Preparation of Al₂O₃-Y₃Al₅O₁₂-ZrO₂ eutectic ceramic by flash sintering

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• 作者：Dianguang Liu^a ; ¹ ; Yan Gao^b ; ¹ ; Jinling Liu^b ; ^{liujinling@swjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Fangzhou Liu^a ; Kai Li^a ; Haijun Su^d ; Yiguang Wang^a ; ^{wangyiguang@nwpu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Linan An^c
• 关键词：Eutectic ceramic ; Indentation ; Flash sintering
• 刊名：Scripta Materialia
• 出版年：2016
• 出版时间：15 March 2016
• 年：2016
• 卷：114
• 期：Complete
• 页码：108-111
• 全文大小：947 K

文摘

Al₂O₃–Y₃Al₅O₁₂–ZrO₂ ternary eutectic oxide ceramic was prepared by flash sintering the corresponding powder. The highly dense sample was obtained at relatively low temperature and very short time with the assist of dc electric field. As-prepared ceramics well preserve the phase composition and microstructure of the original eutectic powder. The ceramic exhibits relatively high hardness and high fracture toughness. These results clearly demonstrate the feasibility of employing the flash-sintering technique to fabricate eutectic ceramics.