Campus Units
Materials Science and Engineering, Wind Energy Science, Engineering and Policy, Ames Laboratory
Document Type
Book Chapter
Publication Version
Published Version
Publication Date
2018
Journal or Book Title
Advances in Powder Metallurgy & Particulate Materials—2018
First Page
151
Last Page
163
Abstract
Deformation processed aluminum/calcium composites are lighter, stronger, and more conductive than conventional overhead power transmission conductors, which gives them the potential to reduce electrical losses, lower costs, and enhance grid reliability. A principal barrier to full strengthening of Al/Ca composites is availability of fine Ca metal power for co-extrusion with commercial Al powder. Calcium powder does not form a protective oxide layer on its surface and must be passivated to ensure safe production and handling. Experiments using an Induction Melting Passivation (IMPass) apparatus developed earlier and used to successfully passivate Mg powder were used to identify appropriate gas mixture and processing conditions for Ca metal. Auger electron spectroscopy (AES), depth profiling, and scanning electron microscopy (SEM) were used to evaluate the passivation characteristics. These findings will allow for lab-scale atomization trials and eventual scale-up allowing safe commercial production of Ca powder.
Copyright Owner
Metal Powder Industries Federation
Copyright Date
2018
Language
en
File Format
application/pdf
Recommended Citation
Czahor, Charles; Riedemann, Trevor; Russell, Alan M.; and Anderson, Iver E., "In-Situ Gas-Phase Passivation of Molten Calcium Surfaces to Enable Development of Atomization Method for Generating Calcium Powder" (2018). Materials Science and Engineering Publications. 372.
https://lib.dr.iastate.edu/mse_pubs/372
Comments
This chapter is published as Czahor, C., Riedemann, T.M., Russell, A.M., Anderson, I.E., “In-Situ Gas-Phase Passivation of Molten Calcium Surfaces to Enable Development of Atomization Method for Generating Calcium Powder,” in Advances in Powder Metallurgy & Particulate Materials—2018, compiled by Animesh Bose and Scott Davis, Metal Powder Industries Federation, 105 College Road East Princeton, NJ, ISBN No. 978-1-943694-18-1, pp. 151-163 (2018). Posted with permission.