HIGH-STRENGTH REFRACTORY COMPOSITE (HRC) AND METHOD FOR MANUFACTURE THEREOF Russian patent published in 2019 - IPC C01B32/21 C04B35/536 B32B18/00 B82B3/00 B82Y30/00 C01B32/194 

FIELD: astronautics.

SUBSTANCE: inventions can be used in the manufacture of materials for aerospace, rocket and military equipment, as well as for the electronics industry. High-strength refractory composite (HRC) is formed as a multilayer structure by multi-pass rolling (MPR) and consists of repeating carbon layer packages in the form of graphite or graphene, as well as metal layers, at least one of which is refractory, and/or metal compounds, which include at least one refractory metal, and/or carbide refractory metal. Refractory metal and carbide of the refractory metal is tantalum and tantalum carbide. Number of carbon layers is 1000 or more per 1 mm of thickness. Minimum thicknesses of carbon layers are 1–3 monatomic layers and are different throughout the thickness of the composite. Sheet of metal foil is loaded into a vacuum chamber through sluice (1), pre-annealed (2) and cold rolled (3). If necessary, the foil or package is subjected to additional effect (4) by a constant and/or alternating magnetic and/or electric field, and/or pressure, and/or heating during the MPR cycles, as well as after the last rolling. Then the foil or package is cut (5). Graphite foil is prepared and pre-annealed in vacuum (6). Graphite foil prepared in this way is applied to the cut piece or package of metal foil (7). After that, package (8) is folded and pressed and finished composite (9) is withdrawn from the vacuum zone through the sluice.

EFFECT: inventions allow to obtain HRC with high mechanical, thermal, electrical properties on an industrial scale and to exclude recrystallization thereof.

12 cl, 7 dwg