Effect of sintering temperatures on properties of BaO–B2O3–SiO2–Al2O3 glass/silica composites for CBGA package

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• 作者：Bo Li ; Quanyin Long ; Dinan Duan
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：27
• 期：3
• 页码：2206-2211
• 全文大小：1,527 KB
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• 作者单位：Bo Li (1) (2) (3)
  Quanyin Long (1)
  Dinan Duan (1)
  
  1. School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu, 610054, China
  2. State Key Laboratory of Electronic Thin Films and Integrated Devices, Chengdu, 610054, China
  3. National Engineering Research Center of Electromagnetic Radiation Control Materials, Chengdu, 610054, China
  
• 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

BaO–B₂O₃–SiO₂–Al₂O₃ (BBSA) glass/silica composites synthesized by solid-state reaction method were developed for CBGA packages, and the effects of sintering temperature (900–950 °C) on the phase transformation, microstructure, thermal, mechanical and electrical properties were investigated. XRD results show that the major phases quartz and cristobalite, and the minor phase BaSi₂O₅ are detected in BBSA composites. Furthermore, it was found that the quartz phase transforms to cristobalite phase at 930–940 °C. The formation of cristobalite phase with higher coefficient of thermal expansion (CTE) led to the increase of CTE value of BBSA composites. However, excessive cristobalite phase content would degrade the mechanical properties and the linearity of thermal expansion of the ceramics. BBSA composites sintered at 920 °C exhibited excellent properties: low dielectric constant and loss (ε_r = 6.2, tanδ = 10−4 at 1 MHz), high bending strength (179 MPa), high CTE (12.19 ppm/°C) as well as superior linearity of the thermal expansion.