Mechanisms of ultrasonic de-agglomeration of oxides through in-situ high-speed observations and acoustic measurements.

ABSTRACT: Ultrasonic de-agglomeration and dispersion of oxides is important for a range of applications. In particular, in liquid metal, this is one of the ways to produce metal-matrix composites reinforced with micron and nano sized particles. The associated mechanism through which the de-agglomeration occurs has, however, only been conceptualized theoretically and not yet been validated with experimental observations. In this paper, the influence of ultrasonic cavitation on SiO₂ and MgO agglomerates (commonly found in lightweight alloys as reinforcements) with individual particle sizes ranging between 0.5 and 10 μm was observed for the first time in-situ using high-speed imaging. Owing to the opacity of liquid metals, a de-agglomeration imaging experiment was carried out in de-ionised w

SUBMITTER: Priyadarshi A 

PROVIDER: S-EPMC8524947 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature