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Bentonitic clays are commonly available in several regions where ceramic tiles are produced. In spite of this availability, their use in the ceramic industry for the formulation of ceramic tile bodies is limited to contents below 10% w/w. The main reason for the restriction of its use is that bentonite induces the flocculation of water clay dispersions obtained by wet milling. In this paper we report...
We report the formation of carbon-based fibers inside a bentonitic matrix during sintering of a ceramic body. Since this peculiar bentonite contained organic matter and iron, the formation of these fibers may be analogous to the synthesis of carbon nanotubes by chemical vapor deposition or spray pyrolysis. In these processes iron acts as catalyst to favor graphitization of the carbon source. During...
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