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  • Cordierite - an overview | ScienceDirect Topics
    Cordierite granites The cordierite granites have the greatest crustal affinity, though in some ways their petrogenesis and magmatic evolution is the most problematic In a general sense, the petrography and geochemistry of these plutons accords with derivation from aluminous metasedimentary protoliths (Chappell and White, 1974) Such a process
  • Cordierite - an overview | ScienceDirect Topics
    Cordierite is a ring silicate, typically with low refractive indices and birefringence, and in thin section tends to be confused with quartz or feldspars Twinning is known on {110} and {310}, forming simple, lamellar, or cyclic twins
  • Mechanism of cordierite formation obtained by high temperature . . .
    However, cordierite has a very narrow sintering temperature, so the sintering of high-purity cordierite is challenging [9, 10] Various procedures, such as adding sintering aids to raw materials and switching to natural minerals and solid waste, have been extensively investigated to reduce the sintering temperature [ [11] , [12] , [13] ]
  • Microstructure, thermal expansion, hardness and thermodynamic . . .
    The cordierite ceramics (samples DT04M and DT08M) showed lower values of CTE compared with monolithic cordierite (sample DT00M) Sample DT008 possessed the lowest value of CTE demonstrating a decrease of 31 3% with respect to monolithic cordierite The low CTE values of cordierite ceramics may be due to the sapphirine phase
  • Cordierite synthesis. A time-resolved neutron diffraction study
    In order to elucidate the mechanism of reaction during the cordierite synthesis a kinetic study has been carried out by means of X-ray diffraction and neutron thermo-diffraction It was thus possible to elucidate between the reactions leading to the cordierite synthesis and those that gave rise to the undesired phases generated during this process
  • Comprehensive chemical analyses of natural cordierites: implications . . .
    Cordierite samples from pegmatites and metamorphic rocks have been analysed for major [electron microprobe analysis (EMPA)] and trace elements [inductively coupled plasma mass spectrometry (ICP-MS), secondary ion mass spectrometry analyses (SIMS)] as well as for H 2 O and CO 2 (coulometric titration), and the results evaluated in conjunction
  • Microstructure, thermal conductivity, and temperature-dependent . . .
    Cordierite, 2MgO 2Al 2 O 3 5SiO 2, is widely applied in the industrial field as a carrier coated with washcoat or catalyst and radiant heating agent owing to its low coefficient of thermal expansion (CTE, ~2 0 ×10 −6 K –1), low dielectric constant (about 5 0 at 1 MHz), and high chemical stability [1]
  • Effect of sintering temperature on the thermal and mechanical . . .
    Cordierite-based membranes were elaborated from Ghassoul clay and algae as porosity agent [23] In this paper, the cordierite-based ceramics were successfully synthesized by a solid-state reaction technique from a mixture of Ghassoul clay, kaolin and alumina, according to the stoichiometric ratio of cordierite (2MgO 2Al 2 O 3 5SiO 2 )
  • Fabrication and characterization of porous cordierite ceramics prepared . . .
    Three forms of cordierite have been discovered: α-cordierite (hexagonal, P6 mcc), β-cordierite (orthorhombic, Cccm) and μ-cordierite (a meta-stable modification) [8] The α-cordierite, which is also known as indialite, is the most common form found in ceramic bodies, while the other two forms are much less common and they can revert to the
  • Thermal and mechanical properties of cordierite, mullite and steatite . . .
    Crystalline cordierite is a major component of so-called cordierite ceramics This type of ceramics consists of the MgO:Al 2 O 3:SiO 2 ternary system components in the 2:2:5 ratio Cordierite ceramics is used mainly in applications requiring high thermal shock resistance, thanks to its very low coefficient of thermal expansion





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