ELECTROLYTIC METHOD FOR OBTAINING COATINGS AND PRODUCTS FROM NIOBIUM DOPED WITH TANTALUM Russian patent published in 2022 - IPC C25D3/66 

FIELD: protection coatings.

SUBSTANCE: invention relates to high-temperature electroplating, namely, to the electrolytic production of corrosion- and heat-resistant metals, in particular niobium doped with tantalum, which can be used as coatings used to protect parts of various equipment in high-temperature and aggressive environments, as well as products made of this metal, such as, for example, parts of aircraft, shells of fuel elements, containers for liquid metals, parts of electrolytic capacitors and others. The proposed method involves electrolysis in a bromide melt containing KBr and CsBr with a constant concentration equal to 27 and 73 wt. %, respectively, and using an anode made of niobium and tantalum and a cathode made of conductive material. In this case, electrolysis is carried out at an anode current density of 0.02 A/cm², a cathode current density of 0.05-0.1 A/cm² in an argon atmosphere at a temperature of 750-800°C, with a content of 4-6 wt. %, niobium in the mentioned melt, tantalum 1-2 wt. %, in terms of metal, with the production of a coating or product on the cathode.

EFFECT: scope of application of the electrolysis of the bromide melt is expanded, coatings and products with high thermal and corrosion resistance are obtained.

1 cl, 5 ex