How do you calculate the hardness of a powder particle?

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Jonas Paul

hardness = load / contact area

Sushrut Marathe

Thanks for the answer Jonas, I need experimental method.

It is possible to calculate hardness from single particle compression experiments according to Abbott and Firestone or CEB model. However, hardness might change with strain. Detailed information you find here: DOI:10.1016/j.apt.2013.09.009

Mallikarjunachari G

Nanoindentation is a better method to calculate the hardness of the powder particle. Different shape indenters such as Berkovich and cylindrical indenter can be used for experiments. For more details go through below links. These articles might be helpful.

http://onlinelibrary.wiley.com/doi/10.1002/app.43532/full

http://www.sciencedirect.com/science/article/pii/S0032386116301227

Kudama Habib Ameen

Nanoindentation is a suitable method to determine the hardness of powder particles.