caa a22 4500 475810953 CHVBK 20180406123758.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/BF02699360 doi (NATIONALLICENCE)springer-10.1007/BF02699360 Macrokinetics of thermal explosion in a niobium-aluminum system. II. Phase-formation dynamics [Elektronische Daten] [E. Pis'menskaya, A. Rogachev, V. Ponomarev] The thermal explosion in a gas-free mixture of metal powders has been studied for the first time using the method of dynamic x-ray structural analysis. The dynamics of formation of new crystalline phases at all stages of the process is determined. It is shown that melting of aluminum is followed by dissolution of niobium in the melt and crystallization of the intermediate product NbAl3, and the melt does not wet niobium particles. A dramatic improvement in wetting is observed at a temperature of ≈ 1040 K (apparently, due to the destruction of oxide films). This results in a thermal explosion, and the Nb2Al phase is formed. The reaction during the thermal explosion also follows the dissolution-crystallization mechanism. Kluwer Academic/Plenum Publishers, 2000 Pis'menskaya E. Institute of Structural Macrokinetics and Material Science Problems, Russian Academy of Sciences, 142432, Chernogolovka aut Rogachev A. Institute of Structural Macrokinetics and Material Science Problems, Russian Academy of Sciences, 142432, Chernogolovka aut Ponomarev V. Institute of Structural Macrokinetics and Material Science Problems, Russian Academy of Sciences, 142432, Chernogolovka aut Combustion, Explosion and Shock Waves Springer US 36/2(2000-03-01), 198-203 0010-5082 36:2<198 2000 36 10573 https://doi.org/10.1007/BF02699360 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02699360 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pis'menskaya E. Institute of Structural Macrokinetics and Material Science Problems, Russian Academy of Sciences, 142432, Chernogolovka aut NATIONALLICENCE 700 1- Rogachev A. Institute of Structural Macrokinetics and Material Science Problems, Russian Academy of Sciences, 142432, Chernogolovka aut NATIONALLICENCE 700 1- Ponomarev V. Institute of Structural Macrokinetics and Material Science Problems, Russian Academy of Sciences, 142432, Chernogolovka aut NATIONALLICENCE 773 0- Combustion, Explosion and Shock Waves Springer US 36/2(2000-03-01), 198-203 0010-5082 36:2<198 2000 36 10573 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer