Year: 2026
Type: article
Abstract: The article examines the features of thermal cooling regimes of a melt during splat quenching and micro-wire casting in glass insulation under ultra-high cooling rates. On the basis of heat-conduction equations and similarity-theory criteria, a quantitative evaluation of heat-transfer coefficients and cooling rates at the contact and free surfaces of rapidly solidified films, as well as of micro-wires with various diameters cooled in air and water, is carried out. It is established that during splat quenching, simultaneous non-equilibrium crystallisation occurs on both surfaces of the film, while the achieved degrees of supercooling (≈250—350 K) and cooling rates are sufficient for the formation of metastable structures. It is shown that a decrease in film thickness and micro-wire diameter leads to a sharp increase in both the heat-transfer coefficient and the cooling rate.
Institution: Dniprovsk State Technical University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7160141998