2
Sheikhail M Sheikhaliev, John J Dunkley, ‘A Novel Internal Mixing Gas Atomiser for Fine Powder Production’ (Advances in Powder Metallurgy & Particulate Materials, Vol 1 Part 1, 1996, pp 161-170).
Work by Professor Sheikhaliev on a gas atomising nozzle with internal mixing which showed gas consumption was reduced by an order of magnitude compared to a close coupled design.
3
J J Dunkley and S M Sheikhaliev, ‘Novel Atomising Methods for Powder Production of Non-Ferrous Metals’ (Proceedings of International Non-Ferrous Processing and Technology Conference, 1997, pp 31-35).
Two unconventional processes for powder atomisation are reviewed, pressure nozzle atomisation and internal mixing nozzle atomisation.
4
John J Dunkley, ‘Recent Experience of Water Atomisation’ (Advances in Powder Metallurgy & Particulate Materials, 1998, pp 10/70-10/76).
A review of some major projects or concepts by ASL including iron powder production using induction melting of scrap, Silver powder atomised at 500bars for electrical contact production, stainless steel powders for sintering, and smelter mattes, for leaching or flash refining.
5
John J Dunkley, ‘Gas Atomization, A Review of the Current State of the Art’ (Advances in Powder Metallurgy & Particulate Materials, Vol 1, 1999, pp 1-12).
A review of gas atomising nozzle designs including free-fall, close-coupled, internal mixing, Nanoval, hot gas, hyperbaric and high pressure gas atomisation.
6
J T Strauss, J J Dunkley, ‘An Experimental and Empirical Study of Close-Coupled Gas Atomisation’ (Proceedings of Powder Metallurgy World Congress, Part 1, 2000, pp 347-350).
Data and theory are presented on the use of heated gas, the use of different gases, and the effects of gas flowrate and pressure.
7
J J Dunkley, ‘The Role of Energy in Gas Atomisation’ (Advances in Powder Metallurgy & Particulate Materials, Part 2, 2001, pp 29-35).
Data and theory on the effect of gas/metal ratio on particle size, taking account of the effects of the heating of the atomising gas by the melt. The effects of superheat on particle size due to gas heating by the melt are discussed.
8
J J Dunkley, ‘An Analysis of the Gas Atomisation Process’ (Proceedings of the Nice European Congress and Exhibition on Powder Metallurgy, Vol 4, 2001, pp 99-104).
Further discussion of the effects of gas properties and gas/metal ratio, which it is proposed should be reported on a volume/volume basis, not mass/mass.