11. ZrB 2 parts are usually densification during sintering. 12. This is due to material densification and a reduction in grain size upon processing. 13. This enhances grain boundary diffusion and migration as well as densification of the material. 14. Densification is the act of reducing porosity in a sample thereby making it more dense.15. Densification of consolidated powder bodies continues to be achieved predominantly by ( pressureless ) sintering.16. Densification requires constant capillary pressure where just solution-precipitation material transfer would not produce densification.17. Densification requires constant capillary pressure where just solution-precipitation material transfer would not produce densification . 18. Ten others employ the post-densification criteria, and finally two more experiment with both. 19. Densification is only achieved at temperatures above 1800 �C once grain boundary diffusion mechanisms become active.20. Temperature dependence for densification controls the process because at higher temperatures viscosity decreases and increases liquid content.
