Self-supporting bodies are produced by reactive infiltration of a parent metal into a boron carbide material which may contain one or both of a boron donor material and a carbon donor material. The reactive infiltration typically results in a composite comprising a boron-containing compound, a carbon-containing...http://www.google.com.au/patents/US5017334?utm_source=gb-gplus-sharePatent US5017334 - Process for preparing self-supporting bodies and products produced thereby