• Peles, A.
• Obradovic, N.
• Tadic, N.
• Djordjevic, Natasa
• Pavlovic, V. B.

Abstract

<jats:p>Mechanical activation is a commonly used and relatively fast and inexpensiveprocedure for sample preparation before the sintering process. Cordierite, astoichiometric mixture of three different oxides (2MgO?2Al2O3?5SiO2) is avery attractive, widely used high-temperature ceramic material. Themechanical activation of the starting mixtures with 5.00 mass% TiO2 wasperformed in a high energy ball mill during 10-80 min. The applied compactionpressure before the sintering process was 2t/cm2, based on our recentinvestigation. The sintering process was performed at 1350oC for 2h and 4h inair atmosphere. X-ray diffraction was used to analyze the phase compositionof non-activated and 80 min activated samples, sintered for 2 and 4h,respectively. Scanning electron microscopy was performed to analyze themicrostructure of both compacted and sintered samples. Atomic forcemicroscope was used to investigate the surface of the sintered samples. Thispaper investigates the influence of prolonged sintering time on the densitiesof the sintered samples, along with electrical properties.</jats:p>

Topics

• density
• impedance spectroscopy
• surface
• phase
• scanning electron microscopy
• x-ray diffraction
• activation
• sintering
• cordierite