Authors: Eftekhari Yekta, B.; Hasheminia, S.; Alizadeh, P.

Source: British Ceramic Transactions, Volume 103, Number 5, October 2004 , pp. 235-237(3)

Publisher: Maney Publishing

Abstract:

The influence of Cr₂O₃, TiO₂ and ZrO₂ on the sintering, crystallisation and machinability of SiO₂–Al₂O₃–MgO–K₂O–B₂O₃–F glasses was investigated. Optimum fluoromica glass ceramic compositions with desirable sintering behaviour and machinability were obtained by addition of titanium and chromium oxides to the base glass. Texture and relative intensity of mica phase I_mica/I_Si were determined by XRD analysis and the particle size distribution of chips was studied by drilling. Microhardness and bending strength were also investigated. The relative intensity of mica phase and microhardness were found to be compatible with the experimental results.

Keywords: MACHINABILITY; GLASS CERAMICS; SINTERING; FLUOROPHLOGOPITE; MICROHARDNESS

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/096797804X938

Publication date: 2004-10-01

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