Design of electroconductive MWCNT-Al2O3 composite ceramics
| Autor: | A.L. Myz, O.V. Kichai, Vladimir L. Kuznetsov, R.A. Shutilov, G.R. Karagedov |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Composite number 02 engineering and technology Carbon nanotube Conductivity 021001 nanoscience & nanotechnology 01 natural sciences law.invention law Torr visual_art 0103 physical sciences visual_art.visual_art_medium Narrow range Dense material Particle size Ceramic Composite material 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 4:11375-11380 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2017.09.012 |
| Popis: | Electroconductive ceramic composites have many special applications for electronics, wireless communications and nuclear physics. In the latter case, additional requirements appear such as narrow range of conductivity, vacuum-tightness and decay of long-life isotopes. Multiwall carbon nanotubes (MWCNT)-Al2O3 composite ceramics can satisfy the conditions, if dense material is received. In this work, attempts to receive such material are made. Dependence of the conductivity on start particle size (0.1-1μm), methods of mixing (dry and wet) and consolidation (cold and hot isostatic techniques) are obtained and analyzed. Vacuum-tight (10-7 torr/l/s), dense (98%TD) composite material was sintered at 1520°C 200 MPa in hot isostatic press, having electroconductivity level 10-3 S/cm. |
| Databáze: | OpenAIRE |
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