Effects of sintering temperature on pore characterization and strength of porous cordierite–mullite ceramics by a pore-forming in-situ technique
-
Wen Yan
, Hao Luo , Jun Tong and Nan Li
Abstract
Porous cordierite–mullite ceramics with high strength were prepared by a pore-forming in-situ technique. The phase compositions, pore characteristics, and strength were investigated through X-ray diffractometry, scanning electron microscopy, and a microscopy measurement method. It is found that the sintering temperature strongly affects the formation of cordierite and mullite and the sintering, and thus changes the pore characteristics and strength. The formation of cordierite and mullite takes place on a large scale at 1430°C. The pore size distributions are bimodal in specimens sintered at 1370°C, 1400°C, and 1430°C, and mono-modal in a specimen sintered at 1450°C. The strength increases slightly when the sintering temperature increases from 1370°C to 1400°C, and increases significantly when the sintering temperature is increased to 1430°C. The most appropriate mode is a specimen sintered at 1430°C which has high cordierite (42 wt.%) and mullite content (53 wt.%), high apparent porosity (44%), high compressive strength (30.6 MPa) and a relatively homogeneous pore-size distribution.
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© 2012, Carl Hanser Verlag, Munich
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Articles in the same Issue
- Contents
- Contents
- Original Contributions
- Phase equilibria in the Gd–Ni binary and Mg–Ni–Gd ternary systems
- Thermodynamics of dilute binary solid solutions using the cluster variation method
- Thermal stability of coherent Pd/TiAl interfaces studied from first-principles calculations and experiments
- Electropulsing-induced phase transformations and their effects on the single point diamond turning of a tempered alloy AZ91
- Study of the mechanism of ductile-regime grinding of SiCp/Al composites using finite element simulation
- Investigations on laser welding of magnesium alloys
- Investigation of the surface of a laser-treated cast iron cylinder bore
- Solidification behaviour of an AA5754 Al alloy ingot cast with high impurity content
- Study of the structural evolution of crystalline zinc oxide films prepared by PLD
- Effects of sintering temperature on pore characterization and strength of porous cordierite–mullite ceramics by a pore-forming in-situ technique
- Sol–gel synthesis of Eu3+, Tb3+ co-doped Y2O3 scintillating nanopowders
- Morphological study of SiC coating developed on 2D carbon composites using MTS precursor in a hot-wall vertical reactor
- Self-assembling behavior and corrosion inhibition properties of TDPA films on differently structured surfaces of 2024 and 1060 aluminum alloys
- Photocatalytic activity of MnWO4 powder in highly effective hydrogen generation from H2O and H2O2
- Rheology and microstructure of polymer-modified asphalt nanocomposites
- Short Communications
- Microstructure and phase composition in a die cast Mg–Nd alloy containing Zn and Zr
- DGM News
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