A Fundamental Study of Droplet Impingement, Spreading and Consolidation.
Annual rept. 1 Jul 84-30 Jun 85,
DREXEL UNIV PHILADELPHIA PA DEPT OF MATERIALS ENGINEERING
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Spray forming in the Osprey mode is a process in which gas atomized molten metal droplets are interrupted in flight by impingement on a substrate to form a relatively thick deposit. The overall objective of this research program is to develop a fundamental processing science base for the process. To this end, concurrent experimental and modeling studies focus on droplet velocity and temperature profiles, the mechanisms of droplet-substrate interactions, droplet spreading on impact and droplet solidification, and the relationship between process parameters and microstructural integrity of the deposit. On-going experimental studies are reviewed and some preliminary results of the modeling work are presented.
- Industrial Chemistry and Chemical Processing