Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolin

Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolin

Mullite [3Al2O3 2SiO2] was synthesized by reaction sintering of Algerian kaolin of Djebbel Debbagh-Guelma located in the North-East of Algeria and chamotte. The mixture powders of kaolin and chamotte were milled, dried and cold compacted using a uniaxial press. The green samples were sintered for 2 ...

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Main Authors: Alima Mebrek, Hadda Rezzag, Sihem Benayache, Afef Azzi, Yasmina Taïbi, Sabrina Ladjama, Naima Touati, Azzedine Grid, Sabri Bouchoucha
Format: Article
Language:English
Published: Elsevier 2019-09-01
Series:Journal of Materials Research and Technology
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785419308038
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spelling doaj-a4c6b693885b4ea4b375d0228aa8d3c22020-11-25T02:47:41ZengElsevierJournal of Materials Research and Technology2238-78542019-09-018540104018Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolinAlima Mebrek0Hadda Rezzag1Sihem Benayache2Afef Azzi3Yasmina Taïbi4Sabrina Ladjama5Naima Touati6Azzedine Grid7Sabri Bouchoucha8Research Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, Algeria; Corresponding author.Research Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, AlgeriaResearch Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, AlgeriaResearch Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, AlgeriaEcole Nationale Supérieure des Mines et de la Métallurgie, Ex CEFOS Chaiba, BP 233 RP Annaba, W129, Sidi Amar, AlgeriaResearch Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, AlgeriaResearch Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, AlgeriaResearch Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, AlgeriaResearch Center in Industrial Technologies CRTI, P.O. Box 64, Cheraga 16014, Algiers, AlgeriaMullite [3Al2O3 2SiO2] was synthesized by reaction sintering of Algerian kaolin of Djebbel Debbagh-Guelma located in the North-East of Algeria and chamotte. The mixture powders of kaolin and chamotte were milled, dried and cold compacted using a uniaxial press. The green samples were sintered for 2 h at 1350 °C. Powders’ morphology, structure and microstructure of the sintered samples were studied by means of X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD), scanning electronic microscopy (SEM), thermogravimetric and thermodifferential analysis (DTA/TGA) and the helium pycnometer (AccuPyc II 1340).The results showed that DD3 kaolin has a silica content of 41% and alumina of 35%. X-ray analysis revealed that the major phases of the DD3 kaolin was kaolinite along with a muscovite and todorokite. After sintering, the ceramics composite composed mainly of mullite and cristobalite. The added chamotte increases the mullite formation, the apparent density from 2.7 to 2.75 g/cm3, decreases the porosity from 4.70 to 4.43% and a densification higher than 95%. Keywords: DD3 Kaolin, Ceramic, Mullite, XDRhttp://www.sciencedirect.com/science/article/pii/S2238785419308038
collection DOAJ
language English
format Article
sources DOAJ
author Alima Mebrek
Hadda Rezzag
Sihem Benayache
Afef Azzi
Yasmina Taïbi
Sabrina Ladjama
Naima Touati
Azzedine Grid
Sabri Bouchoucha
spellingShingle Alima Mebrek
Hadda Rezzag
Sihem Benayache
Afef Azzi
Yasmina Taïbi
Sabrina Ladjama
Naima Touati
Azzedine Grid
Sabri Bouchoucha
Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolin
Journal of Materials Research and Technology
author_facet Alima Mebrek
Hadda Rezzag
Sihem Benayache
Afef Azzi
Yasmina Taïbi
Sabrina Ladjama
Naima Touati
Azzedine Grid
Sabri Bouchoucha
author_sort Alima Mebrek
title Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolin
title_short Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolin
title_full Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolin
title_fullStr Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolin
title_full_unstemmed Effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of Algerian kaolin
title_sort effect of chamotte on the structural and microstructural characteristics of mullite elaborated via reaction sintering of algerian kaolin
publisher Elsevier
series Journal of Materials Research and Technology
issn 2238-7854
publishDate 2019-09-01
description Mullite [3Al2O3 2SiO2] was synthesized by reaction sintering of Algerian kaolin of Djebbel Debbagh-Guelma located in the North-East of Algeria and chamotte. The mixture powders of kaolin and chamotte were milled, dried and cold compacted using a uniaxial press. The green samples were sintered for 2 h at 1350 °C. Powders’ morphology, structure and microstructure of the sintered samples were studied by means of X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD), scanning electronic microscopy (SEM), thermogravimetric and thermodifferential analysis (DTA/TGA) and the helium pycnometer (AccuPyc II 1340).The results showed that DD3 kaolin has a silica content of 41% and alumina of 35%. X-ray analysis revealed that the major phases of the DD3 kaolin was kaolinite along with a muscovite and todorokite. After sintering, the ceramics composite composed mainly of mullite and cristobalite. The added chamotte increases the mullite formation, the apparent density from 2.7 to 2.75 g/cm3, decreases the porosity from 4.70 to 4.43% and a densification higher than 95%. Keywords: DD3 Kaolin, Ceramic, Mullite, XDR
url http://www.sciencedirect.com/science/article/pii/S2238785419308038
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