Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glass

Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glass

In the field of low temperature co-fired ceramic (LTCC), it remains a challenge to design the performance of LTCC with low permittivity less than 5. Here, the K2O– B2O3–SiO2–Al2O3 composites are prepared without the preparation of prior glass. Meanwhile, the factors of the CaO content on microstruct...

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Main Authors: Shang Yong, Zhong Chaowei, Jia Ruonan, Xiong Huajing, Li Hao, Li Xinyuan, Jian Xian
Format: Article
Language:English
Published: De Gruyter 2019-12-01
Series:Nanotechnology Reviews
Subjects:
low permittivity
low loss
high flexural strength
ltcc applications
Online Access:https://doi.org/10.1515/ntrev-2019-0041
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spelling doaj-38dccc1e4b5942f38a7108d87b6c85402021-09-06T19:21:12ZengDe GruyterNanotechnology Reviews2191-90972019-12-018145946610.1515/ntrev-2019-0041Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glassShang Yong0Zhong Chaowei1Jia Ruonan2Xiong Huajing3Li Hao4Li Xinyuan5Jian Xian6State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu610054, ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu610054, ChinaCollege of Chemistry, University of Chinese Academy of Sciences, 100049Beijing, ChinaSchool of Materials and Energy, National Engineering Research Center of Electromagnetic Radiation Control Materials, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu610054, ChinaCollege of Electrical and Information Engineering, Hunan University, Changsha410082, ChinaState Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu610054, ChinaSchool of Materials and Energy, National Engineering Research Center of Electromagnetic Radiation Control Materials, Center for Applied Chemistry, University of Electronic Science and Technology of China, Chengdu610054, ChinaIn the field of low temperature co-fired ceramic (LTCC), it remains a challenge to design the performance of LTCC with low permittivity less than 5. Here, the K2O– B2O3–SiO2–Al2O3 composites are prepared without the preparation of prior glass. Meanwhile, the factors of the CaO content on microstructure, phase structure and properties of the composites are considered systematically. The crystal structure measured by X-ray diffraction (XRD) shows that there are quartz and alumina as the crystal phases. The results reveals that the tailoring CaO content benefits sintering densification, low dielectric loss, great mechanical properties and low thermal expansion coefficient. As CaO content increases up to 2.8 wt%, the composites sintered at 850∘C have a dielectric constant of 4.94 and tanδ of 8 × 10−4 at 1 MHz, thermal expansion coefficient (CTE) of 8.5 ppm/∘C, and flexural strength of 150 MPa. As the mass fraction of CaO increases up to 3.2 wt%, the maximum flexural strength of 173MPa is achieved. The above study provides an effective approach for preparing the novel composites as a promising candidate for LTCC applications.https://doi.org/10.1515/ntrev-2019-0041low permittivitylow losshigh flexural strengthltcc applications
collection DOAJ
language English
format Article
sources DOAJ
author Shang Yong
Zhong Chaowei
Jia Ruonan
Xiong Huajing
Li Hao
Li Xinyuan
Jian Xian
spellingShingle Shang Yong
Zhong Chaowei
Jia Ruonan
Xiong Huajing
Li Hao
Li Xinyuan
Jian Xian
Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glass
Nanotechnology Reviews
low permittivity
low loss
high flexural strength
ltcc applications
author_facet Shang Yong
Zhong Chaowei
Jia Ruonan
Xiong Huajing
Li Hao
Li Xinyuan
Jian Xian
author_sort Shang Yong
title Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glass
title_short Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glass
title_full Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glass
title_fullStr Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glass
title_full_unstemmed Preparation of low-permittivity K2O–B2O3–SiO2–Al2O3 composites without the addition of glass
title_sort preparation of low-permittivity k2o–b2o3–sio2–al2o3 composites without the addition of glass
publisher De Gruyter
series Nanotechnology Reviews
issn 2191-9097
publishDate 2019-12-01
description In the field of low temperature co-fired ceramic (LTCC), it remains a challenge to design the performance of LTCC with low permittivity less than 5. Here, the K2O– B2O3–SiO2–Al2O3 composites are prepared without the preparation of prior glass. Meanwhile, the factors of the CaO content on microstructure, phase structure and properties of the composites are considered systematically. The crystal structure measured by X-ray diffraction (XRD) shows that there are quartz and alumina as the crystal phases. The results reveals that the tailoring CaO content benefits sintering densification, low dielectric loss, great mechanical properties and low thermal expansion coefficient. As CaO content increases up to 2.8 wt%, the composites sintered at 850∘C have a dielectric constant of 4.94 and tanδ of 8 × 10−4 at 1 MHz, thermal expansion coefficient (CTE) of 8.5 ppm/∘C, and flexural strength of 150 MPa. As the mass fraction of CaO increases up to 3.2 wt%, the maximum flexural strength of 173MPa is achieved. The above study provides an effective approach for preparing the novel composites as a promising candidate for LTCC applications.
topic low permittivity
low loss
high flexural strength
ltcc applications
url https://doi.org/10.1515/ntrev-2019-0041
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AT zhongchaowei preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass
AT jiaruonan preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass
AT xionghuajing preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass
AT lihao preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass
AT lixinyuan preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass
AT jianxian preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass
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