Compositions of MgTiO3-CaTiO3 ceramic with two borosilicate glasses for LTCC technology
Compositions of MgTiO3-CaTiO3 ceramic with two borosilicate glasses for LTCC technology
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DOI：
10.1016/s0955-2219(00)00145-x
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发表时间：
2000-12-01
影响因子：
5.7
通讯作者：
Lepp채vuori, S
中科院分区：
文献类型：
--
作者：
Jantunen, H;Rautioaho, R;Lepp채vuori, S
研究了ZnO-SiO2-B2O3/MgTiO3-CaTiO3混合物（ZSB/MMT-20）和BaO-SiO2-B2O3/MgTiO3-CaTiO3混合物（BSB/MMT-20）作为LTCC介电材料的新候选材料。在两种材料中观察到两阶段烧结行为，从600度和850度左右开始。在900℃烧结后，ZSB/MMT-20几乎达到了全密度（97%），而在875℃烧结后，BSB/MMT-20的孔隙率高达23%，随后在900℃烧结时样品部分熔化。焙烧后，ZSB/MMT-20具有由ZnTiO3、Zn2SiO4、Mg4/3Zn2/3B2O5和TiO2相组成的完整晶体结构，而BSB/MMT-20在900度焙烧下由结晶TiO2和BaTi(BO3)(2)、无定形SiBa(BO3)(2)和SiB2O5组成的ZSB/MMT-20具有良好的微波性能，在7 GHz时的损耗系数为0.001，介电常数为10.6。在875°c下发射的BSB/MMT-20对应值分别为0.002和8.2。(C) 2000 Elsevier Science Ltd.版权所有。
Mixtures of ZnO-SiO2-B2O3/MgTiO3-CaTiO3 (ZSB/MMT-20) and BaO-SiO2-B2O3/MgTiO3-CaTiO3 (BSB/MMT-20) have been investigated as new candidates for LTCC dielectric materials. Two-stage sintering behaviour was observed in both materials, starting at around 600 and 850 degreesC. Nearly full density (97%) was achieved in ZSB/MMT-20 after sintering at 900 degreesC, while a high porosity of 23% was measured in BSB/MMT-20 after firing at 875 degreesC followed by partial melting of samples during sintering at 900 degreesC. After firing, fully crystalline structure with phases of ZnTiO3, Zn2SiO4, Mg4/3Zn2/3B2O5 and TiO2 were found in ZSB/MMT-20, while the structure of BSB/MMT-20 consisted of crystalline TiO2 and BaTi(BO3)(2) and amorphous SiBa(BO3)(2) and SiB2O5 ZSB/MMT-20 fired at 900 degreesC showed promising microwave properties having the dissipation factor of 0.001 and a permittivity of 10.6 at 7 GHz. The corresponding values for BSB/MMT-20 fired at 875 degreesC were 0.002 and 8.2, respectively. (C) 2000 Elsevier Science Ltd. All rights reserved.