Studying High-Temperature Hardness of Powder Cobalt Alloys Strengthened with Niobium or Titanium Carbides
| Autor: | T. S. Cherepova, G. P. Dmitrieva |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Titanium carbide Materials science Metallurgy Metals and Alloys Niobium chemistry.chemical_element 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology Condensed Matter Physics Hot pressing 01 natural sciences Carbide chemistry.chemical_compound chemistry Mechanics of Materials 0103 physical sciences Materials Chemistry Ceramics and Composites Niobium carbide 0210 nano-technology Cobalt Titanium |
| Zdroj: | Powder Metallurgy and Metal Ceramics. 55:43-47 |
| ISSN: | 1573-9066 1068-1302 |
| Popis: | The hardness of cobalt powder alloys in the ‘room temperature–1150°C’ temperature range is investigated. The alloys are prepared by hot pressing of cobalt, chromium, aluminum, and iron powders with titanium or niobium carbides. The hardness of the alloys strengthened with 30 to 50 vol.% carbide at various temperatures show that the amount of the strengthening phase affects the hardness of the alloys investigated. The most significant factor that affects the hardness of the alloys is the temperature factor: with increasing temperature the hardness reduces regardless of the type and content of the carbides. It is shown that the hardness of the alloys with titanium carbide exceeds the hardness of those with niobium carbide. These results could be used to create friction materials for aviation purposes. |
| Databáze: | OpenAIRE |
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