SEM can be used to estimate the particle sizes of powder but If the powder is sintered then from SEM images of bulk sample, they are not said to be particle size anymore but grain size? Am I correct? If yes, then why is so?
Thank you.
Hi
actually, a particle can be made of 1 or 2 or 3 or more grains. The surface roughness of particle (observable by SEM) can not say any thing about the grains of the materials. If the grain size of a material be smaller than 100 nm, you can use XRD for grain size determination.
Regards
Dear Muhammad Hussein,
I cannot download the article. Can you please allow the access for downloading?
Regards,
Yes Riaz you are correct.
Please consider the coarsening phenomena as a result of powder sintering. In this respect I refer to item 3.7 of my recent article on Researchgate.
I am glad to request your feedback . https://www.researchgate.net/publication/313464375_Investigating_the_effects_of_calcination_temperatures_on_the_structure_of_modified_nanosilica_prepared_by_sol-gel
Article Investigating the effects of calcination temperatures on the...
Dear Abdullah Riaz
Please look at attached file
Best regards
Dear Riaz,
From my point of view, the grain size is the size of the grains in the sintered bulk materials (please check the sintering theory). However the particle size is associated with powdered materials.
Best Regards,
Fatih.
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