Wetting of some hard alloys by Melchior MNMts20-20
| Autor: | Yu. D. Myshko, M. N. Gapchenko, A. V. Klibus, N. Ya. Ishchuk |
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| Rok vydání: | 1974 |
| Předmět: |
Titanium carbide
Materials science Metallurgy Metals and Alloys chemistry.chemical_element Adhesion Manganese Tungsten Condensed Matter Physics Carbide Surface tension chemistry.chemical_compound chemistry Mechanics of Materials Materials Chemistry Ceramics and Composites Wetting Composite material Titanium |
| Zdroj: | Soviet Powder Metallurgy and Metal Ceramics. 13:731-734 |
| ISSN: | 1573-9066 0038-5735 |
| DOI: | 10.1007/bf00797720 |
| Popis: | A study was made of the density and surface tension of manganese Melchior MNMts20-20 at 1260–1280°C. Experimental angles of contact and works of adhesion were obtained for manganese Melchior on hard alloys containing titanium and tungsten carbides. It was established that the surface tension and density of liquid manganese Melchior are 1360 ergs/cm2 and 8.35 g/cm3, respectively. The work of adhesion for the systems investigated is > 2000 ergs/cm2 at angles of contactθ of < 90°. It was found that the wetting of T5K10, T15K6, and T30K4 hard alloys by Melchior MNMts20-20 is less effective than that of VK type alloys. As a general rule, the wetting ability of hard alloys decreases with increase in their titanium carbide content. The results obtained are fully in accord with conclusions concerning the wetting of the carbides based on their heats of formation. It was confirmed that the higher the heat of formation of a carbide, the poorer is its wetting ability. |
| Databáze: | OpenAIRE |
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