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Meeting Materials Science & Technology 2019
Symposium Additive Manufacturing: Effective Production, Characterization, and Recycling of Powder Materials
Presentation Title Surface Area as a Powder Morphology Probe
Author(s) Dave van der Wiel
On-Site Speaker (Planned) Dave van der Wiel
Abstract Scope Gas adsorption methods for the analysis of surface area is a well-established technique that is used to characterize surface properties of materials in powder, aggregate or shaped forms. The method is also extended via gas desorption to characterize the porosity of porous materials. However, for materials with low or no porosity, gas adsorption offers a unique way to provide three-dimensional morphological information. The method has many advantages over conventional morphology techniques, many of which rely on indirect measurements, limited sample sizes and/or two-dimensional representation of particles. Similarly, rheological techniques are common across many industries to quantify the fluidic behavior of materials. Conventional methods for characterizing powder flow often provide hit-or-miss results, with one method or parameter being useful for one material and useless for another. In contrast to other techniques, avalanche/drum rheometers examine powder behavior under dynamic conditions, more closely resembling the state of powders during various manufacturing processes.
Proceedings Inclusion? Planned: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing Alloys: Influence of Powder Preparation Method in Aluminum Matrix Composites
Assessment of 316L Stainless Steel Powder Produced from Recycled Machining Chips for Closed Lifecycle Additive-Subtractive Manufacturing
Characterization of Gas Atomized Aluminum Alloy Powder for Additive Manufacturing Applications
Characterization of Nickel-base Superalloy MAR-M247 Powders by Synchrotron X-ray Computed Tomography
Characterization of Titanium Powder Produced from Battlefield Scrap for Additive Manufacturing
Determination of Viscosity of Metal Melts by High Temperature Rheometry
Effects of Recycling PREP and Plasma Atomized Ti-6Al-4V Powder from LENS Process
Exploring the Feasibility of Cryomilled Aluminum Alloy 5083 as Feed Stock Material for Additive Manufacturing
Hydrogen Assisted Magnesiothermic Reduction (HAMR) for Making Low-oxygen Ti Powder
Metal Particulate Produced by Modulation-assisted Machining
P3-26: Identifying Correlations between Metal Powder Properties and Binder Jet Print Settings to Optimize Process
Potentials and Risks in Hybrid Manufacturing
Powder Specification Needs for Steels in the LPBF Process
Surface Area as a Powder Morphology Probe
Synchrotron X-ray CT of AM Feedstock Metal Powder: A Validation of Metallographic Porosity Measurements.
Understanding Powder Morphology and Its Effect on Flowability through Computer Vision and Machine Learning In Additive Manufacturing
Understanding Surface Area Measurement for Improved Powder Characterization

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