METHOD OF MAKING OF COMPOSITE MATERIAL - PSEUDOALLOY Russian patent published in 2015 - IPC B22F3/12 C22C1/04 

FIELD: metallurgy.

SUBSTANCE: charge is prepared containing metal components of specified composition of the pseudoalloy by their mixing, the prepared charge is pressed. Billet is annealed in vacuum at pressure 1.33×10^-2 Pa maximum, at temperature 300°C minimum and not exceeding melt temperature of low-melting component of the pseudoalloy for at least 1 h. Pseudoalloy billet is sintered in hydrogen atmosphere by two stages. At the first stage heating to temperature 800°C minimum is performed, at the second stage - to sintering temperature of specified charge with holding at these temperatures for at least 1 h, respectively. After sintering additionally axial pressing of the pseudoalloy billet is performed at pressure decreasing from 300 MPa to 80 MPa with rate 80 MPa/min max.

EFFECT: increased electrical conductivity and thermal conductivity of the composite material due to increasing of its homogeneity and reduction of temperature coefficient of linear expansion upon keeping high limit density.

2 cl, 1 tbl, 6 ex