Sintering kinetic window for yttria-stabilized cubic zirconia

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• 作者：Vaclav Pouchly^a ; ¹ ; ^{vaclav.pouchly@ceitec.vutbr.cz" class="auth_mail" title="E-mail the corresponding author} ; Karel Maca^a ; ^b ; ^{maca@fme.vutbr.cz" class="auth_mail" title="E-mail the corresponding author} ; ^{karel.maca@ceitec.vutbr.cz" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Cubic zirconia ; Sintering ; Grain growth ; Activation energy
• 刊名：Journal of the European Ceramic Society
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：36
• 期：12
• 页码：2931-2936
• 全文大小：1260 K

文摘

The influence of two pressure less sintering methods (single-step sintering and two-step sintering) on the final microstructure of cubic ZrO₂ was studied. Two different theoretical models were applied for the evaluation of the activation energies of sintering and grain growth. Consequently, the comparison of established activation energies allowed us to discuss the existence of sintering kinetic window where the grain growth is suppressed, while sintering is still active. The results show the sensitivity of microstructural evolution of c-ZrO₂ to the sintering temperature. The improved microstructure (i.e., the highest density and lowest grain size) of c-ZrO₂ was obtained, when low sintering temperature together with long dwell were applied irrespective of the sintering regime used.