Ultrasonic Effect on the Penetration of the Metallic Melt into Submicron Particles and Their Agglomerates

Deagglomeration and wetting of submicron particles in a metal melt under ultrasonic exposure are considered based on the theory of acoustic cavitation and capillary phenomena. Basic dependences linking the exposure time with physicochemical properties of the particles and the melt, as well as with acoustic radiation characteristics, are found. The experimental and calculated times of ultrasonic treatment of the aluminum melt containing submicron aluminum oxide particles are compared, and a satisfactory agreement of results is found.This study was supported by the Ministry of Education and Science of the Russian Federation in the scope of the Federal Target Program “Research and Developments on Priority Developmental Directions of the Scientific-and-Production Complex of Russia for 2014–2020,” agreement no. 14.587.21.0019; the unique agreement identifier is RFMEFI58715X0019