Low temperature production of glass ceramics in the anorthite-diopside system via sintering and crystallization of glass powder compacts


The production of glass ceramics (M) with theoretical anorthite-diopside (An-Di) weight ratios of 60/40, 50/50 and 45/55 via sintering and crystallization of glass powder compacts was investigated at different temperatures between 800 and 950 degrees C. The investigated compositions are located in the cross-section of the ternary fluorapatite-An-Di system close to An-Di binary joint, with constant fluorapatite content of 4.8 wt.%. Two different groups of glass powders, with mean particle size of 2 and 10 mu m, were used. The experimental results showed that sintering is almost complete at 800 degrees C, preceding crystallization, which takes place via surface crystallization mechanism. The properties values of the produced GCs, which are the best for the composition close to An-Di eutectic line, are discussed with respect to the evolution of crystalline phases and the microstructure over increasing firing temperature. Under the technology perspective, the investigated processing route is significantly superior in comparison to the attempts reported in earlier studies. (c) 2007 Elsevier Ltd and Techna Group S.r.l. All rights reserved.



subject category

Materials Science


Marques, VMF; Tulyaganov, DU; Agathopoulos, S; Ferreira, JMF

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".