TY - JOUR
T1 - Coalescence in cold sintering
T2 - A study on sodium molybdate
AU - Ndayishimiye, Arnaud
AU - Fan, Zhongming
AU - Mena-Garcia, Javier
AU - Anderson, Julie M.
AU - Randall, Clive A.
N1 - Funding Information:
This work was supported by the Air Force Office of Scientific Research (AFOSR, grant n° FA9550-19-1-0372 ). Authors would like to thank Mr. Anthony T. Diaz-Huemme for the EBSD sample preparation.
Publisher Copyright:
© 2022 The Authors
PY - 2022/9
Y1 - 2022/9
N2 - Cold sintering (CS) is a recently developed processing technique, enabling the low temperature densification of ceramics, using a solvent and moderate pressures. Although the densification process in CS is known to be mainly driving by pressure solution creep, additional fundamental aspects driving the interfacial chemistry reactions are still a subject of debate. Herein, we focus on the aspect of grain coarsening under the densification process. Although grain coarsening by coalescence is likely to occur during CS, it becomes the dominant mechanisms after the slowdown of pressure solution creep in the late stages of the process. With sodium molybdate (Na2Mo2O7) as model material, and using water as a transient phase, we investigate the evolution of features confirming coalescence as one of the mechanisms operating during cold sintering.
AB - Cold sintering (CS) is a recently developed processing technique, enabling the low temperature densification of ceramics, using a solvent and moderate pressures. Although the densification process in CS is known to be mainly driving by pressure solution creep, additional fundamental aspects driving the interfacial chemistry reactions are still a subject of debate. Herein, we focus on the aspect of grain coarsening under the densification process. Although grain coarsening by coalescence is likely to occur during CS, it becomes the dominant mechanisms after the slowdown of pressure solution creep in the late stages of the process. With sodium molybdate (Na2Mo2O7) as model material, and using water as a transient phase, we investigate the evolution of features confirming coalescence as one of the mechanisms operating during cold sintering.
UR - http://www.scopus.com/inward/record.url?scp=85134191343&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85134191343&partnerID=8YFLogxK
U2 - 10.1016/j.oceram.2022.100293
DO - 10.1016/j.oceram.2022.100293
M3 - Article
AN - SCOPUS:85134191343
SN - 2666-5395
VL - 11
JO - Open Ceramics
JF - Open Ceramics
M1 - 100293
ER -