Characterisation of some Clays Used for Whiteware Ceramics I. Mineralogical composition
In order to obtain a semiquantitative mineralogical composition of raw materials used for whiteware ceramics, four different clay types were analysed by X-ray diffraction. Studies were carried out by using a combination of analyses of the bulk sample, and of the fine fraction. Using a well-establish...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Cluj University Press
2002-04-01
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| Series: | Studia Universitatis Babes-Bolyai: Geologia |
| Online Access: | http://scholarcommons.usf.edu/geologia/vol47/iss1/art1/ |
| Summary: | In order to obtain a semiquantitative mineralogical composition of raw materials used for whiteware ceramics, four different clay types were analysed by X-ray diffraction. Studies were carried out by using a combination of analyses of the bulk sample, and of the fine fraction. Using a well-established pre-treatment methodology (use of chemicals, ultrasonic treatment, dispersion procedures), clay mineral concentration by centrifugation and sedimentation, oriented and random powder preparation, cation saturation, expansion/dehydration methods, 12 X-ray diffractometer traces were obtained from each sample. Based on these informations it was possible to establish the qualitative mineralogical composition, and also a semiquantitative one using peak intensities and peak area corrected by various factors. Scanning electron microscopy was also used in order to illustrate the identified mineral phases.
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| ISSN: | 1221-0803 1937-8602 |