Low temperature sintering and microwave dielectric properties of the LBSCA-doped (Zn0.95Co0.05)2SiO4 ceramics

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• 作者：HuaWen Chen ; Hua Su ; HuaiWu Zhang ; YiMin Gui…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：26
• 期：5
• 页码：2820-2823
• 全文大小：768 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1573-482X

文摘

The (Zn0.095Co0.05)2SiO4 powers were fabricated through a traditional solid-state preparation process. Li2O–B2O3-a href='/search?dc.title=SiO&facet-content-type=ReferenceWorkEntry&sortOrder=relevance' class='reference-link webtrekk-track' gaCategory="Internal link" gaLabel="SiO" gaAction="reference keyword">SiO2–CaO–Al2O3 (LBSCA) glass was successfully developed as a low-doped sintering aid and it was found that LBSCA glass could significantly lower the sintering temperature of the synthesized powers from 1,300?°C to around 900?°C. Only 1?wt% of LBSCA-doping contributed to a 24.9?% increase of the relative density. X-ray diffraction spectra indicated that pure willemite phase was obtained. Scanning electron microscope images demonstrated that low LBSCA-doping (??wt%) promoted the grain densification and uniformity of the specimens. A dense microstructure with uniform grain size could be obtained with 2?wt% LBSCA and sintered at 900?°C. The specimen also presented high microwave dielectric properties: ε r ?=?6.5, Q?×?f?=?57,000?GHz and τ f ?=??5?ppm/°C.