Quantitative Evaluation of the Wettability of Powders

Experimental investigation of ink on powder used for selective laser sintering

“…This is an unrealistic condition because in this case either W S/L should be 0 or γ L/A should tend to infinity. Stamm et al [5] says that the solid is wetted when the contact angle is less than 90 • and non-wetted when the angle is greater than 90 • in order to be in approximate keeping with visual appearances.…”

“…Wetting is a surface phenomenon [5,6]. When a drop of liquid falls on to a solid surface, wetting can be determined by the contact angle between the droplet and the solid surface (Fig.…”