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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sintering and rounding kinetics of irregular glass particles

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Reis, Raphael M. C. V. [1] ; Barbosa, Anne J. [2] ; Ghussn, Luciana [3] ; Ferreira, Eduardo B. [4] ; Prado, Miguel O. [5] ; Zanotto, Edgar D. [2]
Total Authors: 6
[1] Fluminense Fed Univ UFF, Dept Met & Mat Engn VMT, Volta Redonda - Brazil
[2] Fed Univ Sao Carlos UFSCar, Dept Mat Engn DEMa, Vitreous Mat Lab LaMaV, Sao Carlos, SP - Brazil
[3] Rio De Janeiro State Univ UERJ, Dept Mech & Energy, Resende - Brazil
[4] Univ Sao Paulo, Sao Carlos Engn Sch EESC, Dept Mat Engn SMM, Sao Carlos, SP - Brazil
[5] Comis Nacl Energia Atom, San Carlos De Bariloche, Rio Negro - Argentina
Total Affiliations: 5
Document type: Journal article
Source: Journal of the American Ceramic Society; v. 102, n. 2, SI, p. 845-854, FEB 2019.
Web of Science Citations: 1

Compacts of irregular glass particles sinter up to five times faster than spherical-particle compacts of the same composition. This effect has been attributed to the sharp edges of irregular particles. In this article, we propose and test a phenomenological model for the sintering kinetics of jagged glass particles considering their rounding during sintering. We assume that the small radii of curvature of the particle edges increase as the particles round off and control the sintering rate. We tested the model by measuring the sintering shrinkage of spherical and irregular particle compacts of a diopside (MgO center dot CaO center dot 2SiO(2)) glass and using literature sintering data for particles of different shapes of a soda-lime-silica glass. The sintering rate of irregular-particle compacts is initially much higher but tends to reach that of their spherical counterparts as they round off. Our model describes the experimental shrinkage of both glasses and explains the shrinkage anisotropy of irregular-particle compacts in the initial stages of sintering, providing a significant step toward the understanding and description of the sintering kinetics of jagged glass particles. (AU)

FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
Grantee:Edgar Dutra Zanotto
Support type: Research Grants - Research, Innovation and Dissemination Centers - RIDC