Effect of Compression Pressure on Combustion of Tapes Obtained by Rolling a Ti + 1.7B Powder Mixture
S. G. Vadchenko, D. S. Suvorov, O. K. Kamynina, N. I. Mukhina
Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences, Chernogolovka, 142432 Russia
Keywords: self-propagating high-temperature synthesis (SHS), combustion, reaction tapes, rolling, titanium, boron, pressure
Abstract
Combustion during self-propagating high-temperature synthesis of Ti + 1.7B reaction tapes obtained by rolling from a powder mixture is experimentally investigated. Dependences between the combustion wave propagation velocity in the reaction tapes and the applied pressure are revealed. It is shown that the burning rate of the tapes weakly depends on the compression pressure within 0.001 ÷ 4 MPa. At a compression pressure above 0.5 MPa, unreacted regions appear during the combustion of the tapes. The limiting pressure at which the combustion stops is determined as 12 MPa.
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