It is known that acoustic cavitation is one of the mechanisms resulting in the dispersion of small particles in liquid metallic alloys. Previous research has shown that the contactless electromagnetic method can be used to induce such cavitation and disperse particles in metals, where the application of a high-frequency alternating magnetic field plus a static magnetic field results in pressure oscillations that can become strong enough to disperse particles. Promising results have been obtained on the laboratory scale for some metal/particle pairs such as tin/silicon carbide (Sn/SiC) and chrome steel/titanium nitride (FeCr/TiN). We present herein the idea of combining such electromagnetically induced ultrasound with the application of mechanical ultrasound to a liquid melt to achieve enhanced particle mixing and dispersion. This combined method allows the achievement of a strong oscillating pressure with simultaneous significant stirring of the melt. This approach has the potential to stir and disperse particles in a single-stage process.

中文翻译：

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电磁和机械超声结合在液态金属中的颗粒扩散

众所周知，空化是导致小颗粒分散在液态金属合金中的机制之一。先前的研究表明，非接触电磁法可用于引起这种空化并使金属中的颗粒分散，在高频交变磁场和静磁场的作用下，压力振荡可能会变得足够强大，以分散颗粒。对于一些金属/颗粒对，例如锡/碳化硅（Sn / SiC）和铬钢/氮化钛（FeCr / TiN），在实验室规模上获得了可观的结果。我们在此提出将这种电磁感应的超声与对液体熔体施加机械超声相结合以实现增强的颗粒混合和分散的想法。这种组合的方法可以在剧烈搅拌熔体的同时实现强大的振荡压力。这种方法有可能在单阶段过程中搅拌和分散颗粒。