NUCLEATION DURING THE SOLIDIFICATION OF ATOMIZED DROPLETS CATALYZED BY SPHERICALLY-SHAPED OXIDE PARTICLES.

Matthew R. Libera*, Gregory B. Olson, John B. Vander Sande

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nucleation temperatures are calculated for the case of solidification in atomized metal droplets where spherical substrate particles act as nucleation catalysts. Following the method of Fletcher, the effect of substrate size on catalytic potency is illustrated, and the model is applied to the nucleation of bcc solid from pure, liquid iron containing oxide substrate particles as catalysts. Supercooling data from the literature are used to determine wetting angles for alumina, silica, and rare-earth oxide. Oxide particle-size distributions are then used to predict the supercooling behavior of atomized liquid droplets based on the probability that a given size of droplet will contain a particular size of substrate particle. A transition size regime is found separating droplet sizes undergoing very small and very large supercoolings, respectively. This is discussed in terms of the types and number densities of inclusions present during atomization of the melt.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposia Proceedings
EditorsM. Tenhover, W.L. Johnson, L.E. Tanner
PublisherMaterials Research Soc
Pages245-252
Number of pages8
ISBN (Print)0931837456
StatePublished - Dec 1 1987

Publication series

NameMaterials Research Society Symposia Proceedings
Volume80
ISSN (Print)0272-9172

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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    Libera, M. R., Olson, G. B., & Vander Sande, J. B. (1987). NUCLEATION DURING THE SOLIDIFICATION OF ATOMIZED DROPLETS CATALYZED BY SPHERICALLY-SHAPED OXIDE PARTICLES. In M. Tenhover, W. L. Johnson, & L. E. Tanner (Eds.), Materials Research Society Symposia Proceedings (pp. 245-252). (Materials Research Society Symposia Proceedings; Vol. 80). Materials Research Soc.