TY - JOUR AU - Aydinyan, S. V. AU - Kirakosyan, H. V. AU - Zakaryan, M. K. AU - Abovyan, L. S. AU - Kharatyan, S. L. AU - Peikrishvili, A. AU - Mamniashvili, G. AU - Godibadze, B. AU - Chagelishvili, E. Sh. AU - Lesuer, D. R. AU - Gutierrez, M. PY - 2018/12/21 Y2 - 2024/03/29 TI - Fabrication of Cu-W Nanocomposites by Integration of Self-Propagating High-Temperature Synthesis and Hot Explosive Consolidation Technologies JF - Eurasian Chemico-Technological Journal JA - Eurasian Chem.-Technol. J. VL - 20 IS - 4 SE - Articles DO - 10.18321/ectj763 UR - https://ect-journal.kz/index.php/ectj/article/view/763 SP - 301-309 AB - <p>Manufacturing W-Cu composite nanopowders was performed via joint reduction of CuO and WO3 oxides with various ratios (W:Cu = 2:1, 1:1, 1:3, 1:13.5) using combined Mg–C reducer. Combustion synthesis was used to synthesize homogeneous composite powders of W-Cu and hot explosive consolidation (HEC) technique was utilized to fabricate dense compacts from ultrafine structured W-Cu powders. Compact samples obtained from nanometer sized SHS powders demonstrated weak relation between the susceptibility and the applied magnetic field in comparison with the W and Cu containing micrometer grain size of metals. The density, microstructural uniformity and mechanical properties of SHS&amp;HEC prepared samples were also evaluated. Internal friction (Q-1) and Young modulus (E) of fabricated composites studied for all samples indicated that the temperature 1000 °С is optimal for full annealing of microscopic defects of structure and internal stresses. Improved characteristics for Young modulus and internal friction were obtained for the W:Cu = 1:13.5 composite. According to microhardness measurement results, W-Cu nanopowders obtained by SHS method and compacted by HEC technology were characterized by enhanced (up to 85%) microhardness.</p> ER -