Up to which temperature ultrasound can heat the particle?

Pavel V Cherepanov; Anna Kollath; Daria V Andreeva

doi:10.1016/j.ultsonch.2015.03.002

Up to which temperature ultrasound can heat the particle?

Ultrason Sonochem. 2015 Sep:26:9-14. doi: 10.1016/j.ultsonch.2015.03.002. Epub 2015 Mar 6.

Authors

Pavel V Cherepanov¹, Anna Kollath², Daria V Andreeva²

Affiliations

¹ Physical Chemistry II, University of Bayreuth, Universitaetsstrasse 30, Bayreuth, Germany. Electronic address: pavel.cherepanov@uni-bayreuth.de.
² Physical Chemistry II, University of Bayreuth, Universitaetsstrasse 30, Bayreuth, Germany.

PMID: 25804865
DOI: 10.1016/j.ultsonch.2015.03.002

Abstract

Crystallographic property such as crystallite size has been used for evaluation of the temperature up to which high intensity ultrasound can heat metal particles depending on physical properties of sonication medium and particle concentration. We used >100 μm metal particles as an in situ indicator for ultrasonically induced temperature in the particle interior. Based on powder X-ray diffraction monitoring of Al3Ni2 crystallite sizes after ultrasound treatment the average minimum temperature T particle(min) of sonicated particles in various sonication media was estimated. Additionally, it was found that crystallite size in ultrasonically treated metal particle depends on the frequency of interparticle collision. Through the adjustment of particle concentration, it is possible to either accelerate the atomic diffusion or force the melting and recrystallization processes. Overall, the energy released from collapsing cavitation bubble can be controllably transferred to the sonication matter through the appropriate choice of sonication medium and the adjustment of particle concentration.

Keywords: Crystal size; Particles; Temperature; Ultrasound; Vapor pressure; Viscosity.

Publication types

Research Support, Non-U.S. Gov't