METHOD OF PRODUCTION OF NANOCRYSTAL POWDER MATERIAL FOR MANUFACTURE OF WILD-STRIP COMPOSITE MATERIAL Russian patent published in 2017 - IPC B22F9/04 B82Y30/00 H01Q17/00 

FIELD: technological processes.

SUBSTANCE: method includes grinding an amorphous tape of magnetic-soft alloy in a hammer mill to particles of 3-5 mm and then grinding in a high speed disintegrator. Heat treatment of the particles obtained after grinding in the hammer mill is carried out with the provision of removing the quenching stresses. Grinding in the disintegrator is conducted to obtain a powder of 100-200 microns. From the obtained powder, 30 wt % of the powder is screened to make the first layer of the composite. The remaining powder of 100-200 mcm is heat-treated to form nanocrystal pre-precipitates, followed by grinding in a disintegrator to obtain a powder of 50-100 mcm. The 50 wt % of the obtained powder is screened to make the second layer of the composite. Heat treatment of the remaining 50-100 mm powder with the formation of a nanocrystal structure is performed, after which it is milled in a disintegrator and screened to obtain a powder of 1-50 mcm to produce the third composite layer.

EFFECT: it is possible to obtain three fractions of the powder in one process cycle and increase the efficiency of grinding.

2 cl, 1 dwg, 1 tbl, 2 ex