Interaction between Components of the Fe–Ti–B4C Powder Charge during Heating

  

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2012, #09/10
http://www.materials.kiev.ua/article/1085

Abstract

The structurization during reaction synthesis of compacted Fe–Ti–В4С powder mixtures is considered. X-ray diffraction of the material synthesized at 1200 °C showed the presence of TiC and TiB2 phases formed in the interaction of titanium with carbon and boron resulting from the dissolution of В4С particles in the liquid phase and the interaction of iron with boron. The interaction between titanium, iron, and carbon (boron) is accompanied by a significant exothermic effect confirmed by the presence of two exothermic peaks on the DTA curve at 1085 °С (corresponding to the eutectic formed in the Fe–Ti system in the interaction of respective mixture particles on contact surfaces) and 1236 °C (resulting from the formation of titanium diboride and carbide particles from the liquid phase).


CARBIDE, CARBURIZED STEEL, EXOTHERMIC REACTION, PHASE COMPOSITION, SINTERING, STRUCTURIZATION, THERMAL SYNTHESIS, TITANIUM DIBORIDE