Comparing hydrothermal sintering and cold sintering process: Mechanisms, microstructure, kinetics and chemistry
TSUJI, Kosuke
Pennsylvania State University [Penn State]
Department of Materials Science and Engineering
Materials Research Institute
Pennsylvania State University [Penn State]
Department of Materials Science and Engineering
Materials Research Institute
HÉRISSON DE BEAUVOIR, Thomas
Centre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
Centre interuniversitaire de recherche et d'ingénierie des matériaux [CIRIMAT]
VAN DUIN, Adri C.T.
Materials Research Institute
Department of Materials Science and Engineering
Department of Mechanical Engineering
< Leer menos
Materials Research Institute
Department of Materials Science and Engineering
Department of Mechanical Engineering
Idioma
en
Article de revue
Este ítem está publicado en
Journal of the European Ceramic Society. 2020-04, vol. 40, n° 4, p. 1312-1324
Elsevier
Resumen en inglés
This study reports the sintering of zinc oxide (ZnO) through the comparison between the hydrothermal sintering (HS) and the cold sintering process (CSP) operating in closed and open conditions, respectively. Sintering was ...Leer más >
This study reports the sintering of zinc oxide (ZnO) through the comparison between the hydrothermal sintering (HS) and the cold sintering process (CSP) operating in closed and open conditions, respectively. Sintering was performed at 155 ± 5 °C applying a pressure of 320 MPa, and during different holding times (0 min, 20 min, 40 min and 80 min). Whatever the low sintering process used, ceramics characteristics are almost similar in terms of relative densities and ZnO structure. However, several differences such as the nature of stabilized phases, grain sizes and quantities of residual molecules in the densified pellets, were characterized and explained. The formation of zinc acetate “bridges” was observed ex situ in hydrothermally sintered samples. A detailed ReaxFF molecular dynamics simulation was performed to help understand the formation mechanisms of zinc acetate “bridges” and compare the chemical activities between HS and CSP.< Leer menos
Palabras clave en inglés
Molecular dynamics
ReaxFF
Ceramics
Cold sintering
Hydrothermal sintering
Molecular dynamics
Orígen
Importado de HalCentros de investigación