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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Preparation and properties of the barium borate glassy matrix composite materials containing fused silica and monoclinic zirconia
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Preparation and properties of the barium borate glassy matrix composite materials containing fused silica and monoclinic zirconia

机译：熔融石英和单斜晶氧化锆硼酸钡玻璃态复合材料的制备与性能

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摘要

In this work, the LTCC composite materials containing fused silica and monoclinic zirconia ceramic particles, respectively, which based on the composite matrix composed of the barium borate glassy matrix and α-alumina ceramic particles, were prepared by traditional solid-state preparation process at a sintering temperature of 900 °C. Sintering mechanism and physical properties, e.g. dielectric properties and coefficient of thermal expansion (CTE), of the LTCC composite ceramics are investigated and discussed in detail in terms of their mineral phase composition. The results indicate that a barium borate glassy phase can be easily formed from a barium borate compound, which is obtained by the chemical combination of barium hydroxide octahydrate and an aqueous solution of boric acid, at a sintering temperature of 900 °C. In turn, the barium borate glassy melts can supply a liquid phase sintering aid for the fabrication of the LTCC composite ceramics with the sintering temperature of 900 °C during sintering. The introduction of the a-alumina ceramic particles to the barium borate glassy matrix can improve the sintering behavior whereas the presence of fused silica or monoclinic zirconia particles in the composite ceramics is important to adjust the dielectric, thermal and mechanical properties of the LTCC composite materials. The work may be referenced for the fabrication of multi-layer LTCC structures with tailored physical properties.
机译：在这项工作中，通过传统的固态制备方法，在室温下，分别制备了由熔融硅酸盐和单斜晶氧化锆陶瓷颗粒组成的LTCC复合材料，该复合材料基于由硼酸钡玻璃状基​​质和α-氧化铝陶瓷颗粒组成的复合基质。烧结温度为900°C。烧结机理和物理性能，例如根据矿物相组成，对LTCC复合陶瓷的介电性能和热膨胀系数（CTE）进行了详细研究和讨论。结果表明，在900℃的烧结温度下，可以通过由八水合氢氧化钡和硼酸水溶液的化学结合获得的硼酸钡化合物容易地形成硼酸钡玻璃相。反过来，硼酸钡玻璃态熔体可以在烧结过程中以900°C的烧结温度提供液相烧结助剂，用于制造LTCC复合陶瓷。将a-氧化铝陶瓷颗粒引入硼酸钡玻璃态基质可以改善烧结性能，而复合陶瓷中熔融二氧化硅或单斜晶氧化锆颗粒的存在对于调节LTCC复合材料的介电，热和机械性能很重要。 。该工作可用于制造具有定制物理特性的多层LTCC结构。

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