METHOD FOR PREPARING SILVER-BASED OXIDE ELECTRICAL CONTACT MATERIAL WITH ORIENTED PARTICLES

摘要

A method for preparing silver-based oxide electrical contact material with oriented particles involves: producing complex powder by chemical co-precipitation method combined with sintering; granulating by high-energy ball-milling and sieving; mixing the powder and matrix Ag powder; cold isostatic pressing; sintering; hot pressing; and hot extruding. The method can produce particle-reinforced silver-based material having good electric properties, even with fine reinforcing particles, in a simple, easy and low-cost manner without special requirements for devices. The material produced by the method has improved melt-welding resistance, electric arc erosive resistance and electric conductivity, and shows an excellent processing performance.