Academic literature on the topic 'Porous mullite ceramics'

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Journal articles on the topic "Porous mullite ceramics"

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Wu, Rina, Chaochao Wang, Guodong Xu, et al. "Preparation and Characteristics of Porous Mullite Ceramics by 3D Printing and In-Situ Synthesis." Materials 18, no. 5 (2025): 956. https://doi.org/10.3390/ma18050956.

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In-situ porous mullite ceramics with varying pore size and porosity were fabricated using 3D printing. The pore size was controlled by adjusting the size of polymethyl methacrylate (PMMA) microspheres. The effect of sintering temperature on phase evolution was also examined. Additionally, the impact of PMMA microsphere size and content on the rheological properties of the printing inks was investigated. The results indicated that alumina and microsilica fully transformed into mullite at 1550 °C. The influence of PMMA microsphere content and size on the porosity, mechanical properties, and ther
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Lin, Ya Mei, Cui Wei Li, Feng Kun Yang, and Chang An Wang. "Fabrication and Properties of Porous Anorthite⁄Mullite Ceramics." Key Engineering Materials 512-515 (June 2012): 590–95. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.590.

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Porous anorthite/mullite composite ceramics with different mullite content were fabricated by foam-gelcasting, using CaCO3, SiO2, α-Al2O3as raw material for anorthite phase and mullite powder for mullite phase. Effects of mullite powder content on bulk density, porosity, compressive strength and thermal conductivity of the porous composite ceramics were researched. It has been shown that mullite powder content has great effect on microstructure and properties of the porous anorthite⁄mullite composite ceramics. The open porosity of the prepared porous anorthite⁄mullite composite ceramics is in
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Mahnicka-Goremikina, Ludmila, Ruta Svinka, Visvaldis Svinka, et al. "Porous Mullite Ceramic Modification with Nano-WO3." Materials 16, no. 13 (2023): 4631. http://dx.doi.org/10.3390/ma16134631.

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Mullite and mullite–alumina ceramics materials with dominance of the mullite phase are used in different areas of technology and materials science. Porous mullite ceramics materials can be used simultaneously as refractory heat insulators and also as materials for constructional elements. The purpose of this work was to investigate the WO3 nanoparticle influence on the evolution of the aluminum tungstate and zircon crystalline phases in mullite ceramics due to stabilization effects caused by different microsize ZrO2 and WO3. The use of nano-WO3 prevented the dissociation of zircon in the ceram
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Lang, Ying, Chang An Wang, and Jun Zhou. "Fabrication and Properties of Mullite Fiber-Reinforced Porous Mullite Ceramics." Key Engineering Materials 512-515 (June 2012): 586–89. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.586.

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Porous mullite ceramics reinforced by mullite fiber have been prepared by vacuum filtering with MgO as sintering aid and starch as pore-forming agent. The influence of different sintering temperature and mullite fiber content on porosity and strength of porous mullite ceramics was investigated. The results showed that the compressive strength of the mullite ceramics increased with increasing sintering temperature. With the increase of mullite fiber content, the compressive strength of porous mullite ceramics appeared to increase at first and then decrease. And the peaking strength could reach
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Chao, Yang. "Study on the Properties of SiC/Mullite Porous Ceramics Based on ANSYS Numerical Simulation." Applied Mechanics and Materials 608-609 (October 2014): 976–80. http://dx.doi.org/10.4028/www.scientific.net/amm.608-609.976.

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In this paper, we use foam injection coagulation method to fabricate SiC/mullite porous ceramic with porosity 38-80%. In order to study the performance of the ceramic, we use the principle of cavity to establish the fourteen surfaces model of the SiC/ mullite porous ceramics, and use the ANSYS finite element simulation software to simulate the performance of ceramic, and do simulation on the mechanical properties of the ceramics. In order to study the influence of different wall thickness and curvature on the properties of ceramics, we calculate the structure stress distribution of fourteen su
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Liao, Rong, Chong Hai Wang, Jian Liu, Hong Sheng Wang, and Qi Hong Wei. "Porous Nitride Ceramic Composites with Low-Dielectric Properties." Key Engineering Materials 512-515 (June 2012): 849–53. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.849.

