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Magnetically induced cavitation for the dispersion of nanoparticles in liquid metals

Sarma, M.; Gerbeth, G.; Grants, I.; Kaldre, I.; Bojarevics, A.

Abstract

Dispersion of particles to produce metal matrix nanocomposites (MMNC) can be achieved by means of ultrasonic vibration of the melt using ultrasound transducers. However direct transfer of this method to produce steel composites is not feasible because of the much higher working temperature. Therefore, an inductive technology for contactless treatment by acoustic cavitation was developed. This report describes the samples produced to assess the feasibility of the proposed method for nano-particle separation in steel. Stainless steel samples with inclusions of TiB2, TiO2, Y2O3, CeO2, Al2O3 and TiN have been created and analyzed. Additional experiments have been performed using light metals with an increased value of the steady magnetic field using a superconducting magnet with a field strength up to 5 T.

Keywords: MMC production; Steel composites; Cavitation treatment

  • Contribution to proceedings
    XVIII International UIE-Congress Electrotechnologies for Material Processing, 06.-09.06.2017, Hannover, Deutschland: Vulkan-Verlag GmbH, 978-3-8027-3095-5

Permalink: https://www.hzdr.de/publications/Publ-26938