Effects of SiC, SiO₂ and CNTs nanoadditives on the properties of porous alumina-zirconia ceramics produced by a hybrid freeze casting-space holder method

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• 作者：Aqeel Ali Al-Attar^a ; ^b ; ^{alattara@mst.edu} ; Mohsen Asle Zaeem^b ; ^{zaeem@mst.edu} ; Sami Abualnoun Ajeel^a ; Nawal Ezzat Abdul Latiff^a
• 关键词：Porous ceramics ; Alumina-zirconia ; Nanoadditives ; Freeze casting ; Space-holder
• 刊名：Journal of the European Ceramic Society
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：37
• 期：4
• 页码：1635-1642
• 全文大小：2014 K
• 卷排序：37

文摘

A hybrid freeze casting-space holder method is presented which for the first time produces up to 68% porosity for alumina-zirconia ceramics. The effects of nanoadditives, SiC, SiO2, and CNTs on the strength of these highly porous ceramics were investigated. By using 20% space-holder materials and 15% SiC nanoparticles, the density decreased by 33.8%, while maintaining a compressive strength of 132.5 MPa and porosity of 43.4%.