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The Effect of Heating Rate on Sintering Mechanism of Alumina Nanoparticles
Dangqiang Wang1, Hai Mei1,*
1 Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, Wuhan University of Technology,
Wuhan, 430030, China
* Corresponding Authors: Hai Mei. Email: ;
The International Conference on Computational & Experimental Engineering and Sciences 2023, 27(1), 1-1. https://doi.org/10.32604/icces.2023.09455
Abstract
The densification process of sintered alumina is mainly controlled by surface, lattice, and interface diffusion,
and many experimental researches show that heating rate can affect the transfer of matter. Thus, to further
reveal the effect of heating rate on sintering mechanism of alumina nanoparticle, molecular dynamic
simulations were performed at five different heating rates to examine the migration of atoms and evolution
of microstructure in heating stage. Results show that the sintering process of heating is a typical thermal
activation process. High displacement response temperature is caused by high heating rate, which results in
the mechanism of atomic migration quickly changing from surface diffusion to overlapping of surface,
interface, and lattice diffusion. Nonuniform microstructure and asymmetrical sintered neck forms due to
unstable and nonuniform mass transfer. Sintered neck with small radius of curvature leads to high shrinkage
rate and large driving force. The sintering mechanism is expected to be helpful for understanding or
developing new fast sintering methods for ceramics.
Keywords
Cite This Article
APA Style
Wang, D., Mei, H. (2023). The effect of heating rate on sintering mechanism of alumina nanoparticles. The International Conference on Computational & Experimental Engineering and Sciences, 27(1), 1-1. https://doi.org/10.32604/icces.2023.09455
Vancouver Style
Wang D, Mei H. The effect of heating rate on sintering mechanism of alumina nanoparticles. Int Conf Comput Exp Eng Sciences . 2023;27(1):1-1 https://doi.org/10.32604/icces.2023.09455
IEEE Style
D. Wang and H. Mei, "The Effect of Heating Rate on Sintering Mechanism of Alumina Nanoparticles," Int. Conf. Comput. Exp. Eng. Sciences , vol. 27, no. 1, pp. 1-1. 2023. https://doi.org/10.32604/icces.2023.09455