Effects of rare earth addition on sintering process and dielectric property of cordierite based glass-ceramics

• 作者: 刘心宇 陈国华
• 来源期刊: 中国有色金属学会会刊（英文版）
• 学科: 工学
• 关键词: sintering rare earth cordierite glass-ceramics dielectric property
• 年，卷（期）: 2004,（6）
• 页码范围: 1145-1150
• 页数: 6页
• 分类号: TG171
• 语种: 英文

摘要

The effects of rare earth oxide on the sintering and dielectric property of cordierite-based glass-ceramics with non-stoichiometric composition prepared by quenching of molten droplets were investigated. The results show that the addition of rare earth oxide can lower the sintering temperature of cordierite glass-ceramics, improve the densification process and obviously reduce sintering activation energy. It is found that the densification of cordieritebased glass-ceramics is a liquid phase sintering process. The dielectric constant of the sintered compacts enhances with the increase of the density. When the sintering temperature is identical, the rare earth addition is found to have a noticeable effect on the dielectric loss of glass-ceramics. The properties of the glass-ceramics containing rare earth oxide appear to be correct for low firing temperature substrates.