Effects of Nd2O3 Doping Levels on the Sintering, Microstructures, and Dielectric Properties of MgO-Al2O3-SiO2 Glass-Ceramics

Article Engineering, Electrical & Electronic

Effect of BaO on crystallization, sintering, and properties of MgO-Al2O3-SiO2 glass-ceramics

Ping Zhang et al.

Summary: The addition of BaO improves the densification and mechanical properties of MgO-Al2O3-SiO2 glass-ceramics, and alters their crystallization behavior and phase structure.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Effect of BaTiO3 addition on the microwave dielectric properties of MgO-Al2O3-SiO2-TiO2 glass-ceramic

Preeti Kumari et al.

Summary: The study added barium titanate to MAST glass ceramic to increase the dielectric constant, resulting in improved microwave dielectric properties. The sintered samples showed the formation of cordierite, BaTi5O11 and Ba2Ti9O20 compounds, which play a key role in enhancing the dielectric constant.

MATERIALS CHEMISTRY AND PHYSICS (2022)

Add to Collection

Article Materials Science, Ceramics

Preparation of a-cordierite through mechanochemical activation of MgO-Al2O3-SiO2 ternary system

C. A. d'Azevedo et al.

Summary: The study investigated the effect of mechanochemical activation on the solid-state synthesis of alpha-cordierite and its formation steps. The results show that the mechanochemical activation method is efficient in reducing the solid-state reaction temperature, resulting in the formation of alpha-cordierite at 1150℃.

CERAMICS INTERNATIONAL (2022)

Add to Collection

Article Materials Science, Ceramics

Volume crystallization and microwave dielectric properties of indialite/cordierite glass by TiO2 addition

Hitoshi Ohsato et al.

Summary: Indialite/cordierite (Mg2Al4Si5O18) glass-ceramics with low dielectric constant and high Qf are potential materials for micro/millimeter-wave applications in 5G mobile communication systems. The addition of TiO2 was found to prevent cracking during surface crystallization, resulting in the formation of spherical crystals and specific precipitated phases. The reaction between cordierite and TiO2 produced the new Al2TiO5 phase, influencing the microwave dielectric properties.

CERAMICS INTERNATIONAL (2021)

Add to Collection

Article Materials Science, Ceramics

Effect of MgO/SiO2 ratio and Al2O3 content on crystallization behavior and properties of cordierite-based glass-ceramics

Xiaoyang Xu et al.

Summary: The study examined the effects of MgO/SiO2 ratio and Al2O3 content on cordierite-based glass-ceramics. Results showed that decreasing Al2O3 content had a greater impact on the crystallization behavior of the glass-ceramics compared to increasing MgO/SiO2 ratio. At different temperatures, the MgO/SiO2 ratio and Al2O3 content influenced the crystallization behavior of cordierite.

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2021)

Add to Collection

Article Materials Science, Ceramics

Crystallization mechanisms of cordierite glass-ceramics with surface-center crystallization behavior

Wei Yu et al.

Summary: Cordierite glass-ceramics usually crystallize from the surface, and different nucleating agents can affect the crystallization behavior. The heat treatment process plays a crucial role in determining the final properties of the glass-ceramics.

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2021)

Add to Collection

Article Engineering, Electrical & Electronic

Effects of BaO on crystallization, structure and dielectric properties of MgO-Al2O3-SiO2 glass-ceramics for LTCC applications

Junzhu Chen et al.

Summary: The addition of BaO affects the crystallization, structure, and dielectric properties of cordierite-based glass-ceramics, leading to a decrease in glass transition temperature and an increase in crystallization temperature. Furthermore, BaO addition improves the sinterability of the glass samples.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2021)

Add to Collection

Article Materials Science, Ceramics

Influence of Y2O3 on microstructure, crystallization, and properties of MgO-Al2O3-SiO2 glass-ceramics

Chenxiong Gao et al.

Summary: The addition of Y2O3 in MAS glass-ceramics enhances crystallinity and promotes the formation of Indialite, leading to adjustments in thermal expansion coefficient. Proper amounts of Y2O3 improve densification and crystal phase precipitation during the sintering process, resulting in significantly enhanced mechanical properties.

JOURNAL OF NON-CRYSTALLINE SOLIDS (2021)

Add to Collection

Article Materials Science, Ceramics

Crystallization, spectroscopic and dielectric properties of CuO-added magnesium aluminosilicate-based glasses

Lidan Liu et al.

Summary: In this work, CuO-doped MgO-Al2O3-SiO2 based glasses were successfully synthesized using conventional melt quenching method, and the influence of CuO content on the structure and properties of the glasses was investigated. The results showed that CuO acted as a glass modifier to depolymerize the silicate network, with the main crystalline phase being alpha-cordierite. The presence of Cu2+ ions in the octahedral sites was confirmed by the characteristic absorption band around 750 nm on the optical transmittance spectra, and luminescence caused by Cu+ ions resulted in a decrease in luminescence lifetime.

CERAMICS INTERNATIONAL (2021)

Add to Collection

Article Materials Science, Ceramics

Effect of different nucleating agent ratios on the crystallization and properties of MAS glass ceramics

Dongfeng He et al.

Summary: This study investigated the effects of different nucleating agents on MAS glass-ceramics, with the composite nucleating agent showing the best performance.

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2021)

Add to Collection

Article Materials Science, Multidisciplinary