Sintering behavior

Sintering behavior describes how powders or particulate solids densify, solidify, and bond into a coherent body when heated below their melting temperature. During this process, particle contacts (sintering necks) grow, pores shrink, and the density of the material increases without a complete melt occurring.

It is determined by material composition, particle size, particle size distribution, surface energy, porosity, temperature, holding time, and atmosphere. Fine particles and high specific surface areas generally lead to faster sintering and greater densification.

In process engineering, sintering behavior is an important parameter for the production of ceramics, metals, catalysts, filter materials, and additively manufactured components. It influences the strength, density, pore structure, thermal conductivity, and mechanical properties of the final product.