Master sintering curve with dissimilar grain growth trajectories: A case study on MgAl2O4

Sintering is a key step in the processing of high performance ceramics. Both the density and the grain size play a crucial role on the ceramic sintering kinetics and the final material properties. The master sintering curve (MSC) is a well-known tool for exploring sintering models kinetics. However, the conventional MSC theory assumes a unique sintering trajectory, while our study on MgAl2O4 spinel shows dissimilar growth response. Park's MSC theory has been applied and compared with the conventional MSC approach for obtaining the activation energy with and without dissimilar grain growth trajectories.

Automated summary

Sintering is a crucial step in processing high-performance ceramics, with the master sintering curve (MSC) commonly used to explore sintering kinetics. However, research on MgAl2O4 spinel has shown dissimilar growth responses, challenging traditional MSC theories. Park's MSC theory has been applied and compared to conventional approaches for determining activation energy in cases of differing grain growth trajectories.