RT Journal Article
T1 Fabrication of Cu-W nanocomposites by integration of self-propagating high-temperature synthesis and hot explosive consolidation technologies
A1 Aydinyan, S. V.
A1 Kirakosyan, H. V.
A1 Zakaryan, M. K.
A1 Abovyan, L. S.
A1 Kharatyan, S. L.
A1 Peikrishvili, A.
A1 Mamniashvili, G.
A1 Godibadze, B.
A1 Chagelishvili, E. Sh
A1 Lesuer, D. R.
A1 Gutierrez, M.
AB 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&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.
SN 1562-3920
YR 2018
FD 2018
LK https://hdl.handle.net/11556/4321
UL https://hdl.handle.net/11556/4321
LA eng
NO Aydinyan , S V , Kirakosyan , H V , Zakaryan , M K , Abovyan , L S , Kharatyan , S L , Peikrishvili , A , Mamniashvili , G , Godibadze , B , Chagelishvili , E S , Lesuer , D R & Gutierrez , M 2018 , ' Fabrication of Cu-W nanocomposites by integration of self-propagating high-temperature synthesis and hot explosive consolidation technologies ' , Eurasian Chemico-Technological Journal , vol. 20 , no. 4 , pp. 301-309 . https://doi.org/10.18321/ectj763
NO Publisher Copyright: © 2018 Al-Farabi Kazakh National University.
NO The authors gratefully acknowledge the financial support of the International Science and Technology Center (ISTC project # A-2123).
DS TECNALIA Publications
RD 2 sept 2024