HOT EXPLOSIVE CONSOLIDATION OF NANOSTRUCTURED TUNGSTEN–SILVER PRECURSORS
| Autor: | Peikrishvili, A., Godibadze, B., Chagelishvili, E., Tsiklauri, M., Dgebuadze, A. |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| DOI: | 10.17628/ecb.2015.4.37-42 |
| Popis: | Different precursors of refractory nanostructural tungsten-silver (W-Ag) composites were consolidated into cylindrical billets by hot explosive consolidation (HEC) method. Different types of compositions with a nanoscale W phase (100 nm) and coarse matrix phase of Ag were consolidated to near theoretical density under and above of melting point of silver (940 – 1050 °C). The intensity of loading in all experiments was around 10 GPa. The combination of high temperatures and two stage explosive densification processes was found to be beneficial to the consolidation of the nanostructural W based composites, resulting in high densities, good integrity, and good electronic properties. The structure and property of the samples depends on the value of consolidation temperature and dimension of consolidated particle. It was observed that for the W-Ag based composites, application of high temperature and consolidation of precursors near melting point of silver 940 °C gives samples without cracking with high value of density and uniform distribution of two phases. The features of structure/property relationship depending on phase content and consolidation conditions have been discussed. European Chemical Bulletin, Vol 4, No 1-3 (2015): European Chemical Bulletin |
| Databáze: | OpenAIRE |
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