Abstract
The synthesis of WSi 2 and WSi 2– x vol.%Nb and WSi 2– y vol.%ZrO 2 composites with x, y=0, 5, 7, 10, 12, 15, 17, 20 by field activated combustion was investigated. Self-propagating synthesis fronts can be initiated above minimum (threshold) values which depended on the amount of added Nb and ZrO 2. Reaction wave velocities had a direct dependence on the applied field and on the amount of the second phase. XRD results showed the presence of the WSi 2 phase in all systems with the additional phase of Nb or ZrO 2 for the composites.
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