Mechanochemical effect on synthesis and sintering behavior of MgAl2O4 spinel

This research work accomplishes the mechanochemical effect on synthesis and sintering behavior of MgAl2O4 spinel prepared by separate vibrating ball milling (VBM) and planetary micro-milling (PMM-P7) processes. The pure stoichiometric magnesium aluminate spinel (MgAl2O4 ) was produced from the precursors [Mg(OH)(2) & AlOOH], and their densification at an optimum sintering profile. Non-gelation, soft agglomeration, and compressive stress induced by micro-milling in ethanol solvent facilitated the pure phase at low calcination temperature and confirmed through TEM. Eventually, the formation of nanoscale (25 nm) particles, similar to 98% densification, and grain size (38 mu m) in atmospheric sintering are being achieved through planetary micromilling. Critical discussion on the effect of planetary micro-milling is emphasized to understand the enhanced densification and optimum grain size that may expedite to development of other oxide particles and dense ceramics.

Automated summary

This research explores the mechanochemical effect of vibrating ball milling and planetary micro-milling processes on the synthesis and sintering of MgAl2O4 spinel. The use of micro-milling in ethanol solvent aids in achieving pure phase and optimum grain size, leading to the development of nanoscale particles and dense ceramics.