Method for manufacturing ultrafine W / Cu metal composite powder and high-density bulk material by Meckenochemical method

摘要

1. The technical field to which the invention described in the claims belongs;The present invention relates to a method for producing a high-density bulk material having an ultrafine tungsten / copper binary composite powder and a very fine structure by a mechno-chemical method.;2. Technical challenges to be solved by the invention;It is difficult to increase the density of the W / Cu alloy, the impurity inclusion due to the long milling, and the problems such as the growth of W particles and the complexity of the process due to the high sintering temperature.;3. The point of the solution of the invention;The W-Cu-based oxide mixed powder is prepared by a chemical method using a metal salt as an initial raw material, and then the mixed powder is subjected to milling, (reduction), molding and sintering processes.;4. Important Uses of the Invention;A high-density W / Cu binary bulk material having a fine structure with a W particle size of 1.0 m or less is produced without the addition of a sintering activator to prevent the incorporation of impurities in the manufacturing process, the effect of inhibiting the growth of W particles, and the thermal properties of the material Can be done.