Our graduate student, Eng. Sueda Eslem Kurt, participated in the 21st International Conference on Engineering & Natural Sciences and presented her paper entitled “Modification of Silicon Nitride Particle Surfaces of Different Sizes with a Calcium Phosphate Layer” as an online oral presentation. In this study, the surfaces of silicon nitride particles with different particle sizes were modified with a calcium phosphate layer. The high-temperature thermal stability of the produced particles was compared, and their potential applicability in high-temperature sintering processes was investigated.