Improved alumina based ceramic objects

Solicitante: IMI TAMI INSTITUTE RESEARCH
N. de solicitud: WO2006IL01014
N. de publicación: WO2007029237

Sintered alumina-based ceramic objects exhibiting high hardness and density combined with low porosity, and a process for making them are provided. The process includes mixing alumina with a grain growth-inhibiting material, and with a glue and pressing wax material, in a liquid medium in which the last two materials are soluble while the alumina is not, sequentially removing essentially all of the liquid medium in order to form a ready to press (RTP) free flowing powder, pressing the RTP powder to a «green body», de-waxing and sintering the green body. The so obtained sintered objects are suitable for ballistic protection, as well as for other uses.

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