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The influences of the mullite hollow balls content on selected properties of Si3N4-BN matrix ceramics were investigated.The experiment showed that the apparent densities and the porosity of the nitride ceramic composites decreased as the mullite hollow balls contents increased.The strength of the porous nitride ceramic composite was greatly improved, and the dielectric constant decreased with a small addition of the mullite hollow balls. SEM micrographs showed that the mullite hollow balls became one flesh with the nitride ceramic composites.Many large pores appeared in the whole materials. Th
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Xu, Na Na, Shu Jing Li, Yuan Bing Li, Lin Yuan, Jin Long Zhang, and Lei Wang. "Effects of Sintering Temperature and Porogen Addition on Properties of Low Cost Porous Mullite Ceramics." Key Engineering Materials 655 (July 2015): 114–17. http://dx.doi.org/10.4028/www.scientific.net/kem.655.114.

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In the present paper, low cost porous mullite ceramics with high porosity, high strength and low thermal conductivity were fabricated using ceramic waste powder and clay as raw materials, and sawdust as porogen. The correlation of phase composition and physicochemical properties of such porous mullite ceramics were researched by varying sintering temperature and the extra addition of sawdust. The results show that: The ceramics show the best comprehensive properties when the sintering temperature is 1400 oC and the addition of sawdust is 30wt%. The results of SEM and EDS analysis confirm that
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Yang, Hong-Liang, Zi-Shen Li, You-Dong Ding, Qi-Qi Ge, Yu-Juan Shi, and Lan Jiang. "Effect of Silicon Source (Fly Ash, Silica Dust, Gangue) on the Preparation of Porous Mullite Ceramics from Aluminum Dross." Materials 15, no. 20 (2022): 7212. http://dx.doi.org/10.3390/ma15207212.

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Aluminum dross (AD) is a waste product produced during aluminum processing and can be used to prepare mullite ceramic materials. However, the research on the preparation of mullite porous ceramics entirely from solid waste is still in the development stage. In this paper, porous mullite ceramics were successfully fabricated using a solid-phase sintering process with AD and different silicon sources (fly ash, silica dust, and gangue) as raw materials. The bulk density, apparent porosity, and compressive strength of the specimens were obtained, and the phase compositions and microstructures of t
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Zhang, Hongyao. "Preparation of Porous Ceramic Building Decoration Materials by Foaming Method and Research on Nanomechanical Properties." International Journal of Analytical Chemistry 2022 (May 14, 2022): 1–7. http://dx.doi.org/10.1155/2022/8339503.

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Because of its excellent properties, mullite porous ceramics are widely used in thermal insulation materials, catalyst carriers, gas-liquid filtration, separation materials, etc. At the same time, zirconia not only has the advantages of high melting point, good chemical stability, and high strength but also can significantly improve the strength of ceramics through phase transformation and particle dispersion in the matrix and is widely used in the reinforcement of ceramics. In this paper, using mullite powder as the raw material, Al2O3 and SiO2/ZrSiO4 as the starting material for the mullite
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Sedmale, Gaida M., I. Sperberga, A. Hmelov, U. Sedmalis, and A. Actins. "Phase Formation and Structure of Mullite-Alumina-Zirconia and Spinel-Enstatite Ceramics Developed from Synthetic and Mineral Raw Materials." Materials Science Forum 575-578 (April 2008): 953–58. http://dx.doi.org/10.4028/www.scientific.net/msf.575-578.953.

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New dense and porous ceramics are developed using two formulation approaches. These are ceramics with remarkable content of mullite, corundum and ZrO2 - tetragonal and monoclinic in crystalline phase and porous (average size of pores up to 150-350μm) spinel-enstatite/forsterite ceramics. To promote the phase development by high-temperature synthesis of these ceramics the mineral raw materials – illite clay and illite clay together with dolomite are used. Bulk density for mullite (corundum) – zirconia ceramics is increased by equal addition of illite clay (8.2 wt.%) as well as ZrO2 and especial
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Dissertations / Theses on the topic "Porous mullite ceramics"

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Fernandes, Leandro. "Desenvolvimento e controle da microestrutura de cerâmicas porosas à base de mulita para aplicações em isolamento térmico de alta temperatura." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-05092018-084646/.

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Mulita é um aluminosilicato com aplicações em sistemas de altas temperaturas como filtração de gases, elemento estrutural, suporte catalítico e isolante térmico. Na natureza, a mulita é pouco abundante e por este motivo é sintetizada via reação do estado sólido entre precursores contendo alumina e sílica. Nesta tese foi estudado o efeito de diferentes tipos de sílicas amorfas sintéticas (sílica precipitada, microssílica, sílica da casca de arroz e sílica da cinza da casca de arroz). Resultados obtidos demonstraram que quanto maior for a porosidade interna das partículas maior é o ganho em módu
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Sousa, Lucíola Lucena de. "Desenvolvimento e caracterização de cerâmicas porosas moldáveis à base de alumina-mulita para uso como isolamento térmico em altas temperaturas." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-16112015-161700/.

