Mullite Needles Grown from a MgO/Al2O3/TiO2/SiO2/B2O3/CaO Glass Melt: Orientation and Diffusion Barriers
Source abstract
Abstract
Mullite crystals were grown from a MgO/Al 2 O 3 /TiO 2 /SiO 2 /B 2 O 3 /CaO glass melt via the method of electrochemically induced nucleation. Nucleation occurs near the cathode; the initially formed crystals are not oriented with their polar axes parallel to the electric field. The crystals showed needle-like shape. The crystal growth velocity shows a maximum at about 1260 °C and does not depend on time. The orientation distribution of the crystals in the resulting glass-ceramics was analyzed using electron backscatter diffraction (EBSD). During crystal growth, diffusion zones around the crystals are formed as shown by energy dispersive X-ray spectroscopy (EDX). These diffusion zones act as barriers which control the morphology of the formed mullite crystals.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Glass properties and applications · Advanced ceramic materials synthesis · Nuclear materials and radiation effects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Otto-Schott-Institut, Jena University, Fraunhoferstr. 6, 07743 Jena
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