Developing porous ceramics on the base of zirconia oxide with thin and permeable pores by crystallization of organic additive method

International Conference and Youth Scientific School on "Materials and Technologies of New Generations in Modern Materials Science"

Kamyshnaya, K.S.^1 ; Khabas, T.A.^1

National Research Tomsk Polytechnic University, Tomsk

634050, Russia^1

关键词: Air cleaning;    Freeze casting methods;    Micropowders;    Nano powders;    Organic additives;    Porous ceramics;    Zirconia oxide;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/156/1/012039/pdf
DOI  :  10.1088/1757-899X/156/1/012039

来源: IOP

【 摘 要 】

In this paper porous ceramics on the base of ZrO2nanopowders and micropowders has been developed by freeze-casting method. A zirconia/carbamide slurry was frozen in mold and dehydrated in CaCl2at room temperature. This simple process enabled the formation of porous ceramics with highly aligned pores as a replica of the carbamide crystals. The samples showed higher porosity of 47.9%. In addition, these materials could be used as membrane for air cleaning.