Experimental Study on the Shock Consolidation of Ti+Si Powders

Abstract:

The research on the explosive compaction of reactive powders is a hot issue. In this work, unreacted Ti-Si block with high compactness has been successfully fabricated under explosive-driven compaction process. The precursors of Ti-Si powder with different stoichiometric ratios undergo pre-compaction shaping by hydraulic press and then shock loading treatment by using low-detonation-velocity explosives of varying loading conditions. The results show that the chemical reaction between Ti and Si powders are partly initiated even under low detonation pressures, indicating extremely low reaction threshold in the Ti-Si system. Meanwhile, optimal experimental conditions are displayed as the initial pressing compactness degree of 61%, and shock pressure of 11GPa. A compactness of 97% is achieved in the synthesized Ti-Si block with the lowest reactivity.

• Periodical: Materials Science Forum (Volume 910)
• Pages: 3-8
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.910.3
• Online since: January 2018
• Authors: Nai Fu Cui, Peng Wan Chen*, Chun Xiao Xu
• Keywords: Compactness, Explosive Compaction, Reactive Powders

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