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WANG, L. POUCHLÝ, V. MACA, K. SHEN, Z. XIONG, Y.
Original Title
Intensive particle rearrangement in the early stage of spark plasmasintering process
Type
journal article in Web of Science
Language
English
Original Abstract
The densification behaviors of 3 mol% yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP) ceramicsduring spark plasma sintering (SPS) were analyzed both using the master sintering curve (MSC) approachand by evaluating the temperature dependent evolution of density and densification rate. It was foundthat densification curves could hardly be fitted using one apparent activation energy value by MSCconception, by which it indicated that more than one densification mechanisms were involved in SPS.Moreover, dependent neither on applied pressure (20–100 MPa) nor heating rates higher than 50◦C/min,the maximum densification rate had always been observed at rather similar ∼78% of theoretical density(TD) accompanied with negligible grain growth. An intensive particle rearrangement mechanism wasproposed to dominate the rapid densification to 78% TD in early stage of SPS process, by which it yieldedthe considerable faster densification rate than those achievable by diffusion-related processes.
Keywords
Spark plasma sintering (SPS), Densification, Particle rearrangementa
Authors
WANG, L.; POUCHLÝ, V.; MACA, K.; SHEN, Z.; XIONG, Y.
RIV year
2015
Released
1. 6. 2015
ISBN
2187-0764
Periodical
Journal of Asian Ceramic Societies
Year of study
3
Number
2
State
Japan
Pages from
183
Pages to
187
Pages count
5
BibTex
@article{BUT124193, author="Ling {Wang} and Václav {Pouchlý} and Karel {Maca} and Zhijian {Shen} and Yan {Xiong}", title="Intensive particle rearrangement in the early stage of spark plasmasintering process", journal="Journal of Asian Ceramic Societies", year="2015", volume="3", number="2", pages="183--187", doi="10.1016/j.jascer.2015.02.004", issn="2187-0764" }