| Texto completo | |
| Autor(es): |
Ramirez Acosta, Maria Helena
[1]
;
Rodrigues, Lorena Raphael
[1]
;
Cassar, Daniel Roberto
[1]
;
Montazerian, Maziar
[1]
;
Peitl Filho, Oscar
[1]
;
Zanotto, Edgar Dutra
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn, Dept Mat Engn, Sao Carlos - Brazil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of the American Ceramic Society; v. 104, n. 9, p. 4537-4549, SEP 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
We collected a plethora of new data to test the hypothesis that the failure of the Classical Nucleation Theory (CNT) below the glass transition range is just an experimental artifact. Since reaching the steady-state nucleation regime takes a significant time for treatments below the glass transition temperature, data collected in this temperature range tend not to have reached a steady state. Because of this potential problem, we examined the CNT using new experimental data for three stoichiometric silicate glasses: Li2Si2O5, BaSi2O5, and Na4CaSi3O9. We also measured the equilibrium viscosity for the studied glass batches and used it as a proxy for the effective diffusion coefficient. The analysis was conducted by applying a steady-state criterion and evaluating the error propagation throughout all calculations. Using this rigorous procedure, we have not observed the alleged CNT failure. Our comprehensive results support recent studies questioning this possible CNT failure helping solve a longstanding problem in glass science. (AU) | |
| Processo FAPESP: | 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros |
| Beneficiário: | Edgar Dutra Zanotto |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |
| Processo FAPESP: | 17/12491-0 - Processos cinéticos em vidros e novas formulações vítreas via aprendizagem de máquina |
| Beneficiário: | Daniel Roberto Cassar |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |