Influence of mechanical activation on MgO-Al2O3-SiO2 system in the presence of TeO2 additive

Filipovic, Z Suzana; Obradović, Nina; Djordjevic, G Natasa; Kosanovic, A Darko; Marković, Smilja; Mitric, N Miodrag; Pavlović, B.

doi:10.5937/tehnika1606797f

Cited by 1 publication

(3 citation statements)

References 15 publications

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“…In powders with the addition of TeO2, that trend was not observed: d(0.5) slightly increased with increased mechanical activation, from 4.718 to 4.863, and to 5.064, for MAS-Te-0, MAS-Te-10, and MAS-Te-40, respectively [33]. Based on these results, and trends for d(0.1) and d(0.9), we 5 can conclude that the size of agglomerates and average particles in doped samples increased with the mechanical activation, while smaller particles are decreased.…”

Section: A) B)mentioning

confidence: 88%

“…After 40 minutes of activation, all phases were present along with a greater quantity of newly formed magnesium silicate (33.5 vol. %) [33]. Furthermore, peak intensities were lowered along with very slight broadening, which is characteristic for mechanically activated powders, as a result of attrition of particles and intensive introduction of defects into the crystal lattices during intensive and prolonged milling.…”

Section: A) B)mentioning

confidence: 99%

“…Figure 1 Particle size analysis for a) samples without TeO2, and b) samples with TeO2 addition [33].…”

Section: A) B)mentioning

confidence: 99%

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Kinetics of thermally activated processes in cordierite-based ceramics

Obradović

Blagojević

Filipović

et al. 2018

J Therm Anal Calorim

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Thermally activated processes in cordierite-based ceramics were investigated to determine the effect of the mechanical activation and the addition of TeO2 on kinetic and thermodynamic parameters of these processes. Using a combination of dilatometry and DTA measurements in the 100-1400 o C temperature range, it was established that both the mechanical activation and the addition of TeO2 have a significant effect on processes in cordierite-based ceramics. A combination of 5 mass % addition of TeO2 and mechanical activation for 40 minutes reduced the sintering temperature of cordierite ceramics to around 1100 o C. In addition, the analysis of DTA measurements of mechanically activated samples indicates that the mechanical activation leads to intensification of the cordierite formation through an increase in concentration of surface defects and an increase in grain contact surface in the initial powder.

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Section: A) B)mentioning

confidence: 88%

Section: A) B)mentioning

confidence: 99%