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Com o objetivo de reduzir o consumo energético, tem crescido o uso de cerâmicas porosas refratárias como isolantes térmicos para altas temperaturas. Entre as técnicas comumente empregadas na produção desses materiais, destaca-se aquela baseada na geração de poros por meio de transformação de fases. Esse método, que não libera voláteis tóxicos, apresenta uma importante limitação em relação ao uso prolongado em altas temperaturas: os compostos de transição formados após a desidroxilação tendem a acelerar a sinterização, reduzindo a porosidade. É bastante conhecido o fenômeno de que, durante a si
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Kujmar, Kundrapu Shyam. "Fabrication and Characterization of Porous Mullite Ceramics." Thesis, 2018. http://ethesis.nitrkl.ac.in/9583/1/2018_MT_216CR2129_KSKujmar_Fabrication.pdf.

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Porous mullite ceramics with varying pore former are prepared by using naphthalene as the pore former. These samples are sintered at 1400oC, 1500oC and 1600oC. The pore former used in the range of 0% to 40%. The effect of pore former on the porosity generation is studied in detail. It is observed that with the increase of naphthalene content the apparent porosity increases up to a range of 60-70%. The effect of pore former on mullite phase formation is also analysed in detail. The microstructural study and mechanical properties are also covered. From the knowledge of the earlier studies it is
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Anand, Abhishek. "Processing and Characterisation of Porous Mullite Via Synthetic Template Replica Method." Thesis, 2017. http://ethesis.nitrkl.ac.in/8792/1/2017_MT_A_Anand.pdf.

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Porous Mullite ceramics finds numerous advanced engineering applications including aerospace, molten metal filtration, catalysis, refractory insulation, and hot gas filtration. The application of mullite for this purpose requires inclusion of continuous and homogeneous macro porosity with sufficient strength to withstand mechanical impacts and loads. Mullite is used as material due to its properties-such as low thermal expansion, high thermal shock resistance, and high creep resistance as well as excellent chemical inertness. In this work the porous mullite samples have been prepared using sil
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Books on the topic "Porous mullite ceramics"

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Viens, Michael J. Mechanical properties of a porous mullite material. National Aeronautics and Space Administration, Goddard Space Flight Center, 1991.

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Fabrication of Ceramic Matrix Composite Tubes Using a Porous Mullite/ Alumina Matrix and Alumina/Mullite Fiber. Storming Media, 2001.

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Book chapters on the topic "Porous mullite ceramics"

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Adziski, Ranko, Emilija Fidancevska, Joerg Bossert, and Milosav Milosevski. "Porous Mullite Ceramics for Advanced Sensors." In Nanotechnological Basis for Advanced Sensors. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0903-4_9.

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Wang, Ning, Xiao Zhan Yang, Jian Bao Li, Hong Lin, and Bo Chi. "Fabrication and Characterization of Porous Mullite Coating on Porous Silicon Carbide Support." In High-Performance Ceramics III. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-959-8.1301.

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Wang, Hui, and Ling Ke Zeng. "Preparation and Structure Characterization of Mullite Fiber Porous Ceramic." In High-Performance Ceramics V. Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-473-1.809.

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Hua, Yao Ai, Ke Yang, and Ruo Ding Wang. "Fabrication of Tubular Mullite-Alumina Porous Ceramics by Polymer-Aided Extrusion." In Materials Science Forum. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-966-0.333.

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Gregorová, E., W. Pabst, and T. Uhlířová. "Microstructure and Elastic Properties of Highly Porous Mullite Ceramics Prepared with Wheat Flour." In Ceramic Transactions Series. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119234593.ch9.

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Mazerolles, L., D. Michel, T. di Costanzo, and J. L. Vignes. "New Developments in Nanometric Porous Mullite, Spinel, and Aluminas." In Ceramic Transactions Series. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118380826.ch20.

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Holmquist, M., L. Hoffer, A. Kristoffersson, and R. Lundberg. "Aluminium Phosphate Bonded Oxide Fibre Reinforced Porous Mullite-Based Matrix Composites." In High Temperature Ceramic Matrix Composites. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527605622.ch95.

