Rheological properties of MgAl_2O_4 obtained from preceramic organomagnesiumoxanealumoxanes

摘要

In this study, a detailed study of ceramic spinel powder obtained by the new method was carried out. Namely, the study of the influence of the pyrolysis temperature of the oligomer and grinding time on the microstructure, phase composition and rheological properties of spinel during pressing. Graphs of the dependences "stress-strain" and "stress - relative density" were obtained, which characterize the rheological properties of aluminium-magnesium spinel obtained in a new way. Analyzing the obtained dependences, we can conclude that with an increase in the pyrolysis temperature, spinel is more natural to deform, which is associated with a change in structure. According to the data obtained, a dependence on the growth of the elastic modulus after grinding is also observed.