Research Article
Effect of Rapid Solidification Rates on Preparation of Ni-Pb Alloy Hollow Particles with Low Pb Content
Figure 5
Schematic diagram of the formation of hollow particles. t0: melt rapidly quenched into small droplets; t0∼t1: liquid interface dropped; t1∼t2: droplet surface deepened further; t2∼t3: gas entered into liquid under pressure; t3∼t4: the hole closed inside the droplet; t4∼t5: the hole migrated to the interior of droplet.