期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 34, 期 15, 页码 3981-3991出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2014.05.012
关键词
Glass-ceramic; alpha-Cordierite; LTCC; Composition effect
资金
- National Key Technology R&D Program of Peoples Republic of China [2011BAB03B01]
This article investigates effect of composition, including SiO2 and impurity defined to contain K2O, Na2O, Fe2O3, etc., from K-feldspar, on sinter-crystallization and properties of the low temperature co-fired alpha-cordierite glass-ceramics. Increasing impurity content from 5.72 wt% to 9.16 wt% leads to enhanced crystallinity, formation of leucite and more pores but the crystallinity and porosity decreased with a further increase to 10.8 wt%. The main impurity K2O is critical for formation of alpha-cordierite and leucite. Only alpha-cordierite was precipitated from the glasses with different SiO2 contents but an increase of SiO2 content slightly improves their densification. The impurity and SiO2 contents greatly affect the properties of glass-ceramics. Notably, some glass-ceramics from K-feldspar show high densification at low temperature, low dielectric constant (6-8), low loss (about 0.005), appropriate linear CTEs (4.32-5.87 x 10(-6) K-1) and flexural strength (above 100 MPa), all of which meet the requirements of LTCC substrates. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据