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International Organization for Standardization (1995) Norme ISO 10545-3. Détermination de l’absorption d’eau, de la porosité ouverte, de la densité relative apparente et de la masse Volumique Globale.

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• TITLE: Optimization of Contents of Three Raw Clay Materials in Formulation of a Porcelain

  AUTHORS: Youssouf Sawadogo, Moustapha Sawadogo, Moussa Ouédraogo, Mohamed Seynou, Gisèle Lecomte-Nana, Philippe Blanchart, Moussa Gomina, Lamine Zerbo

  KEYWORDS: Raw Minerals, Porcelain, Characterization, Chemical Durability and Phase Transformations

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.10 No.1, January 24, 2022

  ABSTRACT: Formulation of traditional hard porcelain generally requires 50% kaolin, 25% silica and 25% feldspar. Four porcelains formulation using the casting method, were prepared with different percentages of kaolinitic clay, sand and pegmatite referenced respectively NONG, SAB and PEG. The physico-chemical, mechanical and mineralogical characteristics were evaluated on specimens formulated and sintered at different temperatures from 1200˚C to 1300˚C. X-ray diffraction has revealed the presence of mullite and quartz as essentially crystalline phases. The specimen formulated with 55% NONG, 25% PEG and 20% SAB and sintered at 1240˚C gives better performance (water absorption: 0.17%, density: 2.42, open porosity: 0.42% and flexural strength: 53.54 MPa).