Abstract

Ilya Alexandrovich Zhukov^1,2, Elena Sergeevna Dedova^1,2,3, Svetlana Petrovna Buyakova^1,2,3, Sergey Nikolaevich Kulkov^1,2,3, Ruslan Viktorovich Levkov^1,2, Grigory Mamontov² and Vladimir Promakhov²

DOI : http://dx.doi.org/10.13005/ojc/320109

This work was aimed at studying the influence of structure and properties of powders of aluminum hydroxide and zirconium dioxide on the structure and properties of the obtained ceramics. The work studied Al₂O₃ceramics obtained from aluminum hydroxide and composite materials ZrO₂-Al₂O₃ obtained from mixtures of zirconium dioxide and aluminum hydroxide powders. The work shows the data about the structure and properties of the initial powders used for the production of ceramics, as well as data about the structure and properties of Al₂O₃and ZrO₂-Al₂O₃ ceramic materials. It has been found that increasing aluminum hydroxide content in the initial mixture with the zirconium dioxide powder leads to increasing porosity of ZrO₂-Al₂O₃ composites sintered within the temperature range between 1,400 and 1,650 °C. It has been shown that increasing sintering temperature of the Al₂O₃ceramics leads to increasing compressive strength from 6 MPa to 800 MPa at the temperature of sintering between 1,300 and 1,500 °C, respectively.  

Alumina; hydroxide aluminum; zirconium dioxide; strength; porosity; composite; properties

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