上游充通大粤 SHANGHAI JIAO TONG UNIVERSITY Introduction:Surface energy Surface energy based on Gibbs free energy dG=-SdT+VaP+ydA OH OF 6A T.P Water droplets try to minimize its Small particles of metals will melt free energy by agglomerating into or sinter into spherical particles arger spherical particles. roIntroduction: Surface energy 3 Water droplets try to minimize its free energy by agglomerating into larger spherical particles. Small particles of metals will melt or sinter into spherical particles