Results 181 to 190 of about 4,688 (226)
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Cordierite-ZrO2 and cordierite-Al2O3 composites obtained by sonocatalytic methods
Journal of Non-Crystalline Solids, 1992Cordierite-matrix-based composites were prepared by the sol-gel process involving sonocatalysis during preliminary chemical reactions. ZrO2 and Al2O3 ceramic fibers were employed as reinforcing phases. Sintering was accomplished by hot-pressing techniques.
M. Piñero, M. Atik, J. Zarzycki
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27Al and 29Si MAS NMR investigations of cordierite glass, μ- and α-cordierite
Solid State Nuclear Magnetic Resonance, 199727Al and 29Si Magic-Angle Spinning NMR results are reported for conventionally prepared glass of cordierite stoichiometry (2MgO.2Al2O3.5SiO2), the metastable high-quartz solid solution (mu-cordierite) and the high-temperature polymorph of cordierite (alpha-cordierite).
W, Storek, R, Müller, G, Kunath-Fandrei
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Journal of Materials Science, 1990
Zirconia-cordierite ceramic composites were fabricated by the hot pressing of cordierite and zirconia powders at 1400 ° C/20 MPa for 10 min. Both the fracture toughness and fracture strength have been enhanced by the addition of zirconia. Such improvements are due to stress-induced transformation toughening and to the generation of residual stresses ...
I. Wadsworth, J. Wang, R. Stevens
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Zirconia-cordierite ceramic composites were fabricated by the hot pressing of cordierite and zirconia powders at 1400 ° C/20 MPa for 10 min. Both the fracture toughness and fracture strength have been enhanced by the addition of zirconia. Such improvements are due to stress-induced transformation toughening and to the generation of residual stresses ...
I. Wadsworth, J. Wang, R. Stevens
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Sic-Reinforced Cordierite Composites Formed by Viscous Sintering of Cordierite Powders
MRS Proceedings, 1991ABSTRACTOne approach for improving mechanical properties of ceramics is to add reinforcing whiskers; however, addition of whiskers often inhibits densification. Formation of SiCcordierite composites by pressureless sintering was studied. The cordierite composites densified by viscous sintering; after densification the amorphous matrix then crystallized.
Anne B. Hardy, Wendell E. Rhine
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Contributions to Mineralogy and Petrology, 2014
In this work, we have reviewed a large compositional dataset (571 analyses) for natural and experimental glasses to understand the physico-chemical and compositional conditions of magmatic cordierite crystallization. Cordierite crystallizes in peraluminous liquids (A/CNK ≥1) at temperatures ≥750 °C, pressures ≤700 MPa, variable H2O activity (0.1–1.0 ...
RIDOLFI, FILIPPO +2 more
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In this work, we have reviewed a large compositional dataset (571 analyses) for natural and experimental glasses to understand the physico-chemical and compositional conditions of magmatic cordierite crystallization. Cordierite crystallizes in peraluminous liquids (A/CNK ≥1) at temperatures ≥750 °C, pressures ≤700 MPa, variable H2O activity (0.1–1.0 ...
RIDOLFI, FILIPPO +2 more
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In-Situ Formation and Coating of Cordierite Whiskers on Cordierite Based Honeycomb Support
Key Engineering Materials, 2006In this work, cordierite whiskers were successfully coated on cordierite honeycomb support by in-situ method. Whisker coating was performed on walls of the pore channels of cordierite support from aqueous slurry. Sintering was carried out at 1300 °C for 4 hours.
Daniel Doni Jayaseelan +4 more
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Nature, 1980
The formulae commonly cited for cordierite usually ignore the occupants of the structural channels that run parallel to the c-axis. Recently, however, it has been shown1 that two of the more common channel occupants, Na+ and molecular H2O, significantly modify cordierite's refractive indices (α, β, γ), optic angle (2Vx), unit cell dimensions, and the ...
Th. Armbruster, F. D. Bloss
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The formulae commonly cited for cordierite usually ignore the occupants of the structural channels that run parallel to the c-axis. Recently, however, it has been shown1 that two of the more common channel occupants, Na+ and molecular H2O, significantly modify cordierite's refractive indices (α, β, γ), optic angle (2Vx), unit cell dimensions, and the ...
Th. Armbruster, F. D. Bloss
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Note on cordierite in a cordierite-gneiss from Madura district, Madras, India
Mineralogical Magazine and Journal of the Mineralogical Society, 1924The specimen of cordierite-gneiss under notice was collected by Mr. T. N. Muthuswami (Assistant Professor of Geology, Presidency College, Madras) in a quarry at Ganguvarpatti in the Madura district. On examining tliin sections of the rock, he found that many of the cordierite crystals were optically positive, and, thinking that the mineral might be ...
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Journal of the American Ceramic Society, 1943
Twenty‐eight ceramic bodies of the three‐component system, MgO‐Al 2 O 3 .SiO 2 , with additions of various fluxes, such as feldspar, beryl, spodumene, nepheline syenite, and other glassforming compositions and ...
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Twenty‐eight ceramic bodies of the three‐component system, MgO‐Al 2 O 3 .SiO 2 , with additions of various fluxes, such as feldspar, beryl, spodumene, nepheline syenite, and other glassforming compositions and ...
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