METHOD OF PREPARING A POWDER BASED ON HIGH-MELTING COMPOUND Russian patent published in 1996 - IPC

FIELD: powder metallurgy. SUBSTANCE: titanium powder, activated carbon, nickel powder, and molybdenum powder are loaded into sealed mechanical reactor of vibration mill in amount necessary for formation of tungsten-free solid alloy, weight ratio of loaded balls to initial components being 20:1 and volume of balls constituting 0.4-0.6 part of mechanical reactor space. Reactor is then blown with carbon dioxide. Grinding process is conducted in three steps. In the 1st step, period of grinding constitutes 0.7- 0.8 part of the grinding duration needed for initiation of heat explosion whereupon grinding is interrupted for a period constituting 0.05-0.1 part of the 1st step period followed by repeated grinding during the same period as in previous step. Method provides shortening of the overall process by a factor 1.4 due to carrying out synthesis in conditions of quasi-explosive kinetics. At the same time, safety of the process is increased owing to prevention of heat explosion, and output is raised because of increased one-time loading of components and shortening of process. Method may be applied for preparing tungsten-free solid alloys. EFFECT: enhanced efficiency and safety of process. 2 tbl, 2 dwg