Abstract: Reaction Bonded Ceramics for Ceramic Composite Materials Comprising Mullite as the Main Component and Corundum and Thortveitite or Cerianite as Minor ComponentsThe present invention pertains to reaction bonded mullite-containing ceramic molded parts, a process for their preparation and their use.A particular embodiment of the present invention consists in reaction bonded mullite-containing ceramic molded parts, obtainable by the heat-treatment of a finely dispersed mixture of an aluminum-containing material, a silicon-containing material, and a rare earth metal-containing material in an oxygen-containing atmosphere.

Abstract: A method for weakening a detonation in a container or piping system by dividing up the starting detonation front and bringing it together in an expansion space. The detonation front is divided into a main front and a secondary front and the main front is routed into the expansion space with a longer propagation time, in such a way that when the main front enters into the expansion space, the space contains combustion gases of the secondary front.