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The effect of inert additives on the explosive mechanochemical synthesis of some metal chalcogenides
Institution:1. Higher Institute of Chemical Technology, Department of Physics, Bourgas 8010 Bulgaria;1. Sofia University, Faculty of Physics, Department of Atomic Physics, Sofia 1126, Bulgaria;2. Institute of Microelectronics, Sofia 1784, Bulgaria;1. Department of Physics, Karunya University, Coimbatore 641 114, Tamilnadu, India;2. Department of Materials Science and Engineering, National University of Singapore, Singapore 117 546, Singapore;3. Department of Physics, National University of Singapore, Singapore 117 542, Singapore;1. Research School of Earth Sciences, Australian National University, Canberra, ACT 2601, Australia;2. Australian Synchrotron, 800 Blackburn Rd, Clayton, VIC 3168, Australia;1. Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea;2. Center for Hydrogen Fuel Cell Research, Korea Institute of Science and Technology, 39-1 Hawolgok-Dong, Seongbuk-gu, Seoul, 136-791, Republic of Korea;1. Green Technology Research Group, Facultad de Ingeniería y Ciencias Aplicadas, Universidad de los Andes, Monseñor Álvaro del Portillo, Las Condes, Santiago, 12455, Chile;2. Departamento de Ciencias de la Ingeniería, Facultad de Ingeniería, Universidad Andres Bello, 8031015, Chile;3. Departamento de Ingeniería Química y Biotecnología, Universidad de Chile, Casilla, Santiago, 2777, Chile;4. Departamento de Química, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
Abstract:The effect of different inert additives on the mechanochemical synthesis of SnS was studied. A transition from explosive to nonexplosive mechanochemical reaction was observed. It was shown that this change takes place only when a critical volume xc is occupied by inert material. The critical volume for a transition from an explosive to nonexplosive mechanochemical synthesis were determined for the chalcogenides of Zn, Cd, and Sn. The xc values obtained are discussed. On the basis of the new data concerning the critical dimensions rc of the exploding mechanical aggregates and the percolation phenomena, a mechanism for the transition from an explosive to nonexplosive mechanochemical synthesis is suggested.
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