TY - JOUR

T1 - Investigation of Peritectic Solidification Morphologies by Using the Binary Organic Model System TRIS-NPG

AU - Mogeritsch, Johann

AU - Abdi, Mehran

AU - Ludwig, Andreas

N1 - Publisher Copyright: © 2020 by the authors.

PY - 2020/2/21

Y1 - 2020/2/21

N2 - Under pure diffusive growth conditions, layered peritectic solidification is possible. In reality, the competitive growth of the primary α-phase and the peritectic β-phase revealed some complex peritectic solidification morphologies due to thermo-solutal convection. The binary organic components Tris-(hydroxylmenthyl) aminomethane-(Neopentylglycol) were used as a model system for metal-like solidification. The transparency of the high-temperature non-faceted phases allows for the studying of the dynamic of the solid/liquid interface that lead to peritectic solidification morphologies. Investigations were carried out by using the Bridgman technic for process conditions where one or both phases solidify in a non-planar manner. Different growth conditions were observed, leeding to competitive peritectic growth morphologies. Additionally, the competitive growth was solved numerically to interpret the observed transparent solidification patterns.

AB - Under pure diffusive growth conditions, layered peritectic solidification is possible. In reality, the competitive growth of the primary α-phase and the peritectic β-phase revealed some complex peritectic solidification morphologies due to thermo-solutal convection. The binary organic components Tris-(hydroxylmenthyl) aminomethane-(Neopentylglycol) were used as a model system for metal-like solidification. The transparency of the high-temperature non-faceted phases allows for the studying of the dynamic of the solid/liquid interface that lead to peritectic solidification morphologies. Investigations were carried out by using the Bridgman technic for process conditions where one or both phases solidify in a non-planar manner. Different growth conditions were observed, leeding to competitive peritectic growth morphologies. Additionally, the competitive growth was solved numerically to interpret the observed transparent solidification patterns.

KW - peritectic solidification

KW - ESA

KW - TRIS-NPG

KW - Bridgman-furnace

KW - MICRESS

UR - http://www.scopus.com/inward/record.url?scp=85081985456&partnerID=8YFLogxK

U2 - 10.3390/ma13040966

DO - 10.3390/ma13040966

M3 - Article

VL - 13.2020

JO - Materials

JF - Materials

SN - 1996-1944

IS - 4

M1 - 966

ER -