Effects of Solidification Phenomena on the Distribution of Ceramic Reinforcements during Spray Atomization and Deposition.

摘要

In the present study, the interaction of SiC particulates with the solidification front during spray atomization and deposition processing has been investigated. The present results show that the kinetic and thermodynamic models commonly used to describe the behavior of ceramic particulates during solidification, do not give adequate results when applied to the conditions present during spray atomization and deposition. Instead, a new criterion based on mechanically driven engulfment is proposed. The validity of the latter was established for SiC particulates in an aluminum-lithium matrix using optical microscopy, and image analysis. (JES)