Properties of Ceramics Based on Al2o3 with Admixture of Unltradispersed Powder of Al2o3 Synthesized by the Electrochemical Method
| Autor: | Yu. I. Komolikov, V. I. Pudov, I. D. Kashcheev, K. G. Zemlyanoi |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Apparent density Materials science 020502 materials Sintering Corundum 02 engineering and technology Bending engineering.material Electrochemistry 01 natural sciences Indentation hardness 0205 materials engineering Chemical engineering visual_art 0103 physical sciences Ultimate tensile strength Materials Chemistry Ceramics and Composites engineering visual_art.visual_art_medium Ceramic |
| Zdroj: | Refractories and Industrial Ceramics. 60:346-349 |
| ISSN: | 1573-9139 1083-4877 |
| DOI: | 10.1007/s11148-019-00364-4 |
| Popis: | We present the results of investigation of the regularities of sintering and properties of corundum ceramics based on alumina with admixtures of ultradispersed powder of Al2O3(Al2O3 UDP) synthesized by the electrochemical method. It is shown that, as the firting temperature and the concentration of Al2O3 UDP increases, we observe a regular elevation of the linear shrinkage, microhardness, and ultimate strength in bending of the ceramics (the maximum values attained at 1550°C are as follows: 27.8%, 17 GPa, and 340 MPa, respectively). The introduction of Al2O3 UDP makes it possible to get an apparent density of the ceramics equal to 3.87 g/cm3 even at 1550°C. |
| Databáze: | OpenAIRE |
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