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Effects of MgO/CaO ratio on the crystal phase composition and performance of MgO-CaO-B2O3-SiO2 glass–ceramics for LTCC applications.
- Source :
- Journal of Materials Science: Materials in Electronics; Jul2024, Vol. 35 Issue 20, p1-10, 10p
- Publication Year :
- 2024
-
Abstract
- The MgO-CaO-B<subscript>2</subscript>O<subscript>3</subscript>-SiO<subscript>2</subscript> (MCBS) glass–ceramics with different MgO/CaO ratio were designed and prepared. The phase transition, microstructure, dielectric properties and flexural strength of the MCBS system were investigated. The quantitative calculations results showed that the MgO/CaO ratio favored the formation of CaMgSi<subscript>2</subscript>O<subscript>6</subscript> phase but hindered the formation of CaSiO<subscript>3</subscript> and CaB<subscript>2</subscript>O<subscript>4</subscript> phases. With increasing MgO/CaO ratio, the microstructure of sample changes from dendritic to polygonal shape. The MgO/CaO ratio also affected the properties of matrix. In this study, the 5MgO-36CaO-18B<subscript>2</subscript>O<subscript>3</subscript>-41SiO<subscript>2</subscript> (mol%) sample sintered at 825 °C for 15 min exhibited superior performance: the density of 2.64 g cm<superscript>−3</superscript>, a moderate dielectric constant of 5.92, the dielectric loss of 1.54 × 10<superscript>–3</superscript> (10 GHz), the thermal expansion coefficient of 9.61 ppm K<superscript>−1</superscript>, the thermal conductivity of 3.02 W m<superscript>−1</superscript> K<superscript>−1</superscript>, and a high flexural strength of 208.7 MPa, which might be a potential material for LTCC applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 35
- Issue :
- 20
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 178549907
- Full Text :
- https://doi.org/10.1007/s10854-024-13200-4