Principles of Atomization

  • W. A. Kaysser
  • K. Rzesnitzek

Abstract

Basic principles of materials science and physics which apply to the formation and solidification of small droplets during gas and water atomization of metals and alloys are described. Several mechanisms of melt stream disintegration are presented, including melt stripping and subsequent disintegration due to Taylor instabilities. The cooling rates of the droplets and the extent of undercooling are estimated. Some aspects of homogeneous and heterogeneous nucleation as well as the microstructural variations caused by different solidification front velocities are outlined and compared with experiments with Cu—Sn alloys.

Keywords

Heat Transfer Coefficient Growth Velocity Rapid Solidification Biot Number Taylor Instability 
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Copyright information

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • W. A. Kaysser
    • 1
  • K. Rzesnitzek
    • 1
  1. 1.Pulvermetallurgisches LaboratoriumMax—Planck—Institut für MetallforschungStuttgart 80Germany

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