Fabrication and characterization of porous cordierite ceramics prepared from fly ash and natural minerals |
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| Affiliation: | 1. Department of Energy and Resources Engineering, College of Engineering, Peking University, 100871, Beijing, PR China;2. School of Civil and Resource Engineering, University of Science and Technology Beijing, 100083, Beijing, PR China;1. Afyon Kocatepe University, Department of Material Science and Engineering, Afyonkarahisar, Turkey;2. Dokuz Eylul University, Torbali Vocational School, Izmir, Turkey;3. Dokuz Eylul University, Department of Metallurgical and Materials Engineering, Izmir, Turkey;1. Geology Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt;2. Physics Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt;3. Ceramic Department, National Research Center, Dokki, Cairo 12622, Egypt;4. Institute of Materials Science, Leipzig University, Leipzig D-04275, Germany;5. Geology Department, Institute of Geology and Geography, Martin-Luther University, Von Seckendorff-Platz 3, Halle (Saale) 06120, Germany;1. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37934, USA;2. BAM Federal Institute for Materials Research and Testing, Berlin D-12200, Germany;3. Reliability Division, Rolls Royce LG Fuel Cell System Inc., North Canton, OH 44720, USA;4. Ceramics and Catalyst Technology, Cummins, Inc., Columbus, IN 47201, USA;1. Dipartimento di Ingegneria Industriale, Università degli Studi di Padova, Via Marzolo 9, 35131 Padova, Italy;2. Ceramics Department, National Research Centre, El-Bohous Street, 12622 Cairo, Egypt;1. CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, PR China;2. Ningbo Urban Environment Observation and Research Station-NUEORS, Chinese Academy of Sciences, PR China;3. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, PR China;4. Materials and Surface Science Institute (MSSI), University of Limerick (UL), Ireland |
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| Abstract: | ![]()
Low cost, single-phase porous cordierite ceramics are successfully synthesized by in-situ solid-state reactions from fly ash, quartz, and magnesite. The effects of sintering temperature and magnesite content on phase transformation, open porosity, bulk density, mechanical properties, and microstructure are carefully investigated. Factsage analyses are carried out to calculate the isopleth diagrams, and the results agree well with the experimental outcomes. Thermal gravimetric and differential scanning calorimeter analyses (TG-DSC) are performed to characterize the weight loss and transient behaviors of the raw materials. Linear thermal expansion properties are also studied. The α-cordierite phase is the only phase observed in S-3 (magnesite content 25%) sintered at 1300 °C for 2 h, and its linear thermal expansion coefficient (2.71 × 10−6 K−1) is close to that of typical cordierite. Both the compressive strength (72.64 MPa) and flexural strength (23.92 MPa) of the as-synthesized samples are high with an open porosity of 33.16% and a bulk density of 1.61 g/cm3. |
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| Keywords: | Solid waste Fly ash Cordierite ceramics Porous |
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