Abstract
An explanation of processes occurring during preparation of high-density micro- and nanogranular ceramics without using external pressure on the basis of published data is proposed. It is well known that pore growth commences after the start of transition of open into closed pores that begins with about 30 % open porosity. It is necessary to maintain open pores to the maximum possible sintered ceramic overall density. The article describes different methods of ceramic sintering making it possible to prepare high-density pore-free ceramics.
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