POWDER COMPOSITE MATERIAL AND METHOD OF ITS RECEIVING Russian patent published in 2009 - IPC C22C1/05 C22C21/02 

FIELD: metallurgy.

SUBSTANCE: invention relates to powder metallurgy, particularly it relates to composite material on the basis of aluminium It can be used in the capacity of constructional material for precision instruments of control system and spacecraft navigation. Composite material contains, wt %: silicon 35.0-46.0, nickel 2.0-5.0%, beryllium 0.0001-0.049, alumina 0.1-3.0; carbon 0.5-2.0; aluminium - the rest. Material is received by means of preparation of melt, containing aluminium, silicon, nickel, beryllium, and its dispersion with receiving of alloyed powder. Then it is implemented mechanical alloying of powder by dispersed carbon and silicon with reduction of silicon content in material till 35-46 wt % in nitrogen-oxygenous mixture with content of the oxygen 2-8 vol. %. Received material allows homogeneous disperse structure, that provides high stability of precision properties of elasticity and serviceability of high-precision devices of control systems and navigation while working of proposed material in touch with steel during long operation term.

EFFECT: receiving of material which allows homogeneous disperse structure, that provides high stability of precision properties of elasticity and serviceability of high-precision devices of control systems and navigation while working of proposed material in touch with steel during long operation term.

2 cl, 2 tbl, 5 ex