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...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2019-12-01
|
| Series: | Nanotechnology Reviews |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/ntrev-2019-0041 |
| _version_ | 1818362587460403200 |
|---|---|
| author | Shang Yong Zhong Chaowei Jia Ruonan Xiong Huajing Li Hao Li Xinyuan Jian Xian |
| author_facet | Shang Yong Zhong Chaowei Jia Ruonan Xiong Huajing Li Hao Li Xinyuan Jian Xian |
| author_sort | Shang Yong |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-13T21:34:57Z |
| format | Article |
| id | doaj.art-38dccc1e4b5942f38a7108d87b6c8540 |
| institution | Directory Open Access Journal |
| issn | 2191-9097 |
| language | English |
| last_indexed | 2024-12-13T21:34:57Z |
| publishDate | 2019-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanotechnology Reviews |
| spelling | doaj.art-38dccc1e4b5942f38a7108d87b6c85402022-12-21T23:30:42ZengDe 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 |
| 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 |
| title | 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_short | 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 |
| topic | low permittivity low loss high flexural strength ltcc applications |
| url | https://doi.org/10.1515/ntrev-2019-0041 |
| work_keys_str_mv | AT shangyong preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass AT zhongchaowei preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass AT jiaruonan preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass AT xionghuajing preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass AT lihao preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass AT lixinyuan preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass AT jianxian preparationoflowpermittivityk2ob2o3sio2al2o3compositeswithouttheadditionofglass |