METHOD FOR PRODUCING SPRAY POWDERS CONTAINING CHROMIUM NITRIDE Russian patent published in 2018 - IPC B22F1/00 C23C14/06 B22F3/10 B22F9/04 C22C32/00 C22C29/16 

Abstract RU 2666199 C2

FIELD: powder metallurgy.

SUBSTANCE: group of inventions relates to the production of a chromium nitride-containing powder for thermal spraying of coatings in the form of sintered agglomerates. Method includes the following steps: a) preparing powder mixture (A) comprising powder (B), comprising at least one component selected from a group consisting of chromium (Cr), CrN and Cr2N, and powder (C), comprising at least one component selected from a group comprising nickel, cobalt, nickel alloy, cobalt alloy and iron alloy, b) sintering powder mixture (A) at a nitrogen partial pressure above 1 bar to obtain sintered agglomerates, while maintaining constant content of chemically bound nitrogen or increasing the content of chemically bound nitrogen compared to powder mixture (A).

EFFECT: obtaining a durable powder.

19 cl, 5 tbl, 4 ex

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RU 2 666 199 C2

Authors

Gris, Benno

Bryuning, Bernkhard

Dates

2018-09-06Published

2014-01-23Filed