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Influence de NaCl sur la couleur et la composition chimique des pâtes céramiques calcaires au cours de leur cuisson, Revue d'Archéométrie 13, 43-53.

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Wed, 2015-07-15 10:10 — Hamdallah Bearat
Journal Title, Volume, Page: 
Revue d'Archéométrie Year 1989 Volume 13 Issue 1 pp. 43-53
Year of Publication: 
1989
Link: 
http://www.persee.fr/doc/arsci_0399-1237_1989_num_13_1_871
Authors: 
Béarat H
Current Affiliation: 
Department of Materials Science, Faculty of Engineering and Information Technology, An-Najah National University, Nablus. Palestine
[email protected]
Dufournier D
Ngyuen N
Raveau B
Preferred Abstract (Original): 
The whitening of calcareous ceramics was studied in Mössbauer spectroscopy and X-Rays diffraction. This phenomenon is similar to that which occurs in firing calcareous clays without chloride, but it appears at lower temperature : NaCl accelerates the formation of calcium aluminosilicates susceptible of Fe3+ -trapping. The alkali metals are lost, during firing, in the form of chlorides. Their loss percentage increases from Li to Rb ; it augments also in function of CaCO3 and NaCl proportions.