0TEH 2014		6th International Scientific Conference on Defensive Technologies
			[serbian ]

 

 

Information Scientific committee Organizing committee Topics Programme Papers Index of autors Instructions to autors Photos Contacts OTEH 2012

 

fine grain, high-density GRAPHITE FOR ROCKET motor NOZZLES

 

Slavko d. karić

Vinča Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Serbia,
karic@vinca.rs

Petar Z. laušević

Vinča Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Serbia

Gvozden s. tasić

Vinča Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Serbia

vladimir m. nikolić

Vinča Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Serbia

milica p. marčeta kaninski

Vinča Institute of Nuclear Sciences, Department of Physical Chemistry, University of Belgrade, Serbia

Nikola gligorijević

Military Technical Institute, Belgrade, nikola.gligorijevic@gmail.com

Saša živković

Military Technical Institute, Belgrade

Abstract: The fine grain high density graphite is preferred material for many military applications in vehicle nose tips, thrust tabs, heat shields, nozzle throats of rocket motors, etc. Graphite is suitable constructing material because of its ability to withstand extremely high temperatures while maintaining its strength and shape, and his relatively low density. The graphite used in nozzle throats must have high thermal shock resistance and withstand extreme and sudden temperature changes. There are several technological processes which are used for designing and preparation of high density graphite for nozzles throats, such as cold-pressing, extrusion, die-molding process, etc. These differ in the composition of raw materials used, operating temperatures and continiоus/discontinious production. In this work we present development and examination of the fine grain, high-density graphite using modified die-molding process, aimed for specific nozzle throat application. Obtained graphite material has high density of > 1.8 g/cm³, and good mechanical and electrical characteristics.

Keywords: high-density graphite, rocket nozzle, die-molding