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Li, Wenle, Margaret Anderson, Kathy Lu, and John Y. Walz. "Fabrication of Porous Mullite by Freeze Casting and Sintering of Alumina-Silica Nanoparticles." In Ceramic Transactions Series. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118511428.ch6.

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Bardhan, Neelkanth, and Parag Bhargava. "In-Situ Reaction Sintering of Porous Mullite-Bonded Silicon Carbide, Its Mechanical Behavior and High Temperature Applications." In Mechanical Properties and Processing of Ceramic Binary, Ternary, and Composite Systems. John Wiley & Sons, Inc., 2009. http://dx.doi.org/10.1002/9780470456361.ch13.

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Conference papers on the topic "Porous mullite ceramics"

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Kiran, Gandla Sai, Kundrapu Shyam Kumar, Amit Kumar Yadav, and Sunipa Bhattacharyya. "Fabrication and characterization of porous mullite ceramics." In DAE SOLID STATE PHYSICS SYMPOSIUM 2018. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112863.

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Kiran, Gandla Sai, Jyothi Mukthapuram, Amit Kumar Yadav, and Sunipa Bhattacharyya. "Effect of MoO3 additive on fabrication of mullite based porous ceramics." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PHYSICS OF MATERIALS AND NANOTECHNOLOGY ICPN 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0009333.

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Yadav, Amit Kumar, Swetoja Patel, and Sunipa Bhattacharyya. "Preparation of low-cost porous mullite ceramics by recycling fly ash." In ADVANCES IN BASIC SCIENCE (ICABS 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5122332.

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Zievers, J. F., P. Eggerstedt, P. Aguilar, and E. C. Zievers. "Substitution of Lightweight Ceramics for Alloy and Silicon Carbide in a Hot Gas Filter." In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-213.

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Ceramic candle filters have proven to be an effective means of removing particulates to levels exceeding New Source Performance Standards (NSPS) in high temperature applications. The traditional “hard” ceramic filter elements, typically formed from granules of silicon carbide, mullite, etc., however, have shown to be susceptible to failure from physical shock, thermal stress, and chemical attack. Additionally, these hard, dense candles can be costly and present internal filter design problems due to their relatively high weight. A good deal has been written about the use of porous ceramics in
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Zafred, Paolo R., Stephen W. Sofie, and Paul S. Gentile. "Progress in Understanding Silica Transport Process and Effects in Solid Oxide Fuel Cell Performance." In ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2010. http://dx.doi.org/10.1115/fuelcell2010-33297.

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One of the enabling technologies required for commercialization of high efficiency solid oxide fuel cell (SOFC) stacks is the development of low cost ceramic refractories capable of withstanding the harsh environment during start-up and steady state operation. Although low density, high purity fibrous alumina materials have been used for more than two decades in manufacturing of SOFC stack components, their low mechanical strength and high cost have precluded their use in the next generation pre-commercial generator modules. A current trend in SOFC stack design is to use high strength, low pur
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Ruggles-Wrenn, M. B., and S. R. Hilburn. "Creep in Interlaminar Shear of an Oxide/Oxide Ceramic Matrix Composite at Elevated Temperature." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-44034.

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Creep behavior in interlaminar shear of an oxide-oxide ceramic composite was evaluated at 1100°C in laboratory air and in steam environment. The composite (N720/AS) consists of a porous aluminosilicate matrix reinforced with laminated, woven mullite/alumina (Nextel™720) fibers, has no interface between the fiber and matrix, and relies on the porous matrix for flaw tolerance. The interlaminar shear properties were measured. The interlaminar shear strength (ILSS) was determined as 7.6 MPa. The creep behavior was examined for interlaminar shear stresses in the 2–6 MPa range. Primary and secondary
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Harkins, Megan, and Marina Ruggles-Wrenn. "To Drill or Not to Drill? - Creep of an Oxide-Oxide Composite With Diamond-Drilled Discharge Holes at Elevated Temperature." In ASME Turbo Expo 2022: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/gt2022-83270.

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Abstract Ceramic matrix composites (CMCs) are leading contenders for use in aircraft engines. Yet even with their high-temperature capabilities, many CMC components will need cooling. External or film cooling technique of a component requires rows of small holes through the component surface. Effects of multiple small holes on tensile stress-strain and tensile creep resistance of an oxide fiber-oxide matrix composite comprising Nextel™720 alumina-mullite fibers and a porous alumina matrix were evaluated at 1200°C. Gauge section of each test specimen included seventeen (17) 0.5-mm diameter hole
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