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Preparation and Characterization of Low Temperature Sintered Alumina by CuO-TiO<sub>2</sub>-Nb<sub>2</sub>O<sub>5</sub>-Ag<sub>2</sub>O Additives
12
Citations
3
References
2007
Year
Materials ScienceMaterials EngineeringChemical EngineeringElectrical EngineeringSinteringHigh Temperature MaterialsLow-temperature SinteringEngineeringCeramic MaterialEnergy CeramicCeramics MaterialsLow Temperature SinteringCeramic SynthesisMetal-ceramic SystemsCeramic PowdersAg 2MicrostructureThermal Properties
Abstract For the purpose of enabling the low-temperature sintering of alumina, the addition of Ag 2 O to CuO-TiO 2 -Nb 2 O 5 type sintering additive was examined. The use of CuO-TiO 2 -Nb 2 O 5 -Ag 2 O type sintering additive by 5 wt% enabled the low-temperature sintering of alumina at 860°C. It is presumed that the formation of Cu 4 TiNb 4 O x solid solution has an important role for low temperature sintering of alumina. The obtained sintered material showed high thermal conductivity of 18 W/mK, higher than that of conventional LTCC materials, and that the material could be co-fired with silver electrodes. Keywords: Aluminasintering additivesLTCCthermal conductivitydielectric properties
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