METHOD OF PRODUCING COMPOSITE MATERIAL BASED ON NICKEL AND GRAPHITE Russian patent published in 2020 - IPC B22F1/02 C23C4/67 C22C19/00 B22F9/16 

Abstract RU 2739924 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to powder metallurgy, particularly, to production of composite material based on non-metallic powder and metal-shell. It can be used as an abradable sealing coating on parts of aircraft engines, which is applied by means of gas-plasma sputtering. Powder of graphite is ground to submicron particle size. Obtained graphite powder is mixed with a binder, briquettes are produced from the mixture and subjected to heat treatment, crushing into powder and subsequent classification by particle size. Then graphite powder with specified particle size is heated to temperature of 140–170 °C and subjected to nickel plating with carbonyl method in inert gas medium. Composite material is obtained with flowability of 50–100 s, in chemical composition of which ratio of percentage content of nickel to content of graphite is 3.5–5.5.

EFFECT: obtaining material of uniform granulometric composition with given fluidity and high antifriction properties.

1 cl, 1 dwg, 1 ex

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Authors

Verten Mikhail Andreevich

Beketov Vladimir Nikolaevich

Pavlov Sergej Vladimirovich

Dates

2020-12-29Published

2020-02-18Filed