Control of Size and Composition of Sn based nanoparticles prepared by Ar-H2 arc

The purpose of this study was to control size and composition of Sn-Ag-Cu nanoparticles prepared by Ar or Ar-H 2 arc. The vaporization and condensation rate should be controlled to prepare alloy nanoparticles. These rates could be controlled by the composition of raw material and H 2 concentration. An increase in H 2 concentration in the arc led to an increase of Cu fraction in prepared nanoparticle. An increase of Sn fraction in nanoparticle made particle size larger. The obtained results indicated that the nanoparticles were spherical shape. Another purpose of this study was to investigate the vaporization mechanism from molten Sn-based alloy with Ar-H 2 arc. The vaporization enhancement of Cu from Sn-Ag-Cu mixture by hydrogen in arc plasma was confirmed. The vaporization enhancement would be attributed to the activity modification by hydrogen in molten metals.