Flowability, also known as powder flow is a property that defines an ability of a powdered material to flow, related to cohesion.
Powder flowability depends on many traits:
- the shape and size of the powder particles due to intermolecular force,
- porosity
- electrostatic activity
- hygroscopy
- bulk density
- angle of repose
- presence of glidants
- oxidation rate (of a metallic powder)
- humidity
ISO 4490:2018 norm (and its precedent, ISO 4490:2014) standardizes a method for determining the flow rate of metallic powders. It uses a normalized/calibrated funnel, named Hall flowmeter.
See also
References
Karolina Szulc, Andrzej Lenart (2009). "WŁAŚCIWOŚCI KOHEZYJNE WYBRANYCH PROSZKÓW SPOŻYWCZYCH" [Cohesive properties of chosen edible powders] (PDF) (in Polish). Warsaw University of Life Sciences. https://yadda.icm.edu.pl/baztech/element/bwmeta1.element.baztech-article-BAR0-0045-0061/c/httpir_ptir_orgartykulypl111ir1112478pl.pdf ↩
Karolina Szulc, Andrzej Lenart (2009). "WŁAŚCIWOŚCI KOHEZYJNE WYBRANYCH PROSZKÓW SPOŻYWCZYCH" [Cohesive properties of chosen edible powders] (PDF) (in Polish). Warsaw University of Life Sciences. https://yadda.icm.edu.pl/baztech/element/bwmeta1.element.baztech-article-BAR0-0045-0061/c/httpir_ptir_orgartykulypl111ir1112478pl.pdf ↩
"Badanie własności proszków" [Examining properties of powders] (PDF) (in Polish). http://www.kmimp.agh.edu.pl/pliki/cz2.pdf ↩
"ISO 4490:2014". ISO. Retrieved 2022-11-21. https://www.iso.org/cms/render/live/en/sites/isoorg/contents/data/standard/06/51/65132.html ↩