Synthesis and characterization of LZS/伪-Al₂O₃ glass-ceramic composites for applications in the LTCC technology

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• 作者：S. Arcaro ; F.R. Cesconeto ; F. Raupp-Pereira ; A.P. Novaes de Oliveira
• 关键词：A. composites ; D. alumina ; D. glass-ceramics ; LTCCs
• 刊名：Ceramics International
• 出版年：May, 2014
• 年：2014
• 卷：40
• 期：4
• 页码：5269-5274
• 全文大小：1521 K

文摘

In this work, 伪-Al₂O₃ (1-40 vol%) particles (350 nm) were added to a 19.58Li₂O路11.10ZrO₂路69.32SiO₂ (5 碌m) glass-ceramic matrix to prepare composites with the purpose of studying the influence of 伪-Al₂O₃ on their mechanical, thermal and electrical properties in order to obtain materials for LTCCs applications. The composites, sintered between 800 and 950 掳C for 30 min, with relative densities between 85% and 93%, showed zircon and 尾-spodumene as main crystalline phases. The maximum bending strength (290 MPa) was achieved for composites with 1% 伪-Al₂O₃. For composites containing between 1% and 10% 伪-Al₂O₃, sintered at 900 掳C/30 min, the electrical and thermal conductivities and CTE varied between 3.35 and 1.21脳10^鈭?0 S/cm, 4.65 and 2.98 W/m K, 9.54 and 3.36脳10^鈭? 掳C^鈭?, respectively.