Year: 2025
Type: article
Abstract: This study investigates the relationship between crystallization behavior, magnetic and mechanical properties, and crack formation in a trachybasaltic glass using differential scanning calorimetry (DSC), Raman spectroscopy, X-ray powder diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM), and Vickers indentation tests. Various thermal treatments modify the crystalline cargo (i.e., crystal content), affecting hardness, crack resistance, and magnetism. Single-step annealing at 850 °C rapidly generates nanocrystals, enhancing mechanical strength and inducing ferromagnetic behavior. In contrast, a two-step annealing process (750 °C → 850 °C) promotes gradual magnetite formation, increasing hardness and reducing crack formation while maintaining a predominantly paramagnetic response. These findings suggest that irregular volcanic heating patterns may drive natural crystallization, influencing elastic energy storage and altering failure dynamics.
Source: Scientific Reports
Institutions: University of Verona, Institute of Geosciences and Earth Resources, National Research Council, University of Turin, University of Milano-Bicocca, University of Trento, Centro Brasileiro de Pesquisas Físicas, Pontifícia Universidade Católica do Rio de Janeiro, Istituto Nazionale di Geofisica e Vulcanologia
Language: English
Subfield: Ceramics and Composites
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,690
Award: G1016895160
OpenAlex ID: W4416003861