Apparent Sintering Activation Energy Estimated by Master Sintering Curves for 8 mol% Y2O3 Doped ZrO2 Polycrystals during Shrinkage-Rate Controlled Flash Sintering

被引：0
作者：
Koike M. [1 ]
Kodaira A. [1 ]
Tokunaga T. [1 ]
Yamamoto T. [1 ]
机构：
[1] Department of Materials Design Innovation Engineering, Nagoya University, Nagoya
来源：
Materials Transactions | 2023年 / 64卷 / 10期
基金：
日本科学技术振兴机构; 日本学术振兴会;
关键词：
field-assisted sintering technology; flash sintering; MSC; rate-controlled sintering; sintering; zirconia;
D O I：
10.2320/matertrans.MT-T2023002
中图分类号：
学科分类号：
摘要：
The apparent activation energy of sintering for 8-mol%-Y2O3-doped ZrO2 during shrinkage-rate-controlled flash sintering was determined using a master sintering curve. The activation energy during SCF sintering was found to decrease from approximately 700 to 430 kJ/mol with density. The activation energy in a high-density region is approximately similar value of lattice diffusion, 460 kJ/mol. The relative density range over which the decrease in activation energy occurred during SCF sintering was smaller than during thermal sintering and further moved to a lower temperature range. The increase in shrinkage rate at lower temperatures that occurs during SCF sintering could be considered to be related to this decrease in activation energy. ©2023 The Japan Institute of Metals and Materials.
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页码：2315 / 2320
页数：5
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