The density of a green ceramic body provides valuable information needed to control the quality of a ceramic piece (after sintering) with respect to its final size, porosity and structural integrity.

The quality of a sintered powder compact depends strongly on the quality of green compact (green density and microstructure). The green density determines the amount of shrinkage required to densify a ceramic and has an influence upon the densification rate or the microstructure of the ceramic.

The green density is also important in evolution of processing-related defects (cracking, end-capping, blistering).

Green density tells how well is the powder get compacted before sintering. And as explained in previous comment, according to this we design sintering process strategy.

Dear Dr Akeshwar Singh Yadav

Thak you for the interest on this article. The proportion of the mixed Mn and Si precurssors then pressed (green powder) before insolation corresponds to 45% in volume fraction (it is relatively low because of the grain morphology)

I hope I had answer to your question.

Green density, as mentioned above, is a measure to the toughness of the green compact as well as the effectiveness of the forming and sintering processes. However, sometimes the green density is required for its self like the case in the pharmacy and catalysts industries.

The density of the green powder is strongly dependent of the grain morphology. To have a better compact powder, it is prefereable to have a spherical grains shape with bimodal size distribution.