The light weight composites based on boron carbide, carbon and aluminum inlet powders have been prepared. The techniques of attrition milling, vibration, self-propagating high-temperature synthesis, warm and hot pressing and heat treatment for composites manufacturing were used. The results of composites characterization indicate that during processing the boron aluminum carbide and cubic boron nitride were formed at first. Other hard refractory compounds were formed in the composite during followed heat treatment up to 1500 °C in vacuum. By this the aluminum content was drastically decreased and boron carbide dissolved increasing the amount of aluminum boron carbide, aluminum oxide, aluminum carbon nitrogen oxide as well as detrimental aluminum carbide at highest temperatures. The formed hard refractory compounds have great influence on mechanical properties of the composite.
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