Structural Model of Two-Fraction Ceramic Dispersions

• Published in: Refractories and industrial ceramics Vol. 64; no. 6; pp. 632 - 634
• Main Authors: Kryuchkov, Yu. N., Makarov, A. S., Neklyudova, T. L.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2024; Springer; Springer Nature B.V
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Coordination numbers; Dispersions; Glass; Materials Science; Natural Materials; Particle size; Quartz; Structural models; Subsystems; average distance between particles; coordination number; average particle size; specific surface area; volumetric content of the dispersed phase; model; structure
• ISSN: 1083-4877; 1573-9139
• DOI: 10.1007/s11148-024-00903-8

A structural model of two-fraction ceramic dispersions in the form of two single fraction subsystems is proposed. The first contains a given volume fraction of spherical large particles interconnected mainly through a matrix phase consisting of small particles, aerosil and SAS (surface active substances). The second subsystem includes just small particles of quartz and aerosil with an average particle diameter of less than one micron, and the second matrix phase is formed by water and surfactants. The second subsystem forms an endless network between large quartz particles, maintaining these particles in suspension. The model permits calculation of the average coordination numbers and distances between particles in both systems.