Celsian–fluorophlogopite porcelain based on Egyptian talc

Authors: El-Meliegy, E. M.; Hamzawy, E. M A.

Source: Advances in Applied Ceramics, Volume 104, Number 2, April 2005 , pp. 92-96(5)

Buy & download fulltext article:

Price: $48.00 plus tax (Refund Policy)

Abstract:

Celsian and fluorophlogopite phases have been developed in porcelain using Egyptian talc. Well developed fluorophlogopite with randomly oriented crystals within the glassy phase acts as a reinforcing aid. Hexacelsian crystallises at or below 900°C and then transforms into monoclinic celsian by epitaxial growth. Formation of fluorophlogopite enhances the transformation of hexacelsian to monocelsian. The best conditions for simultaneous crystallisation of a fluorophlogopite and celsian phase mixture are a heating rate of 5 K min^?1 and cooling rate of 10 K min^?1 between 700 and 930°C. A marked shift in the positions of XRD peaks for celsian occurs as a result of the substitutional solid solution between Ba²⁺ and K⁺. Crystallisation of forsterite disappears in the mix with highest silica content. Microhardness decreases at temperatures above 950°C because of transformation of hexacelsian into celsian and the decrease in fluorophlogopite content.

Keywords: MACHINABILITY; CELSIAN; FLUOROPHLOGOPITE; SOLID SOLUTION

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174367605X16590

Publication date: 2005-04-01

More about this publication?

Authors wishing to cite fast track papers should give the journal name and the article DOI. This will enable reference linking via CrossRef and allow forward and backward citation tracking systems to associate the fast track citation with the final journal reference.
This journal features top 10 articles which are freely available. Please click here and click on the 'Top articles' link in the right-hand menu to view the list and start downloading.
Editorial Board
Information for Authors
Submit a Paper
Subscribe to this Title
Terms & Conditions
Online submission site
Top 10 Articles
ingentaconnect is not responsible for the content or availability of external websites