METHOD FOR PRODUCING POWDER MATERIAL FOR APPLYING GAS THERMAL COATINGS Russian patent published in 1997 - IPC

FIELD: powder metallurgy, in particular, production of oxide powder materials. SUBSTANCE: method involves forming hollow spherical particles of 20-400 micron size; selecting particles of base fraction in accordance with ratio of d = βd_o, where d is size of base fraction particles; d_o is size of continuous particles of the same composition, which are normally used in the process of deposition; β is particle size increase coefficient, with b being selected within the range of values of 1≅β≅(1-α³)^-1 for materials with heat conductivity exceeding 10 Wt/K/m and within the range of values of 1≅β≅(1-α)^-1(1+α+α²)^1/3 for materials with heat conductivity less than 10 Wt/K/m, where α is ratio of cavity effective size and particle size, with a = 0.2-0.95. EFFECT: increased efficiency, wider operational capabilities and improved quality of powder materials produced by method. 1 tbl