COMPOSITION POWDER FOR PLASMA SPRAYING COATINGS Russian patent published in 1995 - IPC

FIELD: metallurgy. SUBSTANCE: composition powder has titanium particles cladded with nickel layer and additionally cladded with aluminium layer at the following ratio of components in powder, wt.-% aluminium 5-20; nickel 20-70, and titanium the rest. Powder particles size is 45-120 mcm. External cladding aluminium layer is prepared from organometallic aluminium compounds. Coating obtained on the basis of powder has the following indices: microhardness is 30000-35000 MPa; porosity is 2-3% wear resistance is (10-13)·10^-5 g/mm²h; wear resistance at heating to 1000 C is (15-16)·10^-5 g/mm²h. EFFECT: enhanced quality of composition powder. 1 tbl