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Limitations of Particle Characterisation and Simple Flow Measurement for Bulk Powder Characterisation

This work involved the application of a hydrophobic surface coating to fine aluminium particles and extensive characterisation of the resulting materials. The data illustrate how powder flow properties can be substantially altered, with negligible changes in particle size, and demonstrate the limitations of simple flow measurement techniques for assessing how changes in flowability will impact process performance.

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Characterising Iron Alloy Powders to Optimise Near-Net Shape Manufacturing

This paper presents the results of a study to investigate how the flow properties of several iron based alloys, produced using different manufacturing methods, influences performance in a Cold Isostatic Pressing (CIP) process.

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Investigation of the Influence of Atomic Layer Deposition Coatings on Powder Rheology

The current economic climate necessitates the reduction in the costs of industrial manufacturing processes while maintaining high productivity and product quality. In this study, direct evidence of the effect of the nanoscale ceramic coatings is shown via a significant improvement in flow properties of dry particles, including dynamic, bulk and shear properties obtained using a FT4 Powder Rheometer, and a marked reduction in slurry viscosity at high solid loads.

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Characterisation of Powder Bulk, Dynamic Flow and Shear Properties in Relation to Die Filling

The bulk, dynamic flow and shear properties of tungsten, aluminium and two types of glass beads are investigated and correlated with the ability to fill a die. The results show how effectiveness of die filling correlates well with many powder properties and how entrained air is a critical factor.

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