Papers by Keyword: Mass Preparation

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Authors: Agnese Pavlova, Liga Berzina-Cimdina, Janis Locs, Dagnija Loca, Joerg Bossert
Abstract: In past years scientists have interest in new specific TiO2 properties, which result from oxygen and titanium ratio in ceramic. Recently such TiO2 applications as implantable biomaterials in medicine and photocatalysts in purification of waste water become very significant. High temperature vacuum treated titanium oxide ceramics become biologically active and decrease microbiological water pollution when used as electrodes in electrochemical water treatment. In most of these cases highly dense ceramics are requested. TiO2 low-temperature modification anatase and TiO2 high-temperature modification rutile was used during the investigation. Different additives were used to improve particle packing and increase green density of pressed pellets as well as following sinter density. During the investigation it was found that green density of the samples depends not only on powder characteristics such as particle size distribution, grain size, mineralogical composition of raw material, quantity and nature of additives used in mass preparation procedure but also on kind and magnitude of compaction and sintering conditions.
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