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Fabrication of Ni 4 Nb 2 O 9 ceramics via a reaction-sintering process was investigated. A mixture of raw materials was sintered into ceramics by bypassing calcination and subsequent pulverization stages. Ni 4 Nb 2 O 9 phase appeared at 1300°C and increased with increasing soak time. Ni 4 Nb 2 O 9 content was found >96% in...
Synthesis of Ba 2 La 3 Ti 3 NbO 15 (BLTN) microwave ceramics by a simple and effective reaction-sintering process was investigated. The mixture of BaCO 3 , La 2 O 3 , TiO 2 and Nb 2 O 5 was pressed and sintered directly without any calcinations involved. BLTN ceramics could be obtained after 2–6h sintering at 1430–1500°C...
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