Enhanced sinterability, thermal conductivity and dielectric constant of glass-ceramics with PVA and BN additions
| Autor: | Dilara Arıbuğa, Ufuk Akkaşoğlu, Buğra Çiçek, Özge Balcı-Çağıran |
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| Přispěvatelé: | Arıbuğa, Dilara, Balcı, Özge (ORCID 0000-0001-6756-3180 & YÖK ID 295531), Akkasoğlu, Ufuk, Çiçek, Buğra, Koç University Boron and Advanced Materials Application and Research Center (KUBAM) / Koç Üniversitesi Bor ve İleri Malzemeler Uygulama ve Araştırma Merkezi (KUBAM), Graduate School of Sciences and Engineering, College of Sciences, Department of Materials Science and Engineering, Department of Chemistry |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
glass-BN composites
PVA addition low temperature sintering microstructure thermal conductivity dielectric constant LTCC General Materials Science Physical chemistry Multidisciplinary materials science Metallurgy and metallurgical engineering Applied physics Condensed matter physics Glass-BN composites Low temperature sintering Microstructure Thermal conductivity Dielectric constant |
| Zdroj: | Materials Materials; Volume 15; Issue 5; Pages: 1685 |
| Popis: | With the rapid development of the microelectronics industry, many efforts have been made to improve glass-ceramics' sinterability, thermal conductivity, and dielectric properties, which are essential components of electronic materials. In this study, low-alkali borosilicate glass-ceramics with PVA addition and glass-BN composites were prepared and successfully sintered at 770 degrees C. The phase composition, density, microstructure, thermal conductivity, and dielectric constant were investigated. It was shown that PVA addition contributes to the densification process of glass-ceramics (~88% relative density, with closed/open pores in the microstructure) and improves the thermal conductivity of glass material from 1.489 to 2.453 W/K.m. On the other hand, increasing BN addition improves microstructures by decreasing porosities and thus increasing relative densities. A glass-12 wt. % BN composite sample exhibited almost full densification after sintering and presented apparent and open pores of 2.6 and 0.08%, respectively. A high thermal conductivity value of 3.955 W/K.m and a low dielectric constant of 3.00 (at 5 MHz) were observed in this material. Overall, the resulting glass-ceramic samples showed dielectric constants in the range of 2.40-4.43, providing a potential candidate for various electronic applications. Akcoat Company |
| Databáze: | OpenAIRE |
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