METHOD FOR PRODUCING ELECTROCONTACT COMPOSITE MATERIAL BASED ON COPPER CONTAINING CLUSTERS CONTAINING CLUSTERS BASED ON REFRACTORY METAL PARTICLES Russian patent published in 2018 - IPC B22F3/12 C22C9/00 B22F3/105 H01H1/25 B82Y30/00 

Abstract RU 2645855 C2

FIELD: manufacturing technology.

SUBSTANCE: invention relates to the production of an electrocontact composite material based on copper containing clusters based on refractory metal particles. Method includes machining a mixture of copper and refractory metal powders in an argon atmosphere at a mass ratio of balls and a mixture of powders of 20:1–40:1, speed of rotation of planetary disk of the planetary mill 694–900 rpm and processing time 5–90 minutes to obtain nanocomposite particles with a crystallite size of the refractory metal from 5 nm to 100 mcm, and subsequent spark plasma sintering of the activated mixture of powders in the chamber in a vacuum or in an inert gas atmosphere, passing 500–5000 A pulsed electric current through the sintered mixture under load up to 50 MPa, at a temperature of 700–1000 °C and a sintering time of 5–15 minutes.

EFFECT: structure of material is regulated.

1 cl, 5 dwg, 3 ex

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RU 2 645 855 C2

Authors

Kuskov Kirill Vasilevich

Moskovskikh Dmitrij Olegovich

Shkodich Natalya Fedorovna

Vadchenko Sergej Georgievich

Rogachev Aleksandr Sergeevich

Mukasyan Aleksandr Sergeevich

Dates

2018-02-28Published

2016-06-28Filed