| abstract |
Hard, dense composite ceramic bodies of titanium diboride, boron carbide, silicon carbide and silicon, having a wide variety of utilities, are produced by forming a mixture of titanium diboride, boron carbide and a temporary binder into a desired shape to obtain a coherent green body which is siliconized by heating it in contact with silicon to a temperature above the melting point of silicon, whereupon the molten silicon infiltrates the body and reacts with some of the boron carbide therein to produce silicon carbide in situ. |