BASED ON COPPER AND REFRACTORY MATERIALS COMPOSITION MATERIALS PRODUCTION METHOD Russian patent published in 1995 - IPC

Abstract SU 1615996 A1

FIELD: powder metallurgy. SUBSTANCE: billets are produced from initial material like tungsten-copper or molybdenum-copper with copper share of 15 - 70 mas % and sintered in hydrogen medium under temperature of 1200 C. Sintered billets are rolled by rolling mills with total deformation of 20 -80 % . In the case ratio of working rollers diameter (D) and thickness of initial sintered billet (H) is determined as D/H = 12.8 A-96, with A - coefficient, corresponding to copper percentage of the billet. EFFECT: decrease of anisotropy of linear thermal coefficient of material expansion. 1 tbl

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SU 1 615 996 A1

Authors

Ponomarev V.A.

Zavitnevich V.P.

Brinza V.N.

Shmelev L.S.

Dates

1995-02-20—Published

1989-02-17—Filed