Preparation of Ag/SnO_2 Contact Material by Chemical Deposition

摘要

In order to improve the dispersion of SnO_2 in Ag matrix, Ag/SnO_2 contact materials was prepared by optimized chemical deposition process. The micro-morphology and phase of the Ag/SnO_2 contact materials were tested by metallographic microscope and XRD. The results showed that the combination of mechanical stirring and ultrasonic stirring can effectively improve the dispersion of SnO_2 in Ag matrix, the Vickers hardness, conductivity and density of the Ag/SnO_2 contact materials with 88% Ag content are 114.4HV, 77.4% IACS and 9.75g/cm~3 respectively. These provide data reference for preparation of Ag/SnO_2 contact materials with uniform SnO_2 distribution in Ag matrix.