You might measure the wettability of the powder using the Washburn Method.

The obtained wetting angle can be used to caculate the interfacial tension. The interfacial tension is then transformed into the surface energy.

Dear Stefan,

Thank you for your answer. Yes , thats the best option , I believe with the help of Young's equation, we can find out surface energy from the values of surface tension.

thanks again.

Regards

Dear Khurram.

I have solved similar problem recently - see my article Fracture energy of selected brittle silicates (in my researchgate profile or in the supplement of this message). It depends on the purpose what you mean. If the application is for mechanical fragmentation, you need to know fracture energy of powder granules, not surface energy of them.

Petr Jandacka

Dear Stefan and Petr,

Thank you so much for your wonderful suggestions. Really appreciate your feedback.

Kind Regards,

Khurram