Effects of Alumina on Devitrification Kinetics and Mechanism of K2O–CaO–SrO–BaO–B2O3–SiO2 Glass
スポンサーリンク
概要
- 論文の詳細を見る
Effects of alumina on the devitrification kinetics and mechanism of a low-dielectric K2O–CaO–SrO–BaO–B2O3–SiO2 glass powder have been investigated. Crystalline phases including cristobalite (SiO2) and pseudowollastonite [(Ca, Ba, Sr)SiO3] are formed during the firing of the pure glass. With added alumina content greater than a critical value, e.g., 10–20 vol% at 900–1000°C, the above crystalline phases are completely prevented but anorthite [(Ca, Sr, Ba)Al2Si2O8] is formed. This result is attributed to the dissolution of alumina into the glass. The dissolution changes the composition of the glass to become aluminum-rich, and the dissolution kinetics of alumina into the glass is far too rapid compared with the formation of cristobalite and pseudowollastonite. The crystallization kinetics of anorthite follows the analysis of the Avrami equations, and the results show an apparent activation energy close to that of the Al–O bond strength, suggesting a reaction-controlled kinetics.
- 2003-07-15
著者
-
Fang Yu-ching
Department Of Materials Science And Engineering National Tsing Hua University
-
Jean Jau-ho
Department Of Materials Science And Engineering National Tsing Hua University
-
Wilcox David
Ceramics Technologies Research Laboratory, Motorola Labs. Tempe, AZ, USA
-
Fang Yu-Ching
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, ROC
-
Jean Jau-Ho
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, ROC
-
Dai Steve
Ceramics Technologies Research Laboratory, Motorola Labs. Tempe, AZ, USA
関連論文
- Effects of Alumina on Devitrification Kinetics and Mechanism of K2O–CaO–SrO–BaO–B2O3–SiO2 Glass
- Crystallization and Properties of a Low k Glass Composite
- Organic Distributions on the Surfaces of Alumina Green Tape
- Viscosity of Porous Low-Dielectric Glass Composite : Structure and Mechanical and Thermal Properties of Condensed Matter
- Low-Fire Processing of BaTiO3 with BaCuO2–CuO
- Low-Fire Processing and Dielectric Properties of TiO2 with MnOX–CuO
- Low-Fire Processing of CaTiO3 with 2ZnO–B2O3 Glass
- Compositional Design and Properties of a Low-k Silica Dielectric for Multilayer Ceramic Substrate
- Low-fire Processing of Microwave BaTi4O9 Dielectric with BaO–Li2O–B2O3–SiO2–ZnO Glass
- Low-Fire Processing of Voltage-Tunable Ba0.6Sr0.4TiO3 Dielectric
- Effects of Alumina on Densification of a Low-Temperature Cofired Crystalllizable Glass+Alumina System
- Compositional Design of Lead-Free, Low-Temperature Cofired Ceramic Dielectric Composite
- Preparation and Characterization of Low-Dielectric Glass Composite with Aluminum Borate
- Effect of Alumina on Crystallization of Low-Dielectric Lead Borosilicate Glass
- Binary Crystallizable Glass Composite for Low-Dielectric Multilayer Ceramic Substrate
- Crystallization of Boric Acid on Low-K Glass+Ceramic Green Tapes
- Low-Fire NiO-CuO-ZnO Ferrite with Bi_2O_3
- Preparation and Electrical Properties of LaFeO3 Compacts Using Chemically Synthesized Powders
- Electrical Properties of Low-Fire Ferroelectric+Ferrimagnetic Ceramic Composite
- Processing and Properties of Low-Fire Ni–Cu–Zn Ferrite with V2O5