Effect of reaction sintering process on the microwave dielectric properties of Ba2Ti9O20 materials

doi:10.1016/j.jeurceramsoc.2009.04.024

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/58291

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題名:	Effect of reaction sintering process on the microwave dielectric properties of Ba2Ti9O20 materials
作者:	Lin, I-Nnan;Chang, Chi-Ben;Leou, Keh-Chyang;Cheng, Hsiu-Fung
貢獻者:	淡江大學物理學系
關鍵詞:	Reaction sintering;Microwave dielectric properties;Ba2Ti9O20 materials
日期:	2010-01
上傳時間:	2011-09-30 21:59:49 (UTC+8)
出版者:	London: Elsevier Ltd
摘要:	The pre-reaction step, which is the holding time at 1000°C in reaction-sintering process, was observed to influence the characteristics of the Ba2Ti9O20 materials profoundly. For the materials possessing high sintered density and of pure Hollandite-like structure, the uniformity of granular structure is the prime factor, altering the microwave dielectric properties of the samples. Utilizing the BaTi4O9 + BaTi5O11 mixtures to replace for the 2BaTiO3 + 7TiO2 ones pronouncedly improved the uniformity of the microstructure and thus markedly increased the Q × f-value for the Ba2Ti9O20 materials. The possible explanation for such a phenomenon is that the B-series mixture forms the Ba2Ti9O20 Hollandite-like phase in a simpler way and results in more uniform microstructure then the A-series mixture. The microwave properties of B-series materials are superior to those of A-series ones, achieving K = 38.2 and Q × f-value = 36,000 GHz for the samples, which were pre-reacted at 1000°C for 6 h and were sintered at 1410°C for 4 h by reaction-sintering processes.
關聯:	Journal of the European Ceramic Society 30(2), pp.159–163
DOI:	10.1016/j.jeurceramsoc.2009.04.024
顯示於類別:	[物理學系暨研究所] 期刊論文

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