Fabrication of Al2O3–ZrO2 ceramics with high porosity and strength
| Autor: | K.S. Kamyshnaya, T. A. Khabas |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Fabrication Oxide Sintering 02 engineering and technology 01 natural sciences law.invention chemistry.chemical_compound law 0103 physical sciences Materials Chemistry Ceramic Crystallization Composite material Porosity 010302 applied physics Process Chemistry and Technology 021001 nanoscience & nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials Compressive strength chemistry visual_art Ceramics and Composites visual_art.visual_art_medium Hardening (metallurgy) 0210 nano-technology |
| Zdroj: | Ceramics International. 47:1666-1671 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2020.08.283 |
| Popis: | This study describes the synthesis of ceramics, in which a micrometre-sized Al2O3–ZrO2 nanopowder was used as an oxide base for the hardening of the materials. To a suspension of this mixed metal oxide, the pore-forming crystallisation additives camphor and carbamide were added to produce ceramics with thin permeable pores. Camphor crystallised in the oxide suspension in the form of single pentagonal stars and сarbamide crystallised in the form of thin elongated needles. The use of the different crystallisation additives allowed the formation of ceramics after sintering that have both permeable and complex pore morphologies, where anisotropic properties were observed using carbamide as an additive but not when camphor was used. The total porosity of the resulting ceramics was 51.3%, with a compressive strength in the range of 17.3–92.3 MPa